【摘要】 在non-circular信号的情况下,提出了信源个数检测算法.通过使用non-circular信号椭圆协方差不为零的特点将可利用阵元个数加倍,并利用酉变换将快拍数加倍,提高了数据协方差矩阵的估计精度,在此基础上改进了信息论检测准则.仿真实验表明新算法具有收敛速度快、角度分辨力高和可检测信号个数多等优点.更多还原

【Abstract】 We present in this paper a new numberof-sources-detecting algorithm for non-circular sources.In the proposed method,due to the non-circularity characteristics of the sources,we can employ the conjugate measurements and unitary transformation in the covariance matrix,and as a result the sensors and snapshots are doubled.It is shown that the new method can handle more sources than the MDL,and that it has a better angular resolution.In addition,the rate of convergence of the proposed method is faster than that of conventional algorithms.更多还原