Preliminary analysis of cross-track interferometry by synthetic beam of two antennas of along-track interferometric SAR

Many parameters are required for the measurement of the sea surface currents and the sea levels simultaneously by the along-track interferometry SAR (AT-InSAR). To estimate the elevation or the sea levels from the signals observed by the AT-InSAR, the method for synthesizing these received signals was developed. To evaluate the estimation method, the ground surface was observed by the cross-track interferometrie SAR (CT-InSAR) and AT-InSAR. In addition, to clarify the accuracy of the digital surface model (DSM) estimated from the signals observed by the AT-InSAR, The experiment with the corner reflectors was conducted. As a result, it became clear that the DSM can be estimated from the signals observed by the AT-InSAR.