Study on High Resolution, Wide Swath Synthetic Aperture Radar Using Multiple Transmit-Receive Apertures
应用多收发孔径实现高分辨率宽测绘带的合成孔径雷达研究

The most important specifications of space-borne Synthetic Aperture Radar(SAR)are resolution and swath width.But in conventional SAR,there is a well known trade-off between them because of the pulse mode.In this paper,a new method of multiple azimuth beams is proposed using multiple transmit-receive apertures to further improve the swath width and resolution in azimuth.In addition,it should be noticed that the radiation gain or the equivalent isotropic radiated power per unit area can be greatly increased and the Signal-Noise Rate(SNR) also becomes better.The implement of this method is introduced and comparison with STMAB method and conventional SAR is made with computer simulations,and the effectiveness of this method is illustrated.