摘要
针对分布式卫星SAR的正侧视工作模式,该文建立了雷达信号的回波模型,提出了分布式卫星SAR中单个星载SAR的成像算法和利用波束形成和多视处理合成分布式卫星SAR图像的算法。理论分析和仿真结果表明:该算法能在不改变图像分辨力的情况下提高图像的信噪比和抑制相干斑,改善图像质量。
Based on the side-looking mode SAR of distributed satellites SAR system, This paper gives the mathematical model of SAR echo signal, and proposes a imaging algorithm of the single satellite SAR of distributed satellite SAR and a imaging algorithm of distributed satellite SAR system by beamforming and multilook. The results of theory analysis and simulation show that the algorithm can enhance SNR and suppress the speckle noise of resulted image without changing the resolution of SAR image., improve image's quality.
出处
《电子与信息学报》
EI
CSCD
北大核心
2002年第11期1620-1626,共7页
Journal of Electronics & Information Technology
关键词
分布式卫星SAR
正侧视
波束形成
多视处理
相干斑
Distributed satellites SAR system, Side-looking, Beamforming, Multilook, Speckle
