Signal Direction of Arrival Estimation Based High-order Cumulants and a Partially Calibrated Array
For the problem of obtaining high-resolution direction of arrival (DOA) in the case of the angularly dependent array uncertainties and non-Gaussian sources, in this paper, a new method of signal direction of arrival estimation based on high-order cumulants and a partially calibrated array (CPCA) is proposed. In this algorithm, the high-order cumulants of received signal is accounted, and the corresponding signal model is derived by characteristic of the gain-phase errors. Then, using the idea of ISM, the signal model is transformed in consideration of the number of uncalibrated and well-Calibrated elements, and the matrix transform is also obtained by all of gain-phase parameters which is product by Kronecker operation. Finally, the noise subspace is adjusted according to the order of elements of steering vector. This method adapts to arbitrary array, needs relatively small computational capacity and one dimension searching. The computer simulation results illustrated that the new method can eliminate gain-phase errors and color noise, and the system stability.
Feng Liu Jingqing Lv Shaoqian Li
National EW Laboratory,CETC No.29 Research Institute,610036 Chengdu, Sichuan P.R. China;University E CETC No.29 Research Institute,610036 Chengdu, Sichuan, P.R. China University Electronic Science and Technology of China,610054 Chengdu, Sichuan, P.R. China
国际会议
2006 International Conference on Communications,Circuits and Systems(第四届国际通信、电路与系统学术会议)
广西桂林
英文
293-297
2006-06-25（万方平台首次上网日期，不代表论文的发表时间）