Digital Terrain Elevation Models Produced using Radar Altimetry and GPS Data

Acquisition of any airborne geophysical data set involves two parameters: measurement of the actual signal being sought and definition of the position where each data observation is acquired. GPS provides accurate estimates of the location of the sensor position relative to a defined ellipsoid. If at the same time one measures the distance from the observation platform to the surface of the Earth, using a radar altimeter, it is then possible to …