A combined methodology for SAR interferometric and stereometric error modeling

Both radar interferometry and radar stereo can be used to generate digital elevation maps. Usually, modeling of the achievable mapping accuracy of these techniques is done separately and the resulting sensitivity equations look quite different. Since both techniques solve for the location of a point through the intersection of various level surfaces associated to the sensor observing geometry it might be expected that some common methodology exists such that the common and unique features of each observation strategy would be more readily discernible. In this paper we present a methodology for the basic sensitivity equations for both radar interferometry and radar stereo that highlights the similarities and differences between these approaches.