一种宽带单脉冲雷达和/差通道不平衡校正方法  

Wideband Correction Algorithm of Sum and Difference Channel Imbalance for Monopulse Radars

作　　者：卢刚[1] 祝俊[2] 雷雨[1] 

机构地区：[1]西华大学电气信息学院,四川成都610039 [2]电子科技大学电子工程学院,四川成都611731

出　　处：《西华大学学报（自然科学版）》2013年第3期59-62,共4页Journal of Xihua University:Natural Science Edition

基　　金：四川省信号与信息处理重点实验室开放研究基金项目(SZJJ2012-013)

摘　　要：为提高单脉冲雷达跟踪测量精度,减少和/差双通道幅相特性的不一致性对测角精度的影响,研究了单脉冲雷达在宽带情况下和/差通道幅相特性不平衡的校正问题并提出了一种校正方法。该方法通过本地测试信号获得参数,并以此构造插值滤波器对输出信号进行实时校正。仿真结果表明,采用该方法可以在雷达工作带宽内获得较高的幅相一致性,从而改善宽带情况下的单脉冲测角性能。In order to improve the tracking accuracy of monopulse radars, and decrease sum/difference channel amplitude phase inconsistency on angle measurement precision of the feature, this paper discusses the issues relating to correction imbalance between sum and difference channels in wideband monopulse radars. A wideband correction algorithm is presented. The calibration parameters are estimated by local test signals injection. And then, a bank of interpolation filter is constructed to correct the frequency dependent imbalance errors. Simulation results are also given to validate the improvement features of this method.

关 键 词：单脉冲雷达 宽带 和 差通道 幅相校正 

分 类 号：TN953.5[电子电信—信号与信息处理]