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

系统工程与电子技术 ›› 2023, Vol. 45 ›› Issue (8): 2383-2394.doi: 10.12305/j.issn.1001-506X.2023.08.12

基于GPU的天线组阵信号时延补偿方法

毛飞龙¹, 焦义文¹, 马宏¹^,*, 韩久江², 高泽夫¹, 李超¹, 李冬¹

1. 航天工程大学电子与光学工程系, 北京 101400
2. 国防科技大学电子科学学院, 湖南长沙 410073

收稿日期:2021-10-04 出版日期:2023-07-25 发布日期:2023-08-03
通讯作者: 马宏
作者简介:毛飞龙(1997—), 男, 硕士研究生, 主要研究方向为测控通信、高性能计算
焦义文(1985—), 男, 副教授, 博士, 主要研究方向为深空测控、软件无线电
马宏(1976—), 男, 教授, 博士, 主要研究方向为航天测控通信系统、软件无线电技术
韩久江(1998—), 男, 硕士研究生, 主要研究方向为区块链、云计算、大数据安全
高泽夫(1999—), 男, 硕士研究生, 主要研究方向为软件无线电、深空测控
李超(1986—), 男, 博士研究生, 主要研究方向为软件无线电、航天测控
李冬(1996—), 女, 硕士研究生, 主要研究方向为测控通信、信号处理
基金资助:
北京市科技重大专项(Z181100002918004)

Time delay compensation method of antenna array signal based on GPU

Feilong MAO¹, Yiwen JIAO¹, Hong MA¹^,*, Jiujiang HAN², Zefu GAO¹, Chao LI¹, Dong LI¹

1. Department of Electronic and Optical Engineering, Space Engineering University, Beijing 101400, China
2. School of Electronic Science, National University of Defense Technology, Changsha 410073, China

Received:2021-10-04 Online:2023-07-25 Published:2023-08-03
Contact: Hong MA

摘要/Abstract

摘要：

针对天线组阵合成系统对于宽带、高速、并行信号的实时合成需求, 设计了基于图形处理器(graphic processing unit, GPU)的天线组阵信号时延补偿方法。首先, 分析了典型的整数时延补偿方法在GPU平台上实现的可行性, 设计了基于数据块重叠保留的整数时延补偿方法。然后, 对比了典型的小数时延补偿方法的优劣, 设计了适合于GPU并行加速的频域小数时延补偿方法。最后, 对基于GPU的天线组阵信号时延补偿方法进行了实验验证。多次实验测试结果表明, 在确保时延补偿正确性的基础上, 基于GPU的时延补偿方法相比传统串行CPU时延补偿方法加速比提升了约18倍, 采用基于GPU的时延补偿方法可实现对多天线信号的实时合成。

关键词: 时延补偿, 天线组阵, 图形处理器, 并行计算

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

中图分类号:

TN911

毛飞龙, 焦义文, 马宏, 韩久江, 高泽夫, 李超, 李冬. 基于GPU的天线组阵信号时延补偿方法[J]. 系统工程与电子技术, 2023, 45(8): 2383-2394.

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.

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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

基于GPU的天线组阵信号时延补偿方法

Time delay compensation method of antenna array signal based on GPU

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