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A stereo-synthetic aperture radar (stereo-SAR) technique is proposed to estimate the terrain height of a target area. A reference point with known altitude is located within the target area to calibrate the height estimation. The estimated height error can be reduced to one meter. This method requires the processing techniques of conventional SAR, while achieving a fairly flne resolution in height estimation for practical applications.

TERRAIN HEIGHT ESTIMATION USING A STEREO-SAR TECHNIQUE AIDED BY A REFERENCE POINT