扫描工作模式的航管监视雷达风电场回波信号的微多普勒特征分析  

Micro-Doppler Features Analysis of Wind Farm Echoes for Air Traffic Control Radar in Scanning Mode

作　　者：何炜琨[1] 郭双双[1] 王晓亮[1] 吴仁彪[1] 

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：《信号处理》2015年第10期1240-1246,共7页Journal of Signal Processing

基　　金：国家自然科学基金委员会与中国民航局联合资助项目(U1233109);中央高校基金资助项目(3122013C008;3122015D005;3122014D008)

摘　　要：风电场可能对航管监视雷达等电子设备产生严重影响。风电场回波是多个风轮机回波的相干叠加,由于复杂的多径环境使得航管监视雷达产生大量的虚假目标,因而分析风电场回波信号的微多普勒特征对风电场杂波检测与抑制,保证民航飞行安全具有重要意义。本文在风轮机回波信号散射点叠加模型的基础上,对扫描工作模式的航管监视雷达风电场回波信号进行了建模与仿真,详细分析了风电场中多个风轮机之间和风轮机与地面之间的多径效应对回波信号微多普勒特性的影响。仿真结果与理论推导进行了对比分析,证明了本文算法的有效性。The wind farms may be have serious impact on air traffic control radar and other electronic equipment. The echoes of wind farms are coherently superposed by multiple wind turbine echoes. Due to the complex multipath environment,air traffic control radar may produce a large number of false targets,the analysis of the micro-Doppler features of wind farms echoes is of great significance to wind farms clutter detection,suppression and the improvement of civil aviation flight safety. The model of wind turbine echoes for air traffic control radar in scanning mode is constructed based on the scattered point＇s superposition theory. The effect of multipath between the wind turbines and between wind turbine and ground on the micro-Doppler characteristics of echoes is studied,which can provide the theoretical foundation for the wind farm multipath clutter detection and inhibition. The comparison of the simulation results and the theoretical derivation demonstrate the effectiveness of the algorithm in this paper.

关 键 词：扫描工作模式 航管监视雷达 风电场 多径 微多普勒特征 

分 类 号：TN955[电子电信—信号与信息处理]