基于遗传算法的均匀子阵数字多波束形成研究

Study on DBF for Multi-Beam at Uniform Subarray Level Based on Genetic Algorithms

现代雷达系统一般采用子阵的形式减少通道数,均匀划分的子阵有利于减小微波网络的实现难度,但形成多波束时会出现栅瓣。为此提出一种基于遗传算法搜索权值,包括阵元权和通道权形成多波束,以降低栅瓣,改善多波束性能。仿真实验表明,该方法是有效可行的。

Modem radar systems usually adopt the form of subarray in order to reduce the number of channels. The performance of multi-beam is degraded due to the grating lobe which appears at the uniform subarray set which contribute to actualize the microwave net. A method based on genetic algorithms to search the weights of multi-beam at elements level and channel level is proposed for the purpose of reducing the grating lobe. The results turn out the validity of the method.