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多通道ScanSAR成像仿真研究
引用本文:梁波,武昕伟,蒋一.多通道ScanSAR成像仿真研究[J].电子质量,2010(5):6-9.
作者姓名:梁波  武昕伟  蒋一
作者单位:解放军炮兵学院,安徽,合肥,230031
摘    要:多通道雷达系统能够克服传统合成孔径雷达(SAR)的局限。其中一个应用是在偏置相位中心方位向多波束模式(DPCMAB)中利用方位向多孔径SAR信号重构,有效实现了高分辨率宽测绘带成像。下一步的研究重点是高方位分辨率超宽测绘带成像。基于此,文章探讨在ScanSAR模式下的多通道SAR系统,分析多孔径重构结合ScanSAR模式出现的问题,通过多通道频域重构算法结合burst模式下的RD算法实现了多通道ScanSAR1]成像。仿真中所设计的系统够实现在几何分辨率4.95m下测绘带宽达到350km以上。

关 键 词:SAR  多通道非均匀采样重构  ScanSAR  多通道ScanSAR

Research on Multi-channel ScanSAR Imaging Simulation
Liang Bo,Wu Xin-wei,Jiang Yi.Research on Multi-channel ScanSAR Imaging Simulation[J].Electronics Quality,2010(5):6-9.
Authors:Liang Bo  Wu Xin-wei  Jiang Yi
Affiliation:(Artillery Academy of PLA, Anhui Hefei 230031)
Abstract:Multi-channel radar systems allow for overcoming the inherent limitation of conventional Synthetic Aperture Radar. One of the applications is using multi-aperture SAR signal reconstruction in azimuth for the Displaced Phase Center Multiple Azimuth Beam mode which enables high-resolution wide- swath imaging. As a next step, focus is turned to advanced concepts for the imaging of even wider swaths with high azimuth resolution. In this regard, the paper investigates the operation of multi-channel SAR systems in ScanSAR mode and analyses aspects of applying the mul-ti-aperture reconstruction in combination with burst mode operation. It achieves the multi-channel ScanSAR Imaging by combining multi- channel frequency domain algorithm with RD algorithm for burst operation mode. The system de-signed in the simulation enables the imaging of a 350km wide swath with a geometric resolution of 4.95m.
Keywords:SAR  ScanSAR
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