相位编码信号的多普勒补偿  

Doppler Compensation for Phase-Coded Signals

作　　者：胡英辉[1,2] 郑远[1,2] 耿旭朴[1,2] 邓云凯[1] 

机构地区：[1]中国科学院电子学研究所,北京100190 [2]中国科学院研究生院,北京100190

出　　处：《电子与信息学报》2009年第11期2596-2599,共4页Journal of Electronics & Information Technology

摘　　要：相位编码信号具有理想的接近图钉型的模糊函数,而在脉冲压缩处理中存在多普勒失配问题。本文在考虑脉内多普勒频移的情形下,建立了一种新的雷达测速-测距模型,并从二维图像重建的角度出发,推导了其多普勒补偿算法。理论分析和仿真试验表明:在考虑速度模糊和距离徙动的情况下,该方法能有效地解决因多普勒频移造成的失谐,得到接近理想情形的压缩效果。Phase-coded signals suffer from Doppler mismatch in pulse compression due to the characteristics of the ideal thumbtack ambiguity function.In this paper,a novel model of measuring velocity-and-range and the corresponding Doppler compensation algorithm from the perspective of 2D image reconstruction are described considering of the intra-pulse Doppler.Simulation shows that the proposed method solves the Doppler-mismatch problem and obtains the satisfactory compression result when velocity ambiguity and range migration are taken into account.

关 键 词：相位编码 多相码 多普勒补偿 多普勒敏感 

分 类 号：TN953[电子电信—信号与信息处理]