基于空间谱图的跳频脉冲方向估计  

Direction Finding of Frequency-hopping Pulses Based on Spatial Spectrogram

作　　者：杨建波[1] 王永明[2] 刘鹏[1] 李长龙[3] 

机构地区：[1]空军航空大学 [2]国防科技大学电子科学与工程学院 [3]中国人民解放军94865部队

出　　处：《无线电工程》2010年第5期10-12,共3页Radio Engineering

摘　　要：提出一种基于空间谱图的跳频脉冲方向估计算法。通过计算各阵元数据的自谱图和互谱图构造时频域阵列模型,在时频面上的跳频脉冲能量聚集区域选择时频点构造空间时频分布矩阵,并采用Toeplitz对角化进行修正,最后运用MUSIC方法估计方向。该方法具有计算高效、可以去相干等优点。仿真结果验证了该方法的有效性。A Direction finding method based on spatial spectrogram is proposed for frequency-hopping pulses.The array model is constructed in time-frequency domain by computing the auto-and cross-spectrogram of the output of sensors.By choosing the time-frequency points residing on different regions of high power concentration,the spatial time-frequency distribution matrixes are formed and modified by Toeplitz diagonalization.The direction parameters are then estimated based on the MUSIC.The proposed method can deal with coherent signals with high computation efficiency.The simulation results show the efficiency of the method.

关 键 词：阵列处理 波达方向 空间时频分布 跳频 

分 类 号：TN911.7[电子电信—通信与信息系统]