Novel Techniques for Error Minimization in SAR RF and Interferometric Signal Processing

A lot of efforts have been put in so far in the satellite/air borne SAR interferometric RF signal processing to develop easier yet accurate methods of generating topographic maps and other earth deformations due natural hazards. However, there still remain short comings while taking into account certain important factors during various processing steps, which cause un-bearable errors. In this paper efforts have been made to encompass all areas in the conventional SAR interferometry where the processing errors are encountered. Methods and relationships have been developed including use of different RF wave polarizations to obtain accurate topographic maps and invert the errors. The relevant processing steps have been identified and recommendations have been made with the help of simulation results to bridge the gaps between the desired and the actual SAR signal processing. The necessary steps involved in wave transmission and processing the received data to the geometrically compensated digital models have been explained with the help of developed algorithms and resulting simulations