该文针对双基地SAR地面距离分辨率计算方法问题,分析了空间梯度的物理意义,研究了回波延迟时间的空间梯度随时间变化的性质,完善了一种新的基于空间梯度的双基地合成孔径雷达距离分辨率计算方法,该算法更具有普遍适用性。仿真验证了算法的正确性,并提出了基于距离分辨率动态优化的双基地SAR航路规划方法。
In this paper, a new approach to bi-static SAR range resolution in ground plane, based on special gradient of transit time, is developed. This new approach has more adaptability. The physical meaning of special gradient is analyzed and its temporal changing property is also researched. Detailed simulations test the validity of the approach and some methods for Bi-SAR trajectory planning, dynamically optimized based on range resolution, are provided at the end of the paper.