基于遗传算法的相位调制波形智能优化

doi:10.12305/j.issn.1001-506X.2022.03.02

Abstract

Abstract:

With the improvement of intelligence, the transmitting signal of radar becomes more complex and changeable. In order to effectively deal with complex and unknown threat signals, it is necessary to enhance the intelligent countermeasure capability of the countermeasure system. An intelligent optimization method of countermeasure waveform based on intelligent optimization algorithm is proposed. And the intelligent optimization of phase modulation waveform based on genetic algorithm is studied through simulation experiments. The experimental results under different optimization parameters, different implementation conditions, different radar signals and signal changes show that the genetic algorithm can optimize the waveform under different conditions with less iteration times and short running time, and realize the improvement of the countermeasures performance. The feasibility of this method is preliminarily proved.

Key words: waveform optimization, intelligent optimization, phase-modulation, genetic algorithm

CLC Number:

TN97

Jianwei SUN, Chao WANG, Qingzhan SHI, Wenbo REN, Zekun YAO, Naichang YUAN. Intelligent optimization of phase-modulation waveform based on genetic algorithm[J]. Systems Engineering and Electronics, 2022, 44(3): 722-729.

Figures/Tables 12

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References 33

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方法	目标函数/dB	目标函数计算次数	运行时间/s
穷举法	4.90	191	1.82
遗传算法	4.90	135	1.48

方法	目标函数/dB	目标函数计算次数	运行时间/s
穷举法	6.23	4 009	38.67
遗传算法	6.16	435	4.35

方法	目标函数/dB	目标函数计算次数	运行时间/s
穷举法	7.48	28 063	295.01
遗传算法	7.25	409	4.50

方法	目标函数/dB	目标函数计算次数	运行时间/s
穷举法	8.77	28 063	298.84
遗传算法	8.63	325	3.99

方法	参数名称	信号
方法	参数名称	1	2	3	4	5
穷举法	码元宽度/μs	1.50	2.67	0.58	0.50	0.53
	采样时长/μs	4.5	8.0	1.5	8.0	1.5
	转发次数	3	2	4	2	6
	目标函数/dB	7.48	6.42	2.57	1.58	4.66
	目标函数计算次数	28 063	28 063	28 063	28 063	28 063
	运行时间/s	297.99	734.11	292.18	1 363.22	292.15
遗传算法	最优初值/dB	4.77	3.52	-0.57	-3.07	1.44
	优化结果最小值/dB	6.89	5.86	2.35	-2.52	3.19
	优化结果最大值/dB	7.48	6.42	2.57	-0.44	4.66
	平均优化结果/dB	7.25	6.30	2.53	-1.55	4.07
	平均目标函数计算次数	409	470	367	316	438
	平均用时/s	4.56	12.89	3.99	16.66	4.90

Intelligent optimization of phase-modulation waveform based on genetic algorithm

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