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.
出处
《西华大学学报（自然科学版）》
CAS
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)
关键词
单脉冲雷达
宽带
和
差通道
幅相校正
monopulse radar
wideband
sum/difference channel
amplitude and phase correction
