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中文摘要：
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。
英文摘要：
Hardware-in-the-loop simulation is an effective means to research radar system parameters and processing algorithms. Echo simulation precision directly influences the effectiveness and accuracy of processing results in a ra- dar system. This article proposes an algorithm to raise the precision of interferometric radar echo simulation. It uses up-sampling technology to reduce the phase error caused by rounding off the distance as much as possible. For engi- neering implementation, the signal after processing would recover to the original sample rate by down-sampling. U- sing a graphic processing unit （GPU） , the echo data generated rapidly, which greatly raised efficiency, and great- ly reduced the time for generating echo data. hardware-in-the-loop simulation shows that this method can not only greatly improve the echo simulation precision by hundreds of times, and also reduce time by 99%. Thus this method greatly improves test efficiency.
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Noncircular-PARAFAC for 2D-DOA estimation of noncircular signals in arbitrarily spaced acoustic vect
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