摘要
近年来MIMO毫米波雷达的广泛应用对天线的可靠性提出了更高的要求,于是提出一种功率测量法来间接检测天线异常。通过对雷达功率信号进行5/3提升小波去噪,采用滑窗差分法并结合最小二乘估计确定功率的跳变沿位置,对非跳变区间信号取上下包络,利用Hermite插值对包络进行曲线拟合,平均得到平滑功率信号曲线。实验结果表明,算法复杂度小、精度高,能够有效消除噪声对天线异常检测的干扰,对天线的间接评估与性能提升具有重要参考作用。
In recent years,the wide application of MIMO millimeter wave radar has put forward higher requirements for the reliability of the antenna.Therefore,a power measurement method is proposed to indirectly detect the abnormal antenna.The radar power signal was denoised by 5/3 lifting wavelet,and then the position of power jump edge was determined by sliding window difference method combined with least square estimation.The upper and lower envelope of non jump interval signal was taken,and the envelope was fitted by Hermite interpolation,and the smooth power signal curve was obtained by averaging.The experimental results show that the algorithm has low complexity and high accuracy,and can effectively eliminate the interference of noise on the antenna anomaly detection,which has an important reference role for the indirect evaluation and performance improvement of the antenna.
作者
张晓冬
唐文明
蒋耿明
ZHANG Xiao-dong;TANG Wen-ming;JIANG Geng-ming(School of Information Science and Technology,Fudan University,Shanghai 200433,China)
出处
《计算机仿真》
北大核心
2022年第5期17-21,185,共6页
Computer Simulation
