一种基于电离层扰动校正抑制扩展多普勒杂波方法  

SDC suppression approach based on ionospheric disturbance rectification

作　　者：赵志国[1,2] 肖卉[1] ZHAO Zhiguo;XIAO Hui(Air Force EarlyWarning Academy,Wuhan 430019, China;No.93534 Unit, the PLA, Tianjin 301700, China)

机构地区：[1]空军预警学院 [2]93534部队

出　　处：《空军预警学院学报》2017年第1期15-18,共4页Journal of Air Force Early Warning Academy

基　　金：国家自然科学基金资助项目(51309232)

摘　　要：鉴于由多径传播产生的扩展多普勒杂波(SDC)制约了采用一维线阵天线的混合天地波雷达系统在船舶目标探测方面的实际应用,根据SDC在临近距离和方位单元之间的相关性校正电离层扰动,提出了一种基于电离层扰动校正多径SDC抑制方法,与已有多径SDC抑制方法相比,该方法不受SDC频谱模型限制.理论分析和仿真结果验证了该方法的有效性.Considering that the spread Doppler clutter (SDC) caused by multi-path propagation restricts the application of hybrid sky-surface-wave radar with one dimensional linear array antenna to ship targets detection,this paper, in the light of the fact that the ionospheric disturbance is rectified by the correlation of SDC in the near range and azimuth units, presents a multi-path SDC suppression approach based on ionospheric disturbance rectification. Contrast to the existing multi-path SDC suppression approach, the new one is not restricted by the SDC spectrum model. Theoretical analysis and the simulation results verify the effectiveness of the new approach.

关 键 词：混合天地波雷达 扩展多普勒杂波 船舶目标 电离层扰动 

分 类 号：TN958.93[电子电信—信号与信息处理]