# Off-Nadir Delta

> Real-time event and geospatial intelligence platform: it turns scattered signals — news, open data, and satellite imagery — into prioritized intelligence on what is happening, where to look, and what satellite data can show, usable for first response and situational awareness. There are three ways to look, distinguished by scope: the Watchfloor (everywhere, today — today's prioritized picture of global risk, so you know where to look now), the Map (one place, right now — verify an event from space with Sentinel-1 C-band SAR, NISAR L-band SAR, Sentinel-2 optical, VIIRS nighttime lights, and NASA FIRMS active fires, no GIS software required), and Delta Monitor (one place, over time — fix an area, pick what to count such as ships alongside a berth, burned area or water extent, and every new Sentinel-1 or Sentinel-2 acquisition over it is measured automatically). And two ways to be told: Delta Agent (an AI analyst that explains what happened and why it matters, and recommends which satellite sensor and area to image next), and Daily Reports (a written daily assessment with Key Judgments, calibrated confidence, and an outlook). The same intelligence is also available programmatically: a developer REST API and an MCP server expose the signals, the daily brief, satellite scene search, and AI analysis to your own stack or AI agent (bearer-key auth, token-metered). Built for OSINT, geopolitical-risk, and satellite-intelligence analysts, and for developers integrating live signals and briefs through the API and MCP. Also applicable to emergency management, media, enterprise-risk, and research workflows. Free to browse; no GIS software installation required.

**Canonical URL:** https://offnadir-delta.com (non-www)
**Full Documentation:** https://offnadir-delta.com/llms-full.txt

---

## 1. What is Off-Nadir Delta?

Off-Nadir Delta is a real-time event and geospatial intelligence platform. Disasters, conflict, environmental change, and infrastructure failures unfold worldwide every day, but the signals are scattered across news, open data, and satellite imagery — and reading them takes expertise and time. Off-Nadir Delta combines an AI analyst, maps, satellite data, and open sources to explore, visualize, and prioritize geographic events, turning them into intelligence for first response and situational awareness — built around five product surfaces, grouped by what you are trying to do. **Watchfloor:** a daily global situational-awareness dashboard — track geolocated geopolitical and security events (Delta Signals, distilled from global news media), AI-enriched and ranked by severity, see newly arrived signals badged in the feed, and scrub a timeline of activity. Delta Signals is evidence-based: every signal links back to its original sources and an AI-corrected, source-linked location. Where raw open-source feeds often place an event only at country or regional level — or where it was reported from rather than where it happened — Delta resolves it to precise coordinates and checks the location against the source text before mapping it, so you can open, check, and share the evidence behind it. Publicly browsable without an account. **Delta Agent:** an AI intelligence analyst you chat with in plain language — it reasons over live events with real GEOINT/OSINT tradecraft and returns a sourced, geolocated brief that recommends which sensor (SAR or optical) and area to image next; it reads satellite imagery, remembers the conversation, and shows its sources (login required; metered by tokens). **Map:** a no-code satellite-imagery workbench for looking at ONE PLACE RIGHT NOW — stack Sentinel-1 SAR, NISAR L-band SAR, Sentinel-2 optical, VIIRS nighttime lights, and your own data, then run change detection and SAR vessel detection. **Delta Monitor:** the same one place OVER TIME — fix an area, pick what to count (ships alongside a berth, burned area, water extent, vegetation, nighttime lights), and every new Sentinel-1 or Sentinel-2 acquisition over it is measured automatically, building a time series you return to. Unusual readings are flagged against the area's own recent history using a median-absolute-deviation (MAD) modified z-score (threshold 3.5 over the last 30 measurements, minimum 5) rather than a mean±standard-deviation band, so a single outlier does not move the bar it is judged against. Free plans can watch one place. **Daily Reports:** a written daily intelligence report on world events, produced to professional analytic standards — Key Judgments with calibrated confidence, an outlook, and collection priorities, with an analytic-quality score, a single-country focus (paid plans), and PDF export; read any day from a calendar archive. **Developer API & MCP:** the same intelligence is available programmatically — a REST API and an MCP server expose the signals, the daily world brief, satellite scene search, hotspots, and AI analysis (assess and analyst) for your own dashboards, pipelines, or AI agents, with bearer-key auth, token metering, and cursor pagination; the MCP server works with Claude Code, Claude Desktop, Cursor, VS Code, or any MCP client. Deeper Watchfloor capabilities (scrubbing further back through history, and AI remote-sensing deep-dives) are available on paid plans or metered by tokens. No software installation required.

**Built For:** Primarily OSINT, geopolitical-risk, and satellite-intelligence analysts, and developers integrating live signals and briefs through the API and MCP. It also supports workflows such as — no intelligence background required — emergency management and government; journalism and media; risk, supply-chain, and insurance analysis; enterprise asset and supply-chain exposure; environmental research; disaster response; agriculture and agronomy; urban planning; education; and independent analysis.

- [Delta Watchfloor](https://offnadir-delta.com/watchfloor): Daily global situational-awareness dashboard (public, free to browse)
- [Delta Agent](https://offnadir-delta.com/agent): Chat with an AI intelligence analyst — sourced, geolocated briefs grounded in real tradecraft, with sensor and area-of-interest tasking recommendations (login required; metered by tokens)
- [Delta Map](https://offnadir-delta.com/map): One place, right now — browser-based satellite-imagery workbench with Sentinel-1 SAR, NISAR L-band SAR, Sentinel-2 optical, VIIRS, change detection and SAR vessel detection (no GIS software)
- [Delta Monitor](https://offnadir-delta.com/monitoring): One place, over time — put an area under continuous satellite watch and track a number across acquisitions (ships alongside a berth, burned area, water extent), measured automatically on every new pass, with anomalies flagged against the area's own history. Readable and configurable over the API and MCP too.
- [Situational Awareness Dashboard](https://offnadir-delta.com/situational-awareness-dashboard): What Delta Watchfloor is and how to track global events with it
- [Global Situation Brief](https://offnadir-delta.com/brief): Daily AI-synthesized OSINT/GEOINT brief of worldwide event signals — headline, executive summary, top developments with why-it-matters and what-to-watch, per-theme roll-up, and ranked signals. Permanent, citeable per-day archive pages at /brief/YYYY-MM-DD (public, updated daily; RSS at /brief/feed.xml)
- [Country Situation Pages](https://offnadir-delta.com/situation/ukraine): Per-country situation monitors at /situation/<country> — geolocated event signals, activity trend and imagery context for 34 countries (e.g. ukraine, russia, united-states, china, japan). Thin pages are marked noindex until they have enough signal
- [Delta Reports](https://offnadir-delta.com/reports): In-app daily intelligence report viewer — pick any day on a calendar to read that day's report with AI key judgments, an interactive world signal map, satellite-tasking recommendations, country focus, and PDF export. Archive depth scales with plan; the public citeable narrative lives at /brief.
- [Event Intelligence API](https://offnadir-delta.com/event-intelligence-api): Build with it — the same signals, imagery search, monitoring and analyst briefs over a REST API and an MCP server, so your own code or AI agent can call them directly (bearer-key auth, token-metered; Python SDK available)
- [What Is a Daily Intelligence Report?](https://offnadir-delta.com/daily-intelligence-report): Explainer — what a daily intelligence report is, what goes into it (Key Judgments, calibrated confidence, outlook, collection priorities, analytic-quality score), and how Off-Nadir Delta produces one daily to professional analytic standards (ICD-203-style tradecraft)
- [About](https://offnadir-delta.com/about): Platform overview and mission
- [About (Markdown)](https://offnadir-delta.com/about.md): Plain text version

---

## 2. Pricing & Constraints

**Pricing Model:** Credits are deducted by operation. Tile requests, imagery searches, assessments, monitoring runs, and Analyst questions have different costs. Estimated and maximum costs are shown before execution.

| Plan | Status | Best For |
|------|--------|----------|
| Free | Available | Browse the Watchfloor & Delta Agent; Sentinel-2 optical; one monitored area; personal use |
| Starter | Available | Sentinel-1 SAR, VIIRS, change detection, more monitored areas; Watchfloor history + "what changed" |
| Pro | Available | Commercial-use license; unlimited monitoring, full history depth, Delta Agent deep-dives |
| Team / Team Plus | Rolling out | Teams: one shared monthly token pool for the whole org on a single bill (no per-seat wallets); members inherit the plan. Manage from Account → Organization |

**Pricing and token allocations may change. The Pricing page is the source of truth for current details:**
https://offnadir-delta.com/pricing

**Key Constraints:**
- Typical browsing session: ~20-50 tokens (approx., varies by zoom/area)
- Tokens reset monthly (no rollover)
- Commercial use requires the Pro plan or a Team plan
- Data attribution required (see Data Sources below)

**Learn More:**
- [Pricing](https://offnadir-delta.com/pricing): Plans and feature comparison
- [Token Guide](https://offnadir-delta.com/token-guide): How tokens work, optimization tips

---

## 3. Data Sources & Attribution

- [Data Sources](https://offnadir-delta.com/data-sources): Full reference for every data source — resolution, revisit, bands, and attribution

**Sentinel-1 SAR (Radar)**
- Source: Copernicus Sentinel-1, European Space Agency (ESA)
- Access: Microsoft Planetary Computer STAC API
- License: Copernicus Open Access (free with attribution)
- Citation: "Contains modified Copernicus Sentinel data [YEAR]"

**Sentinel-2 Optical (Multispectral)**
- Source: Copernicus Sentinel-2, European Space Agency (ESA)
- Access: AWS Earth Search STAC API (Element 84)
- License: Copernicus Open Access (free with attribution)
- Citation: "Contains modified Copernicus Sentinel data [YEAR]"

**NISAR L-band SAR (Radar)**
- Source: NISAR, a joint NASA / ISRO mission
- Access: NASA CMR STAC (Alaska Satellite Facility DAAC), collection NISAR_L2_GCOV_PROVISIONAL_V1
- Product: L2 GCOV (geocoded covariance), HH and HV polarizations, 10 m frequency-A grid
- Calibration: PROVISIONAL — backscatter values are indicative, not measured
- Availability: paid plans (Starter and above)
- License: NASA Open Data Policy (free for all uses)
- Citation: "Contains NASA/ISRO NISAR data processed by ASF DAAC"

**VIIRS Nighttime Lights**
- Source: NASA Black Marble (VNP46A2)
- Access: NASA CMR API
- License: NASA Open Data Policy (free for all uses)
- Citation: "NASA Black Marble VNP46A2"

**NASA FIRMS Active Fire**
- Source: NASA FIRMS (Fire Information for Resource Management System)
- Access: NASA GIBS WMS (no API key required)
- Sensors: VIIRS (S-NPP, NOAA-20, NOAA-21) at 375m; MODIS (Terra, Aqua) at 1km
- License: NASA Open Data Policy (free for all uses)
- Update frequency: Daily (VIIRS ~12h latency, MODIS ~1-2 day latency)

**Data Specifications:**
| Satellite | Type | Resolution | Revisit | Archive |
|-----------|------|------------|---------|---------|
| Sentinel-1 | SAR (Radar) | 10-20m | 6 days | 2014-present |
| Sentinel-2 | Optical | 10m | 5 days | 2015-present |
| NISAR | SAR (Radar, L-band) | 10m | 12-day repeat (~6-day avg revisit) | 2026-present |
| VIIRS | Nighttime Lights | ~500m | Daily | 2012-present |
| VIIRS/MODIS | Active Fire (FIRMS) | 375m/1km | Daily | 2000-present |

---

## 4. Key Features

- [Sentinel-1 SAR Viewer](https://offnadir-delta.com/sentinel-1-sar-viewer): Radar imagery, cloud-penetrating, flood mapping
- [NISAR L-Band Viewer](https://offnadir-delta.com/nisar-l-band-viewer): View NASA-ISRO NISAR L-band radar (HH/HV, 10 m, provisional calibration) — sees flooding and structure beneath vegetation canopy that C-band cannot reach
- [Sentinel-2 Viewer](https://offnadir-delta.com/sentinel-2-viewer): 10m optical imagery, vegetation analysis
- [NDVI Online](https://offnadir-delta.com/ndvi-online): Live global NDVI browse map on-page (VIIRS 8-day, MODIS archive since 2000; no login) + 10m Sentinel-2 NDVI in the workspace
- [Change Detection](https://offnadir-delta.com/change-detection): Multi-temporal comparison and difference analysis
- [Nighttime Lights](https://offnadir-delta.com/nighttime-lights-map): VIIRS Black Marble, urban analysis
- [Flood Mapping](https://offnadir-delta.com/flood-mapping-sar): SAR-based disaster response
- [Ship Monitoring](https://offnadir-delta.com/ship-monitoring): Maritime vessel detection
- [Ship Detection Algorithms](https://offnadir-delta.com/ship-detection-algorithms): Why two SAR ship detections of the same water disagree — the land mask (coastline source and shoreline buffer), not the detector, is usually what changes a coastal vessel count. Includes a measured Natural Earth 10m vs OpenStreetMap coastline comparison over Tokyo Bay (121 m mean displacement, 2026-08-06) and the buffer trade-off table. Every run records algorithm version, release, parameter profile and a configuration hash, so counts can be checked for comparability
- [Free GeoTIFF Viewer](https://offnadir-delta.com/geotiff-upload): View GeoTIFF files instantly in the browser — 100% client-side, file never uploaded, no login
- [Reference Layers](https://offnadir-delta.com/reference-layers): Basemaps and overlays
- [Live Active Fire Map](https://offnadir-delta.com/active-fire-map): Interactive NASA FIRMS fire map directly on the page — no login, no API key, dates back to 2000
- [Delta Monitor](https://offnadir-delta.com/monitoring): Time-series monitoring of any area, measured on every new satellite pass, with automatic anomaly detection
- [Satellite Area Monitoring (Guide)](https://offnadir-delta.com/satellite-area-monitoring): What area monitoring is and how to monitor any area with satellite time series, no GIS or code
- [No-Code Google Earth Engine Alternative](https://offnadir-delta.com/google-earth-engine-alternative): Monitor areas with satellite imagery in the browser without writing code
- [Monitor an Area Without QGIS](https://offnadir-delta.com/monitor-area-without-qgis): No-install, browser-based alternative to desktop GIS for area monitoring
- [Delta Monitor (Markdown)](https://offnadir-delta.com/monitoring.md): Full feature reference with supported indices, workflow, and FAQ

---

## 5. Getting Started

- [Getting Started Guide](https://offnadir-delta.com/guide): Step-by-step tutorial
- [Guide (Markdown)](https://offnadir-delta.com/guide.md): Plain text version

### For developers & AI agents (API + MCP)

Off-Nadir Delta exposes the same intelligence programmatically over a REST API and an MCP (Model Context Protocol) server. All endpoints live under `/api/v1`, authenticate with a bearer API key (`Authorization: Bearer ond_...`), and are metered on your token balance. REST endpoints: `GET /api/v1/signals` (geolocated world event signals, cursor-paginated; filter by bbox/date/categories/markets/min_severity/escalating and sort by severity/recency/sources/geoint (GEOINT collection priority)), `GET /api/v1/signals/{id}` (fetch one signal by its id), `GET /api/v1/signals/stats` (aggregate counts by category and day — trend roll-ups), `GET /api/v1/signals/hotspots` (grid-binned geographic hotspots ranked by event count), `GET /api/v1/collection/plan` (the deterministic SAR+optical imagery plan for one event — each collection searched exactly once against the event footprint), `GET /api/v1/collection/priority` (where observation is most worthwhile and what class of satellite it needs — separates targets a free Sentinel pass answers from those needing commercial sub-metre tasking), `GET /api/v1/collection/observability` (exhaustive survey of which events a given sensor can actually resolve), `GET /api/v1/passes` (next satellite passes over a target — free systematic Sentinel/Landsat acquisitions separated from taskable commercial access windows for WorldView/ICEYE/Capella/SkySat, with off-nadir angle, sunlit flag and orbital-element age), `GET /api/v1/imagery` (satellite imagery catalog search — Sentinel-1/2 scenes over an area, the natural follow-up to a signal), `GET /api/v1/brief` (the AI-synthesized Daily World Brief — free), `GET /api/v1/elevation` (terrain height at a point or over an area — free; POST for a polygon), `GET /api/v1/terrain` (analysis derived from the terrain — free: SAR layover/shadow fractions over an area for a given incidence and look direction, and the ground profile plus a line-of-sight verdict between two points), `POST /api/v1/index-series` (spectral-index time series over an area, measured scene by scene back through the Sentinel-2 archive — how NDVI/NBR/NDWI and the rest moved since a given year; metered per scene actually measured, and `estimate_only` returns the scene count, real date span and cost for free first), `POST /api/v1/ships` (count vessel-like targets in one Sentinel-1 scene over an area using CFAR detection — radar sees through cloud and at night; the response carries the caveats that change what the count means, such as an unavailable land mask or a scene covering only part of the area), `POST /api/v1/signals/{id}/refine-location` (research one signal's location further and store the better coordinate — most signals are geolocated once from a single article's place string, so about two thirds sit at ±5 km or have no bounded radius at all; charged only if the precision actually improves, and free if an earlier caller already refined it), `GET /api/v1/usage` (remaining token balance and plan capabilities — free), `GET /api/v1/status` (data freshness & pipeline status — free), `GET /api/v1/version` (server version and contract fingerprints — free, no API key needed), `POST /api/v1/assess` (AI remote-sensing assessment of one event; signals with no satellite-observable physical mark are rejected before any charge), `POST /api/v1/analyst` (agentic OSINT/GEOINT analyst brief with citations; durable async — the run is enqueued and returns 202 with a job_id immediately, executed by a background worker and charged once on completion), `GET /api/v1/analyst/{jobId}` (poll an async analyst run — free), `GET /api/v1/standing-orders` + `POST /api/v1/standing-orders` (put an area under continuous watch — free to create; a check that finds nothing new invokes no model and costs nothing, only a firing check runs the Analyst and is metered), `DELETE /api/v1/standing-orders/{orderId}` (stop watching — free), `GET /api/v1/monitoring` + `POST /api/v1/monitoring` (Delta Monitor — fix a place and a quantity, and every new Sentinel-1/2 or VIIRS acquisition over it is measured automatically; free to create and to read, metered only per scene actually measured), `GET /api/v1/monitoring/{areaId}` (the full measurement time series for one area, every point traceable to its STAC item — free), `GET /api/v1/claims` (the claim ledger — every assertion the Analyst made on your key with its evidence class, independent source count and publishers, plus the link to any later answer that restated it and whether the evidence got stronger or weaker — free). The MCP server (Streamable HTTP at `/api/v1/mcp`) exposes tools `query_signals` / `query_stats` / `query_hotspots` / `search_imagery` / `predict_satellite_passes` / `plan_event_imagery` / `rank_imaging_priority` / `survey_observable_events` / `get_world_brief` / `get_usage` / `assess_signal` / `ask_analyst` / `get_analyst_job` / `query_claims` / `create_standing_order` / `list_standing_orders` / `delete_standing_order` / `list_monitored_areas` / `get_monitored_area` / `create_monitored_area` / `lookup_elevation` / `analyze_terrain` / `measure_index_series` / `detect_ships` / `refine_location`, resources `brief://latest` / `brief://{date}` / `signals://schema` / `usage://current` / `imagery://collections` / `status://current`, and prompts `daily-situation-briefing` / `assess-top-signal` / `aoi-watch` / `market-exposure-check`. Machine-readable OpenAPI 3.1 at `/api/v1/openapi.json`. Available on every plan including Free — metering is against your token balance (`get_world_brief` and `get_usage` are free). Two surfaces additionally carry a per-plan count limit: how many standing orders you may have running (Free: none) and how many monitored areas you may keep (Free: one). For teams, a Team plan gives the whole organization one shared token pool: every member's API and MCP usage draws from the same wallet on a single bill (managed at Account → Organization).

API metering in Delta tokens (map tiles are metered separately, by pixels, bands and processing type — see /token-guide): signals search 3, signal by id 1, stats 1, hotspots 1, imagery search 2, collection plan 4, imaging priority 1, observability survey 1, satellite passes 2 per call; AI tools are assess_signal 5 (quick) / 15 (deep) and ask_analyst usage-based from 5 up to a promised ceiling (123 fast / 415 deep), charged once on completion — an empty or unusable result is not charged. Brief, usage, status, version, claims, standing-order management and job polling are free. The authoritative machine-readable price list is `_meta.pricing_contract`, attached to every MCP response; current values are always at https://offnadir-delta.com/docs/api.

- [Event Intelligence API & MCP Server](https://offnadir-delta.com/event-intelligence-api): Overview of the REST API and MCP server — what you can pull, use cases, auth, and metering
- [MCP Server](https://offnadir-delta.com/mcp): Model Context Protocol server for AI agents — tools, resources, prompts, and one-command setup for Claude Code and any MCP client
- [Developer Documentation](https://offnadir-delta.com/docs): Docs hub — start here to reach the Quickstart, API reference, MCP server docs, SDKs, and OpenAPI spec
- [Quickstart](https://offnadir-delta.com/docs/quickstart): Make your first authenticated call in under five minutes — curl, Python SDK, and MCP client
- [API & MCP Documentation](https://offnadir-delta.com/docs/api): Full developer reference — endpoints, parameters, example requests/responses, rate limits, pagination, errors, and MCP config
- [MCP Server Documentation](https://offnadir-delta.com/docs/mcp): Technical MCP reference — endpoint, OAuth 2.1 / API-key auth, copy-paste setup for Claude Code / Claude Desktop / Cursor / VS Code, and the full tools/resources/prompts list
- [SDKs (Python)](https://offnadir-delta.com/docs/sdks): Official open-source Python SDK (Apache-2.0) — typed models, sync and async clients, auto-pagination, and a built-in MCP client

**Quick Start:**
1. Sign up free at https://offnadir-delta.com/auth/signup
2. Navigate to your area of interest
3. Select satellite data source (Sentinel-1/2, NISAR, VIIRS)
4. Search by date range
5. Add imagery to map
6. Analyze and export

---

## 6. Glossary & Technical Terms

- [Glossary](https://offnadir-delta.com/glossary): Full terminology reference

**Key Terms:**
- **SAR**: Synthetic Aperture Radar - works through clouds, day/night
- **NDVI**: Vegetation health index (-1 to +1)
- **GRD**: Ground Range Detected SAR product
- **RTC**: Radiometrically Terrain Corrected SAR
- **COG**: Cloud Optimized GeoTIFF
- **STAC**: SpatioTemporal Asset Catalog API standard

---

## 7. FAQ

- [FAQ](https://offnadir-delta.com/faq): Detailed answers on satellite data, tokens, plans, and platform usage
- [FAQ (Markdown)](https://offnadir-delta.com/faq.md): Plain text version
- [Active Fire Map (Markdown)](https://offnadir-delta.com/active-fire-map.md): FIRMS sensor specs and usage guide

**Common Questions:**
- **Is it free?** Yes, free tier available. Paid plans add more tokens; the Pro and Team plans add commercial use.
- **Do I need GIS experience?** No, designed for beginners.
- **What browsers work?** Chrome, Firefox, Edge, Safari (Chrome/Firefox recommended).
- **Can I upload my data?** Yes, GeoTIFF and GeoJSON supported.
- **Does fire data need an API key?** No. NASA FIRMS is displayed via GIBS WMS, free and keyless.
- **Does fire data use tokens?** No. FIRMS overlay is free, no token cost.
- **Where can I view NASA FIRMS fires online for free?** The live map at https://offnadir-delta.com/active-fire-map — no login or API key required.
- **Is there a free online GeoTIFF viewer?** Yes: https://offnadir-delta.com/geotiff-upload parses .tif files entirely in the browser; nothing is uploaded to a server.

---

## 8. Use Cases

- [Use Cases](https://offnadir-delta.com/use-cases): Nine real-world applications — geopolitical & supply-chain risk, maritime domain awareness, disaster response, environmental & crop monitoring, urban planning, nighttime lights, research/education, and API/MCP access for developers and AI agents
- [Best OSINT Satellite Imagery Tools](https://offnadir-delta.com/best-osint-satellite-imagery-tools): Ranked, honest comparison of the main OSINT satellite imagery tools (Copernicus Browser, Sentinel Hub/EO Browser, NASA Worldview, USGS EarthExplorer, Google Earth Pro, Planet, Vantor/Maxar, SkyFi, Bellingcat toolkit, GDELT/ACLED/LiveUAMap) and where Off-Nadir Delta fits
- [Satellite Intelligence for OSINT](https://offnadir-delta.com/osint-satellite-intelligence): How to do geospatial OSINT with satellite imagery — the signal → collect → interpret workflow (Watchfloor, Delta Agent, Map) for journalists, researchers, and analysts, on open data
- [Geospatial Intelligence (GEOINT)](https://offnadir-delta.com/geospatial-intelligence): What GEOINT is and how it differs from OSINT and remote sensing — open-source geospatial intelligence in the browser, from geolocated event to Sentinel SAR/optical confirmation
- [AI Satellite Imagery Analysis](https://offnadir-delta.com/ai-satellite-analysis): How AI analyzes satellite imagery — Delta Agent as a reasoning intelligence analyst plus pixel-level change detection and SAR vessel detection, on open Sentinel data
- [Geopolitical & Event Intelligence](https://offnadir-delta.com/geopolitical-intelligence): Track geolocated world events, understand why they matter with an AI analyst, and confirm them with satellite imagery — for risk, security, supply-chain, insurance, and research teams
- [Defense Satellite Intelligence](https://offnadir-delta.com/defense-satellite-intelligence): Open-source, unclassified GEOINT/OSINT for the defense and security community — situational awareness and verification, not targeting
- [Maritime Domain Awareness](https://offnadir-delta.com/maritime-domain-awareness): Detect vessels (including dark vessels) in Sentinel-1 SAR regardless of AIS, monitor chokepoints, and tie maritime event signals to imagery
- [Liveuamap Alternative](https://offnadir-delta.com/liveuamap-alternative): A live global events map that adds analyzable Sentinel SAR/optical imagery, an AI analyst, and your own monitored areas
- [EO Browser Alternative](https://offnadir-delta.com/eo-browser-alternative): A no-code browser alternative for viewing and comparing Sentinel-1/2, NISAR, and VIIRS imagery, and for monitoring an area over time
- [Zoom Earth Alternative](https://offnadir-delta.com/zoom-earth-alternative): Beyond live weather imagery — analyzable Sentinel SAR/optical scenes, change detection, and geolocated event context
- [GDELT Visualization Tool](https://offnadir-delta.com/gdelt-visualization-tool): See GDELT world-event data on a map, AI-enriched and geolocated, with satellite imagery over the same place
- [SAR vs Optical](https://offnadir-delta.com/sar-vs-optical): Comparison guide
- [Satellite Area Monitoring (Guide)](https://offnadir-delta.com/satellite-area-monitoring): What area monitoring is and how to do it with satellite time series — the explainer behind Delta Monitor

**Applications:**
- Environmental Monitoring: Deforestation, wetlands, vegetation health, long-term NDVI trends
- Disaster Response: Flood mapping, active fire monitoring, wildfire damage, earthquake assessment, post-disaster recovery tracking
- Agriculture: Crop health, irrigation, harvest tracking, seasonal phenology monitoring
- Urban Planning: Sprawl analysis, construction monitoring, built-up index time series
- Maritime: Vessel detection, port activity, continuous ship detection monitoring

**Area Monitoring Feature:**
- Draw or upload a polygon (up to 5,000 km²)
- Select one or more indices to track (NDVI, SAR backscatter, NDWI, DNB, Ship Detection, etc.)
- Set analysis start date; Off-Nadir Delta automatically collects all available scenes
- Results displayed as an interactive time series graph with anomaly detection highlighted
- Click any data point to add that satellite scene to the map
- Change analysis period and re-analyze at any time

---

## 9. Blog

- [Blog](https://offnadir-delta.com/blog): Tutorials, case studies, and technical insights
- [RSS Feed](https://offnadir-delta.com/feed.xml): Subscribe for updates

**All Articles:**
- [Build a Daily Situation-Briefing Agent with MCP Prompts and Area Watch](https://offnadir-delta.com/blog/daily-situation-briefing-agent-mcp)
- [From a World Event to the Satellite Scenes Over It: One API & MCP Workflow](https://offnadir-delta.com/blog/event-to-satellite-imagery-api-mcp-workflow)
- [From News Feed to Intelligence Report: What Key Judgments and Confidence Add](https://offnadir-delta.com/blog/news-feed-to-intelligence-report)
- [How to Give an AI Agent Live World-Event Awareness (MCP + REST API)](https://offnadir-delta.com/blog/ai-agent-world-event-awareness-mcp)
- [How to Connect an Event-Intelligence MCP Server to Claude, ChatGPT, Cursor, and the Command Line](https://offnadir-delta.com/blog/connect-mcp-server-claude-chatgpt-cursor)
- [What Is Off-Nadir Satellite Imagery? Viewing Angle Explained](https://offnadir-delta.com/blog/what-is-off-nadir-satellite-imagery)
- [Unsupervised Anomaly Detection in Satellite Time Series: When AI Learns 'Normal'](https://offnadir-delta.com/blog/unsupervised-anomaly-detection-satellite-time-series)
- [Can AI Read a Satellite Image? The Reasoning Layer Above Pixel Models](https://offnadir-delta.com/blog/ai-reasoning-layer-satellite-imagery)
- [Port Congestion and Supply-Chain Risk: What Satellites See That Shipping Data Misses](https://offnadir-delta.com/blog/port-congestion-supply-chain-risk-satellite)
- [Watching Mines, Tailings Dams, and Industrial Sites from Space: Environmental and Operational Risk](https://offnadir-delta.com/blog/industrial-site-monitoring-environmental-risk-satellite)
- [What Is Geospatial OSINT? Turning Open Sources Into a Picture of the Ground](https://offnadir-delta.com/blog/what-is-geospatial-osint)
- [Why This Sensor? How the Delta Agent Explains Its Imagery-Tasking Choices](https://offnadir-delta.com/blog/delta-agent-sensor-tasking-tradecraft)
- [A Field Guide to Free Satellite Data Sources: Sentinel-1, Sentinel-2, VIIRS, and NASA FIRMS](https://offnadir-delta.com/blog/free-satellite-data-sources-explained)
- [What Is a Situational Awareness Dashboard? Fusing Global Events With Satellite Imagery](https://offnadir-delta.com/blog/situational-awareness-dashboard-satellite-intelligence)
- [Getting Started with Sentinel-1 SAR Imagery](https://offnadir-delta.com/blog/getting-started-sentinel-1-sar)
- [Four Types of Satellite Image Resolution](https://offnadir-delta.com/blog/satellite-image-resolution-four-types)
- [Five Mistakes Satellite Imagery Beginners Make](https://offnadir-delta.com/blog/five-mistakes-satellite-imagery-beginners)
- [Why SAR Can See Through Clouds](https://offnadir-delta.com/blog/why-sar-sees-through-clouds)
- [Understanding NDVI: Vegetation Health from Space](https://offnadir-delta.com/blog/understanding-ndvi-vegetation-health)
- [Flood Mapping with SAR: A Practical Workflow](https://offnadir-delta.com/blog/flood-mapping-with-sar-practical-workflow)
- [How to Read a SAR Image: Bright and Dark Explained](https://offnadir-delta.com/blog/reading-sar-images-practical-guide)
- [Free vs. Commercial Satellite Imagery](https://offnadir-delta.com/blog/free-vs-commercial-satellite-imagery)
- [Beyond True Color: Sentinel-2 Band Combinations](https://offnadir-delta.com/blog/sentinel-2-band-combinations)
- [What Nighttime Lights Tell Us About Cities](https://offnadir-delta.com/blog/nighttime-lights-urban-analysis)
- [Browser-Based WebGIS vs. Desktop GIS](https://offnadir-delta.com/blog/browser-webgis-vs-desktop-gis)
- [Change Detection: Three Approaches That Work](https://offnadir-delta.com/blog/satellite-change-detection-techniques)
- [How to Choose the Right Satellite Data](https://offnadir-delta.com/blog/choosing-satellite-data-decision-guide)
- [SAR Polarization: VV, VH Demystified](https://offnadir-delta.com/blog/sar-polarization-vv-vh-explained)
- [GeoTIFF and Cloud-Optimized GeoTIFF Explained](https://offnadir-delta.com/blog/geotiff-cloud-optimized-explained)
- [SAR vs Optical: A Practical Guide to Choosing the Right Sensor](https://offnadir-delta.com/blog/sar-vs-optical-when-to-use-which)
- [EVI vs NDVI: When NDVI Isn't Enough](https://offnadir-delta.com/blog/evi-vs-ndvi-vegetation-indices)
- [MNDWI and NDWI Explained: Mapping Water Bodies from Space](https://offnadir-delta.com/blog/water-body-detection-ndwi-mndwi)
- [How to Upload and Analyze Your Own GeoTIFF](https://offnadir-delta.com/blog/upload-analyze-geotiff-guide)
- [Satellite Image Difference Analysis: Step-by-Step](https://offnadir-delta.com/blog/difference-analysis-step-by-step)
- [Multi-Temporal SAR Color Composites](https://offnadir-delta.com/blog/multi-temporal-sar-color-composite)
- [Snow and Ice Monitoring with NDSI](https://offnadir-delta.com/blog/snow-ice-monitoring-ndsi)
- [Choosing the Right Colormap for Satellite Data](https://offnadir-delta.com/blog/understanding-satellite-data-colormaps)
- [Geological Mapping: Iron Oxide and Clay Detection](https://offnadir-delta.com/blog/iron-oxide-clay-geological-mapping)
- [Sentinel-1 GRD vs RTC: Which SAR Product to Use](https://offnadir-delta.com/blog/sentinel-1-grd-vs-rtc-comparison)
- [Reference Layers: Adding Context to Satellite Data](https://offnadir-delta.com/blog/reference-layers-context-satellite-data)
- [Active Fire Monitoring with NASA FIRMS](https://offnadir-delta.com/blog/nasa-firms-active-fire-monitoring)
- [What Is Remote Sensing? A Complete Guide](https://offnadir-delta.com/blog/what-is-remote-sensing-complete-guide)
- [How Satellites Capture Images of Earth](https://offnadir-delta.com/blog/how-satellites-capture-images)
- [The Electromagnetic Spectrum in Remote Sensing](https://offnadir-delta.com/blog/electromagnetic-spectrum-remote-sensing)
- [Satellite Orbit Types and Their Impact on Earth Observation](https://offnadir-delta.com/blog/satellite-orbit-types-explained)
- [Radiometric Calibration: From Raw Numbers to Physical Measurements](https://offnadir-delta.com/blog/radiometric-calibration-basics)
- [Supervised vs. Unsupervised Classification of Satellite Imagery](https://offnadir-delta.com/blog/supervised-vs-unsupervised-classification)
- [Atmospheric Correction: Why Raw Satellite Data Lies](https://offnadir-delta.com/blog/atmospheric-correction-why-it-matters)
- [The Complete Guide to Sentinel-2](https://offnadir-delta.com/blog/sentinel-2-complete-guide)
- [Sentinel-2 Cloud Masking Techniques That Actually Work](https://offnadir-delta.com/blog/sentinel-2-cloud-masking-techniques)
- [Sentinel-2 for Water Quality Monitoring](https://offnadir-delta.com/blog/sentinel-2-water-quality-monitoring)
- [False Color Composites: Seeing What Eyes Cannot](https://offnadir-delta.com/blog/false-color-composites-interpretation)
- [Chlorophyll Mapping with Sentinel-2 Red-Edge Bands](https://offnadir-delta.com/blog/chlorophyll-red-edge-sentinel2)
- [SAVI and Soil-Adjusted Vegetation Indices](https://offnadir-delta.com/blog/soil-adjusted-vegetation-index-savi)
- [Land Surface Temperature from Thermal Satellite Sensing](https://offnadir-delta.com/blog/land-surface-temperature-thermal-sensing)
- [SAR Backscatter Coefficient: Understanding Sigma Naught](https://offnadir-delta.com/blog/sar-backscatter-coefficient-guide)
- [SAR Speckle Noise: What It Is and How to Filter It](https://offnadir-delta.com/blog/sar-speckle-noise-filtering)
- [SAR Interferometry (InSAR): Measuring Ground Movement from Space](https://offnadir-delta.com/blog/sar-interferometry-insar-explained)
- [Coherence-Based Change Detection with SAR](https://offnadir-delta.com/blog/coherence-change-detection-sar)
- [Ascending vs. Descending Orbits in SAR](https://offnadir-delta.com/blog/ascending-descending-orbit-sar)
- [SAR for Soil Moisture Estimation](https://offnadir-delta.com/blog/sar-soil-moisture-estimation)
- [Precision Agriculture with Satellite Data](https://offnadir-delta.com/blog/precision-agriculture-satellite-guide)
- [Crop Type Mapping with Satellite Time Series](https://offnadir-delta.com/blog/crop-type-mapping-satellite-imagery)
- [Crop Yield Estimation from Remote Sensing](https://offnadir-delta.com/blog/crop-yield-estimation-remote-sensing)
- [Irrigation Monitoring and Water Use from Space](https://offnadir-delta.com/blog/irrigation-monitoring-from-space)
- [Early Detection of Crop Stress with Satellite Data](https://offnadir-delta.com/blog/crop-stress-early-detection-satellite)
- [Mapping Soil Properties from Satellite Imagery](https://offnadir-delta.com/blog/soil-properties-mapping-satellite)
- [Deforestation Monitoring with Satellite Data](https://offnadir-delta.com/blog/deforestation-monitoring-satellite-data)
- [Glacier Retreat Monitoring with Satellite Time Series](https://offnadir-delta.com/blog/glacier-retreat-satellite-monitoring)
- [Coral Reef Monitoring from Space](https://offnadir-delta.com/blog/coral-reef-monitoring-from-space)
- [Drought Monitoring with Satellite Indices](https://offnadir-delta.com/blog/drought-monitoring-satellite-indices)
- [Mangrove Mapping with Satellite Imagery](https://offnadir-delta.com/blog/mangrove-mapping-satellite-imagery)
- [Ocean Color Remote Sensing: What Satellites See in the Sea](https://offnadir-delta.com/blog/ocean-color-satellite-monitoring)
- [Methane Emission Detection from Satellites](https://offnadir-delta.com/blog/methane-emission-detection-satellites)
- [Air Quality Monitoring: Satellite NO₂ and PM2.5](https://offnadir-delta.com/blog/air-quality-satellite-no2-pm25)
- [Land Cover Change Detection Methods](https://offnadir-delta.com/blog/land-cover-change-detection-methods)
- [Earthquake Damage Assessment with Satellite Data](https://offnadir-delta.com/blog/earthquake-damage-assessment-satellite)
- [Hurricane and Typhoon Tracking from Satellites](https://offnadir-delta.com/blog/hurricane-typhoon-satellite-tracking)
- [Landslide Detection with SAR and Optical Satellites](https://offnadir-delta.com/blog/landslide-detection-satellite-sar-optical)
- [Volcanic Eruption Monitoring from Space](https://offnadir-delta.com/blog/volcanic-eruption-monitoring-satellites)
- [Oil Spill Detection with Satellite SAR](https://offnadir-delta.com/blog/oil-spill-detection-satellite-sar)
- [Post-Disaster Infrastructure Assessment from Space](https://offnadir-delta.com/blog/post-disaster-infrastructure-assessment)
- [Satellite Rapid Damage Mapping Workflow](https://offnadir-delta.com/blog/satellite-rapid-damage-mapping-workflow)
- [Urban Heat Islands from Satellite Thermal Data](https://offnadir-delta.com/blog/urban-heat-island-satellite-thermal)
- [Urban Sprawl Monitoring with Satellite Time Series](https://offnadir-delta.com/blog/urban-sprawl-monitoring-satellite-time-series)
- [Construction Monitoring from Satellite Imagery](https://offnadir-delta.com/blog/construction-monitoring-satellite-imagery)
- [Solar Farm Mapping and Detection from Space](https://offnadir-delta.com/blog/solar-farm-mapping-satellite-detection)
- [Ground Subsidence Monitoring with InSAR](https://offnadir-delta.com/blog/ground-subsidence-insar-monitoring)
- [Population Estimation from Satellite Imagery](https://offnadir-delta.com/blog/population-estimation-satellite-imagery)
- [Reservoir Water Level Monitoring with Satellite Altimetry](https://offnadir-delta.com/blog/reservoir-water-level-satellite-altimetry)
- [Wetland Mapping with SAR and Optical Satellites](https://offnadir-delta.com/blog/wetland-mapping-satellite-sar-optical)
- [Evapotranspiration Estimation from Satellite Thermal Data](https://offnadir-delta.com/blog/evapotranspiration-satellite-estimation)
- [Groundwater Depletion Tracking with GRACE Satellites](https://offnadir-delta.com/blog/groundwater-depletion-grace-satellite)
- [Estimating Forest Biomass from Satellite Data](https://offnadir-delta.com/blog/forest-biomass-estimation-satellite)
- [Mapping Burn Severity After Wildfires with NBR](https://offnadir-delta.com/blog/forest-fire-burn-severity-satellite)
- [Forest Degradation vs. Deforestation: Detection Challenges](https://offnadir-delta.com/blog/forest-degradation-vs-deforestation-satellite)
- [Mapping Tree Canopy Height from Space](https://offnadir-delta.com/blog/tree-canopy-height-satellite-lidar)
- [Forest Type Classification from Satellite Imagery](https://offnadir-delta.com/blog/forest-type-classification-satellite)
- [Modern WebGIS Architecture](https://offnadir-delta.com/blog/webgis-architecture-modern-stack)
- [Google Earth Engine: Power and Limitations](https://offnadir-delta.com/blog/google-earth-engine-satellite-analysis)
- [Open Data Cube for Satellite Time Series](https://offnadir-delta.com/blog/open-data-cube-satellite-time-series)
- [Digital Elevation Models Compared: SRTM, ALOS, Copernicus](https://offnadir-delta.com/blog/digital-elevation-models-dem-comparison)
- [Machine Learning for Satellite Image Classification](https://offnadir-delta.com/blog/machine-learning-satellite-image-classification)
- [STAC Explained: Satellite Data Discovery Standard](https://offnadir-delta.com/blog/stac-spatiotemporal-asset-catalog-guide)
- [Satellite Data in Insurance Risk Assessment](https://offnadir-delta.com/blog/satellite-insurance-risk-assessment)
- [Satellite Monitoring of Mining Operations](https://offnadir-delta.com/blog/satellite-monitoring-mining-operations)
- [Satellite Data for Precision Agriculture](https://offnadir-delta.com/blog/satellite-data-precision-agriculture)
- [Maritime Vessel Detection from Satellite SAR](https://offnadir-delta.com/blog/satellite-maritime-vessel-tracking)
- [Supply Chain Monitoring from Space](https://offnadir-delta.com/blog/satellite-supply-chain-monitoring)
- [Satellite Archaeology and Cultural Heritage](https://offnadir-delta.com/blog/satellite-archaeology-cultural-heritage)
- [Sentinel-2 vs. Landsat 9: A Practical Comparison](https://offnadir-delta.com/blog/sentinel-2-vs-landsat-9-comparison)
- [Satellite Image Compositing and Mosaicking](https://offnadir-delta.com/blog/satellite-image-compositing-mosaicking)
- [How to Monitor Any Area with Satellite Time Series](https://offnadir-delta.com/blog/satellite-area-monitoring-time-series-guide)
- [Vegetation Index Time Series Monitoring with Sentinel-2](https://offnadir-delta.com/blog/vegetation-index-time-series-monitoring)
- [SAR Backscatter Time Series: Detecting Change with Radar](https://offnadir-delta.com/blog/sar-time-series-change-monitoring)
- [Satellite Anomaly Detection in Time Series Data](https://offnadir-delta.com/blog/satellite-anomaly-detection-time-series)
- [Continuous Maritime Monitoring with SAR Ship Detection](https://offnadir-delta.com/blog/continuous-maritime-monitoring-sar-ship-detection)
- [Monitoring Economic Activity with VIIRS Nighttime Light Time Series](https://offnadir-delta.com/blog/viirs-nighttime-lights-time-series-monitoring)
- [Monitoring Water Surface Changes with NDWI Time Series](https://offnadir-delta.com/blog/ndwi-water-surface-change-monitoring)
- [Forest Health Monitoring with NDVI and SAR Vegetation Indices](https://offnadir-delta.com/blog/forest-health-monitoring-ndvi-rfdi)
- [Post-Disaster Recovery Monitoring with Satellite Time Series](https://offnadir-delta.com/blog/post-disaster-recovery-monitoring-satellite)
- [Seasonal Crop Monitoring with NDVI Time Series](https://offnadir-delta.com/blog/crop-season-monitoring-ndvi-time-series)
- [Coastal Change Monitoring with NDWI and SAR Time Series](https://offnadir-delta.com/blog/coastal-change-monitoring-ndwi-sar)
- [Wildfire Recovery Monitoring: From Burn Scar to Regrowth](https://offnadir-delta.com/blog/wildfire-recovery-monitoring-nbr-ndvi)
- [Flood Monitoring with Sentinel-1 SAR Time Series](https://offnadir-delta.com/blog/flood-monitoring-sar-time-series)
- [Multi-Index Satellite Monitoring: Why One Sensor Is Never Enough](https://offnadir-delta.com/blog/multi-index-satellite-monitoring)
- [Environmental Compliance Monitoring with Satellite Imagery](https://offnadir-delta.com/blog/environmental-compliance-monitoring-satellite)
- [How to Choose the Right Satellite Index for Monitoring](https://offnadir-delta.com/blog/how-to-choose-satellite-index-monitoring)
- [Introducing Delta Signals: Geospatial Event Intelligence for Satellite Monitoring](https://offnadir-delta.com/blog/delta-signals-geospatial-event-intelligence)
- [Evidence-Based Event Intelligence: How Delta Signals Stays Source-Linked and Auditable](https://offnadir-delta.com/blog/evidence-based-event-intelligence-source-linked-geolocated)
- [Harmonized Landsat Sentinel (HLS): One Consistent Time Series from Two Sensors](https://offnadir-delta.com/blog/harmonized-landsat-sentinel-hls-guide)
- [The Landsat Program: A Complete Guide to 50+ Years of Earth Observation](https://offnadir-delta.com/blog/landsat-program-complete-guide)
- [Synthetic Aperture Radar (SAR): The Complete Guide](https://offnadir-delta.com/blog/synthetic-aperture-radar-complete-guide)
- [MODIS Satellite Data: The Daily, Decades-Long View of Earth](https://offnadir-delta.com/blog/modis-satellite-data-guide)
- [How Accurate Is Satellite Data? A Practical Guide to Validation and Uncertainty](https://offnadir-delta.com/blog/satellite-data-accuracy-validation-guide)
- [CO₂ and Carbon Monitoring from Satellites: Measuring the Invisible](https://offnadir-delta.com/blog/co2-carbon-monitoring-satellites)
- [Coastal Erosion Monitoring from Satellites: Tracking Shoreline Change](https://offnadir-delta.com/blog/coastal-erosion-shoreline-monitoring)
- [Deep Learning for Earth Observation: From CNNs to Semantic Segmentation](https://offnadir-delta.com/blog/deep-learning-earth-observation-guide)
- [Geometric Correction and Orthorectification of Satellite Imagery](https://offnadir-delta.com/blog/geometric-correction-orthorectification)
- [Hyperspectral Remote Sensing: What 200+ Bands Reveal That Multispectral Can't](https://offnadir-delta.com/blog/hyperspectral-remote-sensing-prisma-enmap)
- [Pansharpening: How to Get High-Resolution Multispectral Imagery](https://offnadir-delta.com/blog/pansharpening-resolution-enhancement)
- [SAR-Optical Data Fusion: Getting More from Two Sensors Than Either Alone](https://offnadir-delta.com/blog/sar-optical-data-fusion-techniques)
- [Satellite Imagery for Agriculture: What Actually Works at Field Scale](https://offnadir-delta.com/blog/satellite-imagery-agriculture-field-monitoring)
- [Spatial vs Temporal Resolution: The Fundamental Trade-Off in Satellite Imaging](https://offnadir-delta.com/blog/spatial-resolution-vs-temporal-resolution)

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- [NISAR L-Band SAR vs Sentinel-1 C-Band: When Does Wavelength Decide the Answer?](https://offnadir-delta.com/blog/nisar-l-band-sar-vs-sentinel-1)

## 10. How It Works, Provenance & Status

- [Methodology](https://offnadir-delta.com/methodology): How signals are collected, AI-enriched, geolocated and scored — including what is automated and what is not reviewed by a human
- [Security](https://offnadir-delta.com/security): Data handling, authentication and infrastructure practices
- [Status](https://offnadir-delta.com/status): Current service status and the version the live API/MCP surface reports
- [Changelog](https://offnadir-delta.com/docs/changelog): What changed and when
- [Developer](https://offnadir-delta.com/author/kazushi-motomura): Kazushi Motomura — background and the basis for the technical claims on this site

---

## 11. Legal

- [Terms of Service](https://offnadir-delta.com/terms)
- [Privacy Policy](https://offnadir-delta.com/legal/privacy-policy)
- [Refund Policy](https://offnadir-delta.com/legal/refund-policy)
- [Commercial Transactions](https://offnadir-delta.com/legal/commercial-transactions)
- [Open Source Licenses](https://offnadir-delta.com/legal/oss-licenses)

---

## Developer (E-E-A-T)

**Created by:** Kazushi Motomura (Off-Nadir Lab)
**Note:** Personal independent project, not affiliated with any company.

**Credentials:**
- Master's in Earth System Science and Technology (Kyushu University); research in satellite oceanography
- 10+ years in satellite data processing
- Co-author, "Remote Sensing Encyclopedia" (Remote Sensing Society of Japan)

**Links:** [Website](https://offnadir-delta.com) | [GitHub](https://github.com/kazushi-fa) | [LinkedIn](https://www.linkedin.com/in/kazushi-motomura-bb168b28/)

---

## Citation

"Off-Nadir Delta - Real-Time Event & Geospatial Intelligence Platform by Off-Nadir Lab (https://offnadir-delta.com)"

Last Updated: 2026-08-06