Deciphering Earth Intelligence
The language of remote sensing is complex; the business impact shouldn't be. Use this index to validate vendor specs.
Ground Sample Distance (GSD)
Sensors & ImageryThe distance between pixel centers measured on the ground. A GSD of 30cm means one pixel represents 30cm of the earth's surface.
Business Impact
Lower GSD (higher resolution) drives cost exponentially. 30cm is standard for verification; 5-7.5cm is required for AI to detect roof damage.
Synthetic Aperture Radar (SAR)
Sensors & ImageryAn active radar system that can 'see' through clouds, smoke, and darkness by emitting its own energy pulses and measuring the return.
Business Impact
Critical for 24/7 monitoring and CAT response in regions with persistent cloud cover (e.g., tropics). The only way to map floods while the storm is still overhead.
Orthomosaic (Ortho)
Sensors & ImageryA series of aerial photos stitched together and geometrically corrected to be uniform, removing distortion so it can be used as an accurate map.
Business Impact
The industry standard for tax assessment and measuring building footprints. Essential for creating the 'base map' regarding property location.
Oblique Imagery
Sensors & ImageryImagery captured at an angle (usually 40–45 degrees) rather than straight down (nadir), allowing views of building facades.
Business Impact
Critical for Property Underwriting. Unlike standard maps, obliques reveal the number of stories, siding material, and soft-story risks.
Nadir
Sensors & ImageryImagery captured looking straight down (90 degrees) at the ground.
Business Impact
The most cost-effective view for basic location validation and impermeable surface mapping, but fails to show vertical assets or facade risks.
Hyperspectral Imaging
Sensors & ImagerySensors that capture light across hundreds of narrow spectral bands beyond the visible spectrum to identify materials by their chemical signature.
Business Impact
Acts as 'chemical fingerprinting' from the sky. Can identify specific roofing materials (asphalt vs. polymer) or distinguish healthy crops from stressed ones.
Leaf-On vs. Leaf-Off
Sensors & ImageryThe season of capture. 'Leaf-Off' is winter/spring (no leaves); 'Leaf-On' is summer (full canopy).
Business Impact
Leaf-Off is mandatory for accurate ground terrain modeling. Leaf-On is preferred for assessing vegetation overhang and wildfire fuel loads.
LiDAR
3D & ElevationLight Detection and Ranging. A remote sensing method using pulsed lasers to measure variable distances to the Earth, creating precise 3D maps.
Business Impact
The gold standard for precise vegetation management (utility corridors) and flood modeling, as it can 'see' through tree canopies to the ground.
Gaussian Splatting
3D & ElevationA rendering technique representing 3D scenes as millions of overlapping 3D 'blobs' (Gaussians) rather than geometric meshes.
Business Impact
Allows for real-time, photorealistic navigation of properties on standard web browsers. Enables underwriters to 'fly' through a site with perfect visual fidelity.
DSM vs. DTM
3D & ElevationDSM (Digital Surface Model) captures everything including trees/cars. DTM (Digital Terrain Model) captures only the bare earth.
Business Impact
Confusing these ruins risk models. Using a DSM for flood modeling causes water to flow 'over' trees incorrectly. You need DTMs for hydrology.
Point Cloud
3D & ElevationA set of data points in a 3D coordinate system (X, Y, Z), usually generated by LiDAR or photogrammetry.
Business Impact
The raw material for Digital Twins. Heavy to store, but necessary for engineering-grade measurements of infrastructure.
3D Mesh
3D & ElevationA wireframe structure draped with imagery to create a photorealistic 3D model of a city or object.
Business Impact
Allows adjusters to 'virtually visit' a property and rotate it 360 degrees, reducing the need for physical field inspections.
InSAR
3D & ElevationInterferometric Synthetic Aperture Radar. A technique for mapping ground deformation using radar images collected from orbiting satellites.
Business Impact
Used for detecting millimeter-level subsidence in infrastructure (dams, bridges) and mining operations, preventing catastrophic failures.
GeoAI
AI & GenAIGeospatial Artificial Intelligence. The application of computer vision and machine learning to spatial data to extract insights.
Business Impact
Automates scale. Instead of manual review, GeoAI processes 1 million properties in an hour to count swimming pools or detect roof geometry.
Geographic GenAI
AI & GenAIAI models that don't just analyze maps but generate *new* spatial data, such as synthetic imagery, in-painting clouds, or simulation.
Business Impact
Enables synthetic training data creation for rare events (e.g., specific disaster types) and privacy-safe simulation for risk modeling.
Foundation Models (Geospatial)
AI & GenAIMassive AI models pre-trained on petabytes of satellite imagery that understand Earth features generally and can be fine-tuned.
Business Impact
Lowers the barrier to entry. Allows companies to build custom detectors (e.g., 'solar panel detector') with only 50 examples instead of 10,000.
Vector Embeddings (Spatial)
AI & GenAIConverting locations and attributes into numerical vectors to capture semantic meaning (e.g., 'suburban vibe').
Business Impact
Enables 'Semantic Search' for the physical world. Allows users to query 'Show me neighborhoods that look like high-fire-risk California suburbs' without metadata.
Semantic Segmentation
AI & GenAIAn AI process that classifies every pixel in an image into a category (e.g., 'This pixel is roof,' 'This pixel is tree').
Business Impact
Converts pictures into spreadsheets. Allows insurers to query: 'Show me all properties in Zip Code 90210 with >30% tree overhang.'
ARD (Analysis Ready Data)
Data StrategySatellite data processed to a minimum set of requirements allowing for immediate analysis without additional user effort.
Business Impact
Reduces time-to-value for data science teams by 60-80% by removing the need for complex pre-processing and calibration.
Change Detection
Data StrategyAlgorithmic comparison of two images of the same location from different dates to highlight what has changed.
Business Impact
Automates renewals. If a homeowner adds a pool or deck, Change Detection flags it for premium adjustment without a human inspector.
Revisit Rate
Data StrategyHow frequently a satellite or aircraft images the same location (Daily, Monthly, Annually).
Business Impact
The trade-off between freshness and resolution. Satellites offer high revisit (daily) but lower quality; Planes offer low revisit (annual) but high quality.
Positional Accuracy (RMSE)
Data StrategyHow close a feature on the map is to its actual location in the real world.
Business Impact
Absolute accuracy matters for property lines; Relative accuracy matters for measuring roof length. Don't pay for survey-grade accuracy if you only need marketing-grade maps.
COG (Cloud Optimized GeoTIFF)
Tech StackA file format allowing users to stream just the part of the image they need without downloading the entire file.
Business Impact
Reduces cloud storage costs and speeds up applications. Essential for modern, web-based geospatial platforms.
Vector vs. Raster
Tech StackRaster is pixels (the picture); Vector is lines/polygons (the data derived from the picture).
Business Impact
You look at Raster; you analyze Vector. InsurTechs prefer ingesting vector data (Footprints) as it is lighter and machine-readable.
Tasking API
Tech StackAn API that allows software to programmatically request a satellite to capture a specific location at a specific time.
Business Impact
Enables automated tip-and-cue workflows (e.g., an IoT sensor triggers a satellite image) without human intervention.
TAM / SAM / SOM
Business StrategyTotal Addressable Market, Serviceable Available Market, and Serviceable Obtainable Market.
Business Impact
Investors require realistic SOM calculations backed by bottom-up data. Geospatial analysis validates this by physically counting potential customers.