基于交替投影算法的宽带确定性最大似然测向  

Alternating projection algorithm-based wide-band deterministic maximum likelihood direction finding

作　　者：张朝柱[1] 赵春晖[1] 李刚 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2005年第4期540-543,共4页Journal of Harbin Engineering University

基　　金：全国优秀博士学位论文作者专项基金资助项目(200037);高等学校优秀青年教师教学科研奖励计划基金资助项目(2001-226)

摘　　要：宽带测向是通信与信号处理研究领域中的重要课题,在诸多领域都有重要应用.在高斯噪声和确定性信号假定下,文中推导出宽带确定性最大似然测向算法的代价函数,然后应用交替投影算法进行优化,即可得到波达方向估计值.与相干信号子空间方法相比,该算法不需要对波达方向进行预估计,因此就避免了预估计误差对最终估计结果的影响.把该算法应用到均匀线阵上,仿真实验结果证明了该算法的有效性,在宽带测向方面具有很好的应用前景.The wide-band direction finding is one of the key projects in communication and signal processing. It has important applications in many fields. This paper derives the cost function of wide-band deterministic maximum likelihood direction finding algorithm under the assumption of Gaussian noise and deterministic source, and then the function is optimized by alternating projection algorithm. The direction of arrival is estimated without preprocessing of array data and so the algorithm eliminates the effect of pre-estimate on the final estimation result. The algorithm is applied to uniform linear array and extensive simulation results prove the effectiveness of the algorithm. It has a broad application in wide-band direction finding.

关 键 词：宽带测向 确定性最大似然 交替投影算法 

分 类 号：TN911.6[电子电信—通信与信息系统]