机载阵列雷达风轮机回波信号建模与分析  

Modeling and analysis of wind turbine echoes for airborne array radar

作　　者：何炜琨[1] 刘昂 王晓亮[1] 张莹 陈敏[1] HE Weikun;LIU Ang;WANG Xiaoliang;ZHANG Ying;CHEN Min(Tianjin Key Laboratory for Advanced Signal Processing, Civil Aviation University of China, Tianjin 300300, China)

机构地区：[1]中国民航大学天津市智能信号与图像处理重点实验室,天津300300

出　　处：《系统工程与电子技术》2021年第3期666-675,共10页Systems Engineering and Electronics

基　　金：国家自然科学基金委员会与民航局联合项目(U1533110);中央高校基本科研业务费项目中国民航大学专项(3122018D011);天津市自然科学基金(19JCQNJC01000)资助课题。

摘　　要：针对机载雷达风电场杂波建模及影响分析研究相对较少的问题,将机载阵列天线回波模型与风轮机散射点叠加模型相结合,研究雷达处于机载平台时的风轮机回波信号建模问题。首先,建立了任一观测点处的风轮机回波信号模型,然后对风轮机回波在距离多普勒域、时频域和空时域的特征进行了分析,并与理论分析结果进行对比,最后验证了回波模型的有效性。In view of the relatively few research on clutter modeling and impact analysis of airborne radar wind farm,the airborne array antenna echo model with the wind turbine scattering point superposition model is combined to study the wind turbine echo signal modeling when the radar is on the airborne platform.Firstly,the wind turbine echo signal model at any observation point is established,and then the characteristics of the wind turbine echo in range Doppler domain,time-frequency domain and space-time domain are analyzed,and the results are compared with the theoretical analysis results.Finally,the validity of the echo model is verified.

关 键 词：机载阵列雷达 风轮机 回波仿真 时频分析 空时二维谱 

分 类 号：TN955[电子电信—信号与信息处理]