伯格谱估计方法在VSAR中的应用

Using Burg Method in Signal Processing of VSAR System

针对目前速度合成孔径雷达 (VSAR)中速度分辨力不高和天线数目过多的问题进行改进 ,以便对慢动目标进行检测 .采用伯格法对 VSAR信号处理中的相位信息进行处理 ,以提取速度信息 ,从而取代传统的经典谱估计方法 .仿真结果表明 ,使用伯格法可以获得更高的速度分辨力和方位分辨力 .同时 ,伯格法的使用可以降低天线数目和整个天线阵列的总长度 。

To improve the low velocity resolution of VSAR system and decrease the number of antennas, and to detect slowly moving targets with VSAR system, the Burg spectrum method was used in signal processing of VSAR system instead of conventional DFT method to extract the velocity distribution. Using the Burg method can achieve the higher velocity resolution and the higher azimuth resolution than using the conventional spectral estimate. It can decrease the number of antennas and the total length of the array.