低重频脉冲多普勒雷达解速度模糊新方法研究  

A New Approach to Resolve the Velocity Ambiguity of Low Repetition Frequency Pulse Doppler Radar

作　　者：陈超[1,2] 王宇飞[3] 强文义[1] 胡仕友[2] 

机构地区：[1]哈尔滨工业大学航天学院,哈尔滨150001 [2]北京华航无线电测量研究所,北京100013 [3]中国空间技术研究院总体部,北京100094

出　　处：《战术导弹技术》2012年第1期50-53,共4页Tactical Missile Technology

摘　　要：分析了使用距离微分法解速度模糊存在的精度不高,且不能实时得到目标速度的问题,在此基础上,将Kalman滤波解算的速度值应用到其中,在进行目标距离滤波的同时,将实时的距离变化率作为真实的目标速度进行计算,求出目标的无模糊速度。将此方法与相对距离跟踪的微分方法进行比较,计算结果表明,此方法提高了解速度模糊的准确性,且方法相对简单,易于工程实现。Disadvantages with range differential method in resolving velocity ambiguity are analyzed,including its low resolution accuracy and inability in obtaining the target velocity in real time.A new approach to resolve velocity ambiguity is proposed,which applies calculated velocity by Kalman filter.In this new approach,the real-time range variation rate is used as real target velocity in resolving the target＇s unambiguous velocity.This new approach is compared with range tracking differential method,and the resolution results show that the new approach can improve the accuracy in resolving velocity ambiguity and is relatively easier to be achieved in engineering.

关 键 词：脉冲多普勒雷达 速度模糊 KALMAN滤波 

分 类 号：TN95[电子电信—信号与信息处理]