The Application Of Back-projection Algorithm In Bi-static Synthetic Aperture Radar

Bistatic Synthetic Aperture Radar is the synthetic aperture radar system whichputs transmitter and receiver on different delivery platforms. In recent decades, bistaticSAR gradually become the focus of scientific research, because of its excellent abilityof obtaining information, good security and good anti-interference.This paper studies bistatic synthetic aperture radar imaging algorithm. Because ofthe particular configuration of bistatic synthetic aperture radar, a lot of maturemonostatic imaging algorithms based on Fast Fourier Transform are very difficult todirect transplant. So time-domain imaging algorithm becomes the direct solution tobistatic synthetic aperture radar imaging, however time-domain imaging algorithmweakness is a huge operation. In this paper, the error of the back-projection algorithmis analyzed in detail, a method based on error analysis, lookup table and parallelprocessing is introduced. The method runs much faster and maintains the image quality.The result of the method is validated by applying it on real data.Chapter one introduces the background of bistatic synthetic aperture radar.Chapter two analyzes the system parameters when receiver and transmitter flyingparallel and receiver fixed. Chapter three analyzes back projection algorithm, then givesimulation analysis of several geometric configuration model of bistatic syntheticaperture radar. Chapter four proposes a new time domain method of restoring carrierwave, save a faster time interpolation operation. Chapter five proposes the fastmethond of square root operation and trigonometry operation; next draw on parallelprocessing method of back projection algorithm. Finally, presents the experimentalresults.