摘要
逆合成孔径雷达(ISAR)在对舰船等大尺寸目标成像时,散射点越距离单元走动校正是关键问题之一.现有的算法都是基于目标的均匀旋转模型的,但实际中目标的转动常常是不均匀的.针对这一问题,本文给出了一种基于子回波包络校正的越距离单元走动校正算法,该算法通过对散射点子回波包络平移来校正距离走动,与转动模型无关,在目标非均匀转动情况下能校正散射点越距离单元走动.
For the inverse synthetic radar （ISAR） imaging of big targets like ships, scatters migration through range resolution cell （MTRC） is a key problem. Existing algorithms are all based on the model that targets rotate uniformly, but the rotation of targets is usually nonuniform in practice. To deal with this problem. A MTRC correction algorithm based on sub-echo envelope correction is presented. The method has no relation to any rotation model and can work well under the condition that targets rotate nonuniformly.
出处
《测试技术学报》
2007年第6期493-499,共7页
Journal of Test and Measurement Technology
关键词
ISAR
越距离单元走动
非均匀转动
包络平移
子孔径
inverse synthetic radar
migration through range resolution cell
nonuniform rotation
envelope shifting
sub-aperture
