基于GPU的天线组阵信号时延补偿方法

doi:10.12305/j.issn.1001-506X.2023.08.12

Abstract

Abstract:

Aiming at the real-time synthesis requirements of wideband, high-speed, and parallel signals in the antenna array synthesis system, an antenna array time delay compensation method based on GPU is proposed. Firstly, the feasibility of typical integer time delay compensation methods on graphic processing unit (GPU) platform is analyzed, and an integer time delay compensation method based on data block overlap retention is designed. Secondly, the advantages and disadvantages of typical fractional time delay compensation methods are compared, and a frequency-domain fractional time delay compensation method suitable for GPU parallel acceleration is designed. Finally, the experimental verification of the antenna array time delay compensation method based on GPU is carried out. The experimental test results show that on the basis of ensuring the correctness of the time delay compensation, the time delay compensation method based on GPU is about 18 times faster than the traditional serial CPU time delay compensation method on the acceleration rate. The time delay compensation method based on GPU can realize the multi-antenna signal real-time synthesis.

Key words: time delay compensation, antenna array, graphic processing unit (GPU), parallel computing

CLC Number:

TN911

Feilong MAO, Yiwen JIAO, Hong MA, Jiujiang HAN, Zefu GAO, Chao LI, Dong LI. Time delay compensation method of antenna array signal based on GPU[J]. Systems Engineering and Electronics, 2023, 45(8): 2383-2394.

Figures/Tables 22

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型号	数量	CUDA核心数	GPU内存/GB
NVIDIA A100	1	6 912	80

型号	数量	主频/GHz	核心数
Intel(R) Xeon(R) 6246R	2	3.4	30

参数	数值大小
采样率	56e6
PCAL信号带宽	24e6
FFT点数	512
累加平均次数	100
步长因子	0.5
天线数	2
天线1初始时延(采样点)	2
参考天线初始时延采样点	0
迭代次数	30

对象	时长/ms	比重/%
GPU	174.45	55
CPU	140.55	45
总耗时	315.00	100

对象	时长/ms	比重/%
总耗时	174.450	100.00
MemcpyDtoD	13.856	7.94
MemcpyHtoD	79.823	45.76
MemcpyDtoH	2.048	1.17
Kernel	78.723	45.13

Time delay compensation method of antenna array signal based on GPU

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