无人机载小型SAR目标分辨与定位能力分析

Capability Analysis of Target Separtion and Location of the Minitype SAR on UAV

分析了无人机载小型合成孔径雷达(SAR)可用于战场侦察的基本工作模式;讨论了SAR分辨率与对目标分辨能力的区别;从机载SAR成像几何关系的角度,研究了载机航向测量误差、载机空间位置测量误差、载机飞行速度测量误差、雷达高度误差、雷达斜距测量误差等因素对实时目标定位精度的影响程度,提出了实时定位与读图定位结合使用的观点。其结果对于无人机载小型SAR的设计和应用都有重要意义。

This paper analyses the basic working modes of minitype SAR on UAV for field reconnaissance, discusses the difference between SAR resolution and target separation capability. From the imaging geometry of the airborne SAR, this paper studies the influence extent to the target location precision from platform course measurement error, platform position measurement error, platform velocity measurement error, radar altitude error, bevel range measurement error of radar, and presents aviewpoint of combining the real-time location and image location. These results are very significant for the SAR design and application.