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高精度干涉测高雷达回波快速实现方法

DOI: 10.11990/jheu.201406031

Keywords: 半实物仿真, 干涉测高雷达, 回波模拟, 图形处理器, 升采样

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Abstract:

雷达回波半实物仿真是研究雷达系统参数及其处理算法的有效手段。回波模拟的精度对判定雷达系统处理结果的有效性和准确性有直接影响。基于此提出了一种提高干涉测高雷达回波仿真精度的方法,利用升采样技术,尽可能减小因距离取整带来的相位误差,处理完成后再利用降采样恢复到原始采样率,以便于在工程上实现。采用图形处理器(GPU)完成回波数据的快速产生,极大地提高了运算效率,大大缩短了回波数据产生所需的时间。半实物仿真试验表明:该方法不仅能将回波仿真精度提高上百倍,还能将试验时间缩短为原来的百分之一,极大地提高了试验效率。

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