计算机科学 ›› 2021, Vol. 48 ›› Issue (4): 282-287.doi: 10.11896/jsjkx.200300029
王思秀1, 郭文强1, 汪晓洁1,2, 张传朋3
WANG Si-xiu1, GUO Wen-qiang1, WANG Xiao-jie1,2, ZHANG Chuan-peng3
摘要: 针对在宽带短脉冲情况下频域MUSIC波束形成过程中噪声子空间估计不稳定的问题,提出了一种基于时空联合估计噪声子空间的MUSIC波束形成方法。该方法首先对线列阵接收数据构造时域复解析数据;然后根据增广数据构造方法和空间滑动的方法,在时域数据长度更短的情况下,稳定实现噪声子空间估计;最后根据估计出的噪声子空间含有的正交特性,通过单位矩阵与噪声特征向量相乘来得到相应波束。数值仿真和实测数据处理结果表明,相比频域MUSIC波束形成方法,该方法减少了稳定获取噪声子空间所需的快拍数,具有较好的稳定性和检测性能,提高了MUSIC波束形成在实际应用中的鲁棒性。
中图分类号:
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