一种基于“等面积划分”思想的地杂波谱计算方法

A New Method of Computing Ground Clutter Based on “Equal Area Partition” Idea

基于“等距-等多普勒”划分的地表网格单元的面积计算问题一直是地杂波谱计算中的研究难点和热点。传统的方法是寻找“等距-等多普勒”单元面积的闭合形式的解析表达式。在简要介绍这种方法的基础上,讨论了其在实际应用中的局限性,提出了一种基于“等面积划分”思想的地杂波谱计算方法。它将复杂的解析问题离散化,简化了计算步骤。理论与仿真实验证明,将该方法应用于地杂波谱计算中不仅在理论上更为合理,而且精度也很高。

It's a hot and difficult problem of computing the ground clutter spectrum based on 'Doppler Range' partition. By the traditional means, people tried to search for a closed form of the analytical expression of the 'range doppler' cell's area. The above mentioned means is first of all briefly analyzed, then we discuss the above mentioned means' limitations, and propose a new computation method based on 'equal area partition 'idea, which reduces the calculation and digitized an analytical problem. After lots of experiments a conclusion has been made: Not only is this method more reasonable in theory ,but also the calculation is easier.