Bistatic SAR imaging with parallel flight track based on monostatic SAR processor

Bistatic SAR uses separated transmitter and receiver flying on different platforms, and has the ability of the exploitation of additional information contained in the bistatic reflectivity of targets. This paper provides an efficient Nonlinear-Chirp Scaling (NCLS) algorithm for bistatic SAR with parallel track configure, which is based on the bistatic-to monostatic application (BTMA). The method described is a feasible solution for the image formation of bistatic SAR with such configure. The problem of Doppler ambiguity during the NCLS Processing and the choice of reference frequency are also discussed at last. This NCLS imaging algorithm is verified with a simulation experiment.