宽频段相干信号多维参数联合估计算法  

Multi-parameter estimation of coherent signals over wide frequency band

作　　者：姜新迎[1] 杜刚[1] 冯有前[1,2] 

机构地区：[1]空军工程大学导弹学院,陕西三原713800 [2]空军工程大学理学院,陕西西安710051

出　　处：《系统工程与电子技术》2009年第6期1341-1345,共5页Systems Engineering and Electronics

摘　　要：基于非均匀的L型阵列,提出了一种宽频段相干信号频率、二维到达角和极化参数联合估计的算法———JTSS算法。该算法能精确地估计具有相同数字频率的相干信号的多维参数,无需多维谱峰搜索,具有计算量小,参数自动配对的优点。另外,在JTSS算法的基础上,利用阵列的分维特点进一步处理,成功地实现了具有频率兼并现象的宽频段相干信号的多维参数估计。该算法能够并行实现以进一步增强其实时性。计算机仿真结果验证了算法的有效性。Based on nonuniform L-shaped array, the paper presents a new method, JTSS algorithm, for the joint estimation of frequency, 2-D arrival angles and polarization of coherent signals over a wide frequency band. The algorithm can precisely estimate the multidimensional parameters of coherent signals with same digital fre- quency. Getting rid of the costly multidimensional spectrum peak search, it has smaller computational load with parameters paired automatically. In addition, based on the JTSS algorithm and the characteristic of the L- shaped array, the multidimensional parameter estimation of coherent signals with the same frequency is realized successfully by a separable method. It may be implemented in parallel way for real-time processing. Computer simulation confirms its effectiveness.

关 键 词：宽频段 相干源 极化 频率 波达方向 

分 类 号：TN911.7[电子电信—通信与信息系统]