基于X波段SAR雷达成像算法研究  

Research on Radar Imaging Algorithm Based on X-band SAR

作　　者：王晨阳 姚金杰[1] 杨小严 WANG Chenyang;YAO Jinjie;YANG Xiaoyan(Shanxi Key Laboratory of Signal Capturing&Processing,North University of China,Taiyuan 030051)

机构地区：[1]中北大学信息探测与处理山西省重点实验室,太原030051

出　　处：《舰船电子工程》2024年第1期81-86,共6页Ship Electronic Engineering

摘　　要：成像算法对于SAR成像雷达的最终结果有着决定性作用,论文基于X波段的SAR成像雷达基础上,对成像算法的理论进行研究,讨论了成像算法的SAR空间分辨率和多普勒频移,重点分析了成像算法中距离向处理问题、距离徙动处理问题以及方位向处理问题。利用X波段SAR雷达进行了5m具体实物成像结果测试。结果表明:SAR雷达的距离向分辨率和方位向分辨率对雷达成像精度的影响很大;SAR雷达在正侧视的成像精度明显较好,在15°角斜侧视的成像结果不如正侧效果。这是由成像算法的局限性引起的。Imaging algorithm plays a decisive role in the final result of SAR imaging radar.Based on the X-band SAR imaging radar,this paper studies the theory of imaging algorithm,discusses the SAR spatial resolution and Doppler frequency shift of imag-ing algorithm,and focuses on the analysis of range processing,range migration processing and azimuth processing in the imaging al-gorithm.X-band SAR radar is used to test the imaging results of 5m objects.The results show that the range resolution and azimuth resolution of SAR radar have great influence on the imaging accuracy.The imaging accuracy of SAR radar is obviously better in front and side view,but the imaging result of oblique view at 15°Angle is inferior to that of front and side view.This is caused by the limi-tations of the imaging algorithm.

关 键 词：X波段 SAR雷达 成像算法 成像雷达实验 

分 类 号：TN98[电子电信—信息与通信工程]