Angle Estimation for Adaptive Linear Array using PCA-GS-ML Estimator

作者：Wu, Jianxin^*; Wang, Tong; Bao, Zheng

来源：IEEE Transactions on Aerospace and Electronic Systems, 2013, 49(1): 670-677.

DOI：10.1109/TAES.2013.6404132

• GENERALIZED MONOPULSE ESTIMATION
• MAXIMUM-LIKELIHOOD ANGLE
• RADAR
• SPACE
• TIME

The maximum likelihood (ML) angle estimator can yield optimal angle estimation performance. In the work presented here, a fast algorithm for solving the global optimal solution of the ML angle estimator based on principal component analysis (PCA) and grid search (GS) is developed. Utilizing the low-rank property of the mainbeam steering matrix, the log-likelihood function can be decomposed as a combination of the relevant quantities of basis vectors of the low-rank subspace. Thus, evaluation of the log-likelihood function can be realized in a lower dimensional space. Although GS is also required, the computational complexity can be greatly reduced, and the global optimal solution can be obtained.

• 出版日期2013-1
• 单位西安电子科技大学