一种高效的多视处理实现算法

A High-efficient Realization Algorithm of Multi-look Processing

在合成孔径雷达成像处理中,一般采用多视处理来消除纹斑噪声。文中针对合成孔径雷达多视处理的特点,提出了一种新的高效实现方法。利用滤波器组的多相结构,在方位维处理中将降采样处理提到滤波之前,减少了数据处理量在保持滤波器性能不变的同时,降低了各通道滤波器的阶数,从而大大降低了计算量,利于实时的多视成像处理实现。

For imaging processing of synthetic aperture radar, speckles usually are removed with multi-look processing. According to the features of multi-look processing of SAR, a new, high efficient realization method is presented in this paper. It utilizes the poly-phase structure of filter bank to change the order of down-sample processing and filtering, thus diminishing the data quantity to be processed, and at the same time reduces the computation volume. All these are advantageous to real time processing.