介绍了机载火控雷达主杂波中心频率精确跟踪的方法,综合采用了主杂波粗跟踪、线间地速校正迭代、帧内主杂波距离-频率校正和功率谱相关函数法估计4种算法对主杂波中心频率进行精确估计,分析了4种估计算法的精度特性,给出了工程应用结果。该方法已成功应用于空时自适应处理的地面慢动目标检测方式。

One method of central frequency of main clutter accuracy tracking for the airborne fire control radar system is introduced.Central frequency of main clutter is estimated accurately using combined methods,including central frequency of main clutter inaccuracy tracking,interline ground speed correction and iterative repetition,in-frame distance to frequency correction of the main clutter,power spectrum estimation.Precision of the four methods estimating central frequency of main clutter is also discussed.The paper presents the results in engineering practice.This method has been successfully applied in STAP GMTI mode.

TN959.73