Review of Fast Back Projection Algorithms in Synthetic Aperture Radar
The Back Projection(BP)algorithm is an important direction in the development of synthetic aperture radar imaging algorithms.However,the large computational load of the BP algorithm has hindered its development in engineering applications.Therefore,techniques to enhance the computational efficiency of the BP algorithm have recently received widespread attention.This paper discusses the fast BP algorithm based on various imaging plane coordinate systems,including the distance-azimuth plane coordinate system,the ground plane coordinate system,and the non-Euclidean coordinate system.First,the principle of the original BP algorithm and the impact of different coordinate systems on accelerating the BP algorithm are introduced,and the development history of the BP algorithm is sorted out.Then,the research progress of the fast BP algorithm based on different imaging plane coordinate systems is examined,focusing on the recent research work completed by the author's research team.Finally,the application of fast BP algorithm in engineering is introduced,and the research development trend of the fast BP imaging algorithm is discussed.
Synthetic Aperture Radar(SAR)Fast back projection algorithmImaging planeCoordinate systemComputational efficiency
万方数据
维普
