CAJ | 학술논문

当干扰信号强度不小于期望信号时,常规恒模算法(CMA)会错误跟踪到干扰信号;期望信号导向矢量线性约束恒模算法(LSCCMA)通过对期望信号来波方向约束,可正确跟踪到期望信号,但是算法在干扰信号来波方向上不能形成明显的零陷.为此,提出了基于干扰约束的恒模算法(LIC-CMBTA).理论分析和仿真结果证明,该算法不仅可以正确跟踪到期望信号,并且可实现在多个强干扰信号来波方向上形成深度可调的干扰零陷,从而提高了常规恒模算法波束跟踪的稳健性.
당간우신호강도불소우기망신호시,상규항모산법(CMA)회착오근종도간우신호;기망신호도향시량선성약속항모산법(LSCCMA)통과대기망신호래파방향약속,가정학근종도기망신호,단시산법재간우신호래파방향상불능형성명현적령함.위차,제출료기우간우약속적항모산법(LIC-CMBTA).이론분석화방진결과증명,해산법불부가이정학근종도기망신호,병차가실현재다개강간우신호래파방향상형성심도가조적간우령함,종이제고료상규항모산법파속근종적은건성.
@@@@The traditional constant modulus algorithm (CMA)fails to track the desired signal,when it companies with stronger interference signals. Though the linear signals constrained constant modulus algorithm (LSCCMA) can solve the problem when knowing the accurate direction of arrival (DOA)of the desired signal,it cannot form an obvious interference null at the DOA of interference signals. Therefore,a linear interference constant modu-lus beam tracking algorithm (LICCMBTA)is presented in this paper based on above mentioned problems. Theo-retical analysis and simulation results indicate that the LICCMBTA can not only track the desired signal correct-ly,but also forms deep null at the DOA of interference signals simultaneously according to the adjustable null factors. The LICCMBTA improves the robustness of the traditional CMA.