关键词: 凸优化, 半定松弛, 到达角

Abstract:

In this paper, a new semidefinite programming approach is devised for AOA source localization. The main idea is to include the noise components as parameters of interests, which increases the flexibility in the convex optimization formulation. The original nonconvex quadratic optimization problem of source position is converted first into an equivalent nonconvex semidefinite programming problem, and then into a convex optimization problem, thus resolving the convex optimization problem and serves as a good approximate of original difficult problem. The computer simulation results show that the semidefinite relaxation method can effectively solve the source localization problem

Key words: convex optimization, semidefinite relaxation, angle of arrival