That’s where digital terrain elevation data comes in. Yet, sometimes a partner needs more than latitude and longitude to get the job done. When US National Geospatial-Intelligence Agency (NGA) partners plan operations, the agency provides them with products that identify the latitude and longitude of various locations, so that they can pinpoint the path to their objective. With a 50-year legacy, Digital Terrain Elevation Data inches towards its next goal: 10-metre post spacing. Artist’s impression of the TanDEM-X synthetic aperture radar satellite.
