An Improved Back Projection Imaging Algorithm of Airborne Bistatic SAR

The geometry,the distance history and echo signal models of airborne bistatic SAR are built firstly.Then the imaging algorithm of bistatic SAR is summarized briefly.On the basis of analyzing the BP algorithm for monostatic SAR,the theory of BP algorithm for bistatic SAR is given,and an improved BP(algorithm) is discussed.At last the simulation results demonstrate the correctness of the back projection algorithm used in bistatic SAR.The improved BP algorithm is compared with RD algorithm.