利用模拟退火算法优化非均匀阵列天线测向性能

Performance Improvement of Estimation Direction-of-Arrival in Non-Uniform Linear Antenna Array by Simulated Annealing Algorithm

建立了优化非均匀线阵的数学模型，提出采用模拟退火算法优化非均匀线阵测向性能的新方法。该方法只需要一个入射方向准确已知的信号源来完成优化。优点是优化过程简单、稳定性较好，并且适用于任意形式的天线阵：大量的计算机模拟结果表明优化后阵列的测向性能有较大提高，从而验证了这种方法的有效性。

The mathematical model of optimizing non-uniform linear array is established. And a new arrangement method for the non-uniform linear array by simulated annealing algorithm is put forward. This method needs nothing except a signal whose DOA has been known exactly in its optimization process. Its＇ merits are that optimization process is simple and stabilization is good, and can be applied to any pattern of antenna array. Many computer simulation results indicate there is a great improvement on estimation DOA by optimized non-uniform linear antenna array, which has proved the validity of this method.