一种精确的前斜视SAR方位高分辨分析方法

A novel analysis of the high resolution characters of squint SAR

基于前斜视SAR的运动特点和波束在场景平面上的扫描规律,建立了点目标与天线相位中心的瞬时斜距模型,提出了一种新的关于前斜SAR方位向高分辨特征分析的方法,通过对前斜视SAR合成孔径长度及方位分辨特性的研究,给出了合成孔径长度与方位分辨率近似公式的使用条件并作为前斜视SAR较为精确地成像与合理简化数据处理的基本依据.

Based on the motion of the platform and on the scanning rules of the squint SAR, the paper constructs the exact range model between APC and target, and then presents a novel anlaysis of the high resolution characters in azimuth of squint SAR. Through a deep research on the length of synthetic aperture and on the azimuth resolution, we have developed the application conditions for various formula about the two important parameters, which is vital in exactly imaging and briefly but reasonably processing.