遗传算法在天线阵自适应算法中的应用
APPLYING GENETIC ALGORITHM TO ADAPTIVE ARRAY
-
摘要: 本文采用一种新的基于遗传算法的天线阵列的自适应算法。根据实际的硬件限制,不改变阵列的幅度加权,而通过遗传算法对相位加权作全局优化。为减小对天线方向图的破坏,并希望在干扰源来波方向实时置零,因而采用只优化搜索数字移相器的最后几位。计算机模拟结果证实了这种方法的有效性。
-
关键词:
- 遗传算法; 自适应天线阵; 和差方向图
Abstract: In this paper, a new approach based on genetic algorithm (GA) is applied to adaptive array, in according to the limitation of hardware, the amplitude weights are not changed, but the phase weights are optimized globally with genetic algorithm. For reducing the perturbations to the far field pattern and placing multiple deep nulls real-time in the directions of interference, a genetic algorithm adjusts some of the least significant bits of the beam steering phase shifters. Simulation results confirm the theoretical work. -
Steyskal H. Methods for null control and their effects on radiation pattern. IEEE Trans. On AP,1986, AP-34(3): 163-166.[2]Monzingo R A, Miller T W. Introduction to Adaptive Antennas. New York: Wiley, 1980, Chapter.2.［3］Haupt R L. Adaptive nulling in monopulse antenna. IEEE Trans.on AP, 1988, AP-36(2): 202-208.[3]刘勇等.非数值并行算法--遗传算法.科学出版社,1995年,第二章[4]Haupt R L. Phase-only adaptive nulling with a genetic algorithm. IEEE Trans. On AP, 1997,AP-45(6): 1009-1015.[5]Deford J F, Gandhi O P, Phase-only synthesis of minimum peak sidelobe patterns for linear and planar arrays. IEEE Trans. On AP, 1988, AP-36(2): 191-201.[6]Shore R A. A proof of the odd-symmetry of the phases for minimum weight peturbation phaseonly null synthesis. IEEE Trans. On AP, 1984, AP-32(5): 528-530.[7]汪茂光.阵列天线分析与综合.成都:电子科技大学出版社,1989年,第二章.[8]Johnson S M, Yahya Rahmat-Samii. Genetic algorithms in engineering electromagnetics. IEEE AP magzine, 1997, APM-39(4): 7-24. -
计量
- 文章访问数: 1971
- HTML全文浏览量: 57
- PDF下载量: 435
- 被引次数: 0
下载:
