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针对SAR成像中的方位预滤波，讨论两种方位预滤波的算法。
In SAR imaging system two algorithms about azimuth prefilter are discussed in this paper.
在机载sar实时成像处理器中，方位预滤波比的选取对最终获得的方位分辨率有决定性的影响。
In an airborne SAR real time imager, the selection of azimuth pre filter ratio has a decisive effect on the final azimuth resolution.
距离向和方位向预滤波处理可提高图像对的相关性，但并不能完全去除几何去相关对性能的影响。
The influence of interrelation of the range and azimuth baseline and pre-filtering technology are pointed out.
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