monitoring
33 articlesWatching a Place: Measuring a Number vs Watching for Events
Continuous satellite monitoring splits into two jobs that get confused constantly — measuring a quantity over a polygon and watching an area for events. Which one you set up decides whether your watch says nothing or says too much.
2026-08-23 · 7 min read
Watching Mines, Tailings Dams, and Industrial Sites from Space: Environmental and Operational Risk
Satellites monitor the industrial sites you cannot walk onto — mine footprints, tailings storage, refineries, and their surroundings — for environmental and operational risk. A practical guide to what open imagery resolves, which sensors and techniques matter, and how to keep a standing watch without code.
2026-07-01 · 6 min read
Port Congestion and Supply-Chain Risk: What Satellites See That Shipping Data Misses
AIS tracks the ships that broadcast. Satellites see the anchorage that fills up, the berths that sit idle, and the queue that forms before any delay reaches a schedule — a practical guide to reading port disruption from space for supply-chain and risk teams.
2026-07-01 · 6 min read
Unsupervised Anomaly Detection in Satellite Time Series: When AI Learns 'Normal'
How unsupervised methods flag change in a satellite time series without labelled training data — from the ±2σ rule to seasonal decomposition and isolation forests — and how to watch an area for anomalies without writing code.
2026-07-01 · 7 min read
How Accurate Is Satellite Data? A Practical Guide to Validation and Uncertainty
Satellite measurements are estimates, not ground truth. Learn the accuracy metrics that matter — RMSE, MAE, bias, R², confusion matrices, and cloud confidence — how to validate results, and how to communicate uncertainty honestly in any remote sensing analysis.
2026-06-21 · 5 min read
MODIS Satellite Data: The Daily, Decades-Long View of Earth
MODIS provides daily global coverage and a 20+ year archive at 250m-1km resolution. Learn what MODIS measures, its key products (NDVI, land surface temperature, active fire), how it trades resolution for frequency, and when coarse-resolution daily data beats high-resolution imagery.
2026-06-20 · 4 min read
Synthetic Aperture Radar (SAR): The Complete Guide
A complete, structured guide to Synthetic Aperture Radar (SAR) for Earth observation — how SAR works, why it sees through clouds, polarization, backscatter, InSAR, and the full range of applications from flood mapping to ship detection. Your hub for every SAR topic.
2026-06-19 · 5 min read
Harmonized Landsat Sentinel (HLS): One Consistent Time Series from Two Sensors
HLS merges Landsat 8/9 and Sentinel-2 into a single, atmospherically corrected 30m dataset with 2-3 day revisit. Learn how harmonization works, what HLSL30 and HLSS30 contain, and when a fused time series beats a single sensor.
2026-06-17 · 5 min read
Introducing Delta Signals: Geospatial Event Intelligence for Satellite Monitoring
Delta Signals overlays AI-enriched geospatial event data directly on your monitored areas — connecting what satellites see with what is happening on the ground.
2026-04-16 · 7 min read
How to Choose the Right Satellite Index for Your Monitoring Goal
Choosing between NDVI, SAR VV, NDWI, NDBI, NBR, DNB and other indices depends on what you want to monitor. This decision guide matches monitoring goals — vegetation health, floods, urban growth, fires, economic activity — to the best index and satellite sensor.
2026-04-14 · 7 min read
Environmental Compliance Monitoring with Satellite Imagery
Satellite time series monitoring allows companies, NGOs, and regulators to objectively verify deforestation commitments, track ESG land use pledges, and monitor supply chain sourcing areas. Learn how NDVI and SAR time series create an always-on compliance monitoring system.
2026-04-13 · 8 min read
Multi-Index Satellite Monitoring: Why One Sensor Is Never Enough
Monitoring a site with a single index misses events that only appear in other data streams. Combining NDVI, SAR backscatter, NDWI, and nighttime lights for the same polygon creates a complete picture that no single sensor can provide.
2026-04-12 · 8 min read
Flood Monitoring with Sentinel-1 SAR Time Series: Tracking Inundation from Space
SAR backscatter time series from Sentinel-1 detects flood onset, peak inundation, and recession through clouds. Learn how VV backscatter drops indicate flooding, how to set up continuous flood monitoring zones, and how to interpret SAR time series for disaster response.
2026-04-11 · 9 min read
Wildfire Recovery Monitoring: From Burn Scar to Regrowth
Post-fire vegetation recovery is one of the most revealing applications of satellite time series monitoring. NBR and NDVI together track the complete trajectory from fire damage through initial regrowth to mature vegetation recovery, revealing ecological resilience and identifying areas at risk of degradation.
2026-04-08 · 8 min read
Post-Disaster Recovery Monitoring with Satellite Time Series
Satellite time series monitoring tracks the recovery trajectory after floods, earthquakes, wildfires, and other disasters. Learn how NDVI, SAR backscatter, NDWI, and nighttime lights collectively reveal what has recovered, what has not, and where recovery is lagging.
2026-04-04 · 8 min read
Forest Health Monitoring with NDVI and SAR Vegetation Indices
Combining Sentinel-2 NDVI with Sentinel-1 SAR indices like RVI and RFDI provides comprehensive forest health monitoring that works through clouds. Learn how optical and radar time series complement each other to detect deforestation, degradation, and stress before it becomes visible to the naked eye.
2026-04-02 · 8 min read
Monitoring Water Surface Changes with NDWI and MNDWI Time Series
NDWI and MNDWI time series from Sentinel-2 track changes in open water extent, reservoir levels, and flood dynamics. Learn how to set up water body monitoring, interpret seasonal patterns, and detect anomalies like drought drawdown or sudden flooding.
2026-04-01 · 7 min read
Monitoring Economic Activity and Infrastructure with VIIRS Nighttime Light Time Series
VIIRS nighttime light (DNB) time series from NASA Black Marble tracks economic activity, electrification, conflict impacts, and post-disaster recovery. Learn how to monitor any area's nighttime brightness over time and interpret what changes mean.
2026-03-30 · 8 min read
Continuous Maritime Monitoring with SAR Ship Detection Time Series
SAR-based ship detection from Sentinel-1 provides vessel counts for any ocean area, updated every 6–12 days. Learn how continuous maritime monitoring reveals port activity, fishing effort, traffic patterns, and anomalies without AIS data dependency.
2026-03-29 · 11 min read
Satellite Anomaly Detection in Time Series Data: How It Works
Anomaly detection in satellite time series identifies data points that deviate significantly from expected seasonal patterns. Learn how statistical methods flag unusual events in NDVI, SAR backscatter, and other indices — and how to distinguish real environmental events from noise.
2026-03-27 · 9 min read
SAR Backscatter Time Series: Detecting Change with All-Weather Radar
Sentinel-1 SAR backscatter time series detects land surface changes regardless of cloud cover or daylight. Learn how VV, VH intensity, RVI, RFDI, and Cross Ratio respond to flooding, deforestation, vegetation growth, and construction events.
2026-03-26 · 7 min read
Vegetation Index Time Series Monitoring with Sentinel-2
NDVI, EVI, SAVI and other vegetation indices from Sentinel-2 are most powerful when tracked over time. Learn how time series monitoring reveals seasonal cycles, stress events, and long-term trends in forests, croplands, and grasslands.
2026-03-20 · 8 min read
How to Monitor Any Area with Satellite Time Series: A Complete Guide
Area monitoring with satellite time series lets you automatically track changes in any region over weeks, months, or years. Learn how to set up a monitoring zone, choose the right index, and interpret results using Sentinel-1, Sentinel-2, and VIIRS data.
2026-03-19 · 11 min read
Satellite Archaeology: Discovering and Monitoring Cultural Heritage from Space
How satellite imagery reveals buried archaeological features, monitors heritage site threats, and supports cultural landscape documentation. Covers spectral indicators, SAR subsurface detection, and UNESCO monitoring applications.
2025-12-20 · 9 min read
Supply Chain Monitoring from Space: How Satellites Track Global Commerce
How satellite imagery monitors supply chain activity — port congestion, factory output, commodity stockpiles, and transportation networks. Covers the methods behind satellite-based economic intelligence and trade monitoring.
2025-12-15 · 8 min read
Satellite Monitoring of Mining Operations: Compliance, Environment, and Safety
How satellite imagery monitors mining activities — pit expansion, tailings dam integrity, environmental compliance, and unauthorized operations. Covers optical change detection, SAR displacement monitoring, and regulatory applications.
2025-12-02 · 8 min read
Ground Subsidence Monitoring with InSAR: Detecting Sinking Cities from Space
How satellite InSAR measures ground subsidence caused by groundwater extraction, mining, and natural processes at millimeter precision. Covers PS-InSAR methodology, global hotspots, and infrastructure risk assessment.
2025-09-27 · 8 min read
Construction Monitoring from Satellite Imagery: Tracking Projects from Space
How satellite imagery monitors construction progress at infrastructure projects, mining operations, and development sites. Covers change detection methods, temporal baselines, and practical applications in project verification.
2025-09-21 · 8 min read
Oil Spill Detection with SAR: How Radar Spots Pollution on the Ocean
How SAR satellites detect oil spills on the ocean surface by identifying areas of dampened sea surface roughness. Covers the physics, operational systems, look-alike discrimination, and response coordination.
2025-09-07 · 8 min read
Volcanic Eruption Monitoring from Space: Detecting Unrest Before Disaster
How satellites monitor volcanoes using thermal anomaly detection, SO₂ plume tracking, InSAR deformation mapping, and ash cloud monitoring. Covers operational systems and the challenge of monitoring 1,500+ active volcanoes.
2025-09-04 · 8 min read
Landslide Detection and Monitoring with Satellite Data
How optical and SAR satellites detect landslides after they occur and monitor slow-moving slopes before catastrophic failure. Covers InSAR displacement monitoring, optical scar mapping, and susceptibility assessment.
2025-09-01 · 7 min read
Deforestation Monitoring with Satellite Data: How We Track Forest Loss Globally
How satellite systems like Landsat, Sentinel-1/2, and MODIS detect and monitor deforestation in near-real-time. Covers optical and SAR approaches, the Global Forest Watch system, and challenges in tropical forests.
2025-07-28 · 7 min read
Drought Monitoring with Satellite Data: Indices, Methods, and Early Warning
How satellite-derived vegetation, soil moisture, and precipitation indices track drought conditions from space. Covers VCI, TCI, SPI, and combined drought indices used by operational monitoring systems.
2025-07-11 · 8 min read