中国空间科学技术

中国空间科学技术

• •    

星载合成孔径雷达的分辨特性

袁孝康   

  1. 上海卫星工程研究所
  • 发布日期:1999-02-25

Resolution Performance of Satellite Borne SAR

Yuan Xiaokang (Shanghai Institute of Satellite Engineering,Shanghai 200240)   

  • Online:1999-02-25

被引次数

9

摘要： 较全面和详细地论述了星载合成孔径雷达（ＳＡＲ）的分辨特性；导出了距离分辨率、方位分辨率和辐射分辨率的定量关系式；阐述了多种辐射分辨率定义的内涵，并对其错误概率进行了比较；介绍了ＳＡＲ图像的分辨体积和可懂度的概念，并且完成了ＳＡＲ图像分辨特性的方形等效。这些论述对于ＳＡＲ图像质量的评估和比较，以及系统参数的折衷设计具有重要意义。

关键词: 合成孔径雷达, 星载雷达, 图像分辨率, 可懂度

Abstract: In this paper,the resolution performance for satellite borne synthetic aperture radar (SAR) are analyzed in detail.The expressions of range resolution,the azimuth resolution,and the radiometric resolution have been derived.The various definitions for the radiometric resolution and the error probability also compared with each other.The resolution volume and the interpretability for SAR images are introduced.The resolution of the equivalene square cell for SAR images is also given.This paper is significant for estimating the SAR image quality and selecting reasonably the SAR system parameters.