一种基于半定松弛规划的到达角定位方法

针对基于到达角的目标辐射源定位系统，提出了一种基于半定松弛规划的定位方程求解方法。主要思想是将噪声元素添加为有用参数，以增加定位方程凸优化的灵活性。先将目标定位的初始非凸二次优化问题转化为非凸半定优化问题，然后松弛到凸优化问题，再对凸优化问题进行求解作为初始复杂问题的近似解，从而得出目标位置估计。文中采用计算机仿真结果证明了这种解法的有效性。

A Semi Definite Relaxation Programming Approach to AOA Source Localization

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