摘要
基于四阶累积量,本文提出了一种爆炸式时空阵列扩展方法,该方法将阵列孔径按实际阵元数成几倍、几十倍增长.这种阵列扩展方法既可以应用于循环平稳信号源,也可以应用于非循环平稳信号源.由于阵列扩展的规则性,2-D DOA估计可以采用ESPRIT算法,从而无须谱峰搜索.但该方法随着信号源数的增加,其计算量也会随着增加.最后的实验仿真验证了这种阵列扩展的有效性.
In this paper,based on four-order cumulant,a new method of space-time array extension in a blast manner is proposed to extend several or several-ten times the aperture of an array as the real number of array element increases.The method is applied to signals with or without cyclostationarity.By means of regulationarity of array extension,ESPRIT algorithm can be adopted to estimate 2-D DOA of signals,and so spectrum peak searching can be avoided.But the amount of calculation increases as the number of signal increases.Simulations are presented demonstrating the capabilities of the array extension.
出处
《西南民族大学学报（自然科学版）》
CAS
2006年第6期1134-1138,共5页
Journal of Southwest Minzu University(Natural Science Edition)
作者简介
夏龄(1970-),男,康定民族师范高等专科学校副教授.
