孔径渡越时间对一维距离成像的影响分析

Analysis of the Effect of the Aperture Fill Time in a Wideband Phase Array Radar on the Performance of One-Dimensional Range Profile

通过对宽带相控阵雷达扫描时孔径渡越时间对宽带线性调频信号成像性能影响的分析,得出了相控 阵雷达空间扫描只产生目标一维距离像主瓣宽度展宽与一维距离像整体平移的重要结论,并提出了补偿方法。实 验数据证明,这种补偿方法对宽带相控阵雷达是否需要加延时线进行空间补偿具有重要的参考意义。

In this paper, an analysis is made to show the effect of the aperture fill time in a wideband phase array radar on LFM signal imaging performance in range profiles. An important conclusion is obtained, that is aperture fill time only leads to mainlobe broadening and translating of target one-dimensional range profile. A compensation method for aperture fill time is presented. In the end, the experimental results demonstrate the efficiency of this compensation method. This method is of great significance to a wideband phase array radar in the problem whether time delay line is needed for space compensation.