一种改进的球载雷达气象杂波建模方法  

An Improved Modeling and Simulation Method for Meteorology Clutter of Aerostat Radar

作　　者：张小涵 刘润华[1] 汪枫[1] ZHANG Xiaohan;LIU Runhua;WANG Feng(Air Force Early Warning Academy,Wuhan 430019,China)

机构地区：[1]空军预警学院

出　　处：《雷达科学与技术》2019年第3期324-328,334,共6页Radar Science and Technology

基　　金：湖北省自然科学基金(No.2016CFB288)

摘　　要：球载雷达由于雷达平台的升高并采用下视工作,面临着强的地海杂波和气象杂波。针对径向速度较小的目标落在气象杂波区会降低雷达检测性能这个问题,为了更好地抑制气象杂波,本文提出了一种球载雷达气象杂波建模方法。首先建立了气象杂波的空间模型和数学模型,然后分析了气象杂波的分辨特性和幅度频率特性,基本完成了球载雷达杂波建模。最后通过对杂波建模仿真及其MTD结果的分析,进一步揭示了气象杂波的特性,为下一步探讨球载雷达杂波抑制方法提供了支撑。Aerostat radar is faced with strong ground clutter,sea clutter and meteorology clutter due to the rise of radar platforms.Aiming at the fact that the targets with small radial velocity fall into the meteorology clutter,which will reduce the detection performance of radar,a method of modeling the meteorology clutter is proposed in this paper to better suppress the meteorology clutter.First,the space model and mathematical model of meteorology clutter is set up.Then the resolution characteristics and amplitude-frequency characteristics of meteorology clutter are analyzed.The meteorology clutter modeling of aerostat radar is completed basically.Through analyzing the modeling and simulation of meteorology clutter and the MTD simulation results,the characteristics of meteorology clutter is further revealed.Our efforts could provide a support for the next step to discuss clutter suppression methods for aerostat radar.

关 键 词：球载雷达 气象杂波 多普勒频移 杂波建模 

分 类 号：TN957[电子电信—信号与信息处理] TN959.74[电子电信—信息与通信工程]