风轮机雷达回波的仿真与分析  

Simulation and Analysis of Wind Turbine Echoes

作　　者：何炜琨[1] 石玉洛 王晓亮[1] 马愈昭[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：《系统仿真学报》2015年第1期50-56,共7页Journal of System Simulation

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);国家自然科学基金委员会资助项目(61172112);中央高校基金资助课题(ZXH2012D001;3122013C008)

摘　　要：风轮机对空管雷达、通信、导航等电子设备会产生严重影响,风轮机的电磁散射特性及其回波仿真技术对于风电场杂波抑制、保证空中交通安全具有重要的意义。基于风轮机散射点叠加的模型,研究了风轮机雷达回波信号的仿真问题,考虑了雷达入射波的方位角和俯仰角对回波信号的影响,建立了任一观测点处雷达回波信号模型及其回波仿真曲线,对雷达回波信号的时域、频域和时频域特性进行了分析,为风轮机叶片长度、叶片转速、叶片个数等参数的辨识提供相应的理论基础。仿真结果与理论推导及文献中的实测结果进行了比较分析,证明了回波仿真模型的有效性。Wind turbines can have serious effect on ATC radar, communication and navigation equipments. Thus electromagnetic scattering features of wind turbine and its echo simulation technology are of vital significance to wind farm clutter suppression and ensure air traffic safety. Based on the model of wind turbine scattering points superposition, the radar echo simulation of the wind turbine was studied.Meanwhile, the effect of azimuth angle and elevation angle of the incident wave on the echoes were considered and the model of radar echo signal for any observation points was established. In addition, the characteristics of time domain, frequency domain and time-frequency domain of the echoes signal were analyzed respectively, which provided the corresponding theoretical basis for the identification of the wind turbines parameters, such as the length, rotation rate and number of wind turbine blades. Simulation results demonstrate the validity of the proposed echo simulation model in comparison with theoretical derivation and the results in the references.

关 键 词：风轮机 雷达 散射特性 任一观测点 

分 类 号：TM315[电气工程—电机] TN958[电子电信—信号与信息处理]