天线组阵频域合成方法最佳子带划分数分析

doi:10.3969/j.issn.1001-506X.2020.10.02

系统工程与电子技术 ›› 2020, Vol. 42 ›› Issue (10): 2156-2163.doi: 10.3969/j.issn.1001-506X.2020.10.02

天线组阵频域合成方法最佳子带划分数分析

焦义文(), 马宏(), 刘燕都(), 陈永强()

航天工程大学电子与光学工程系, 北京怀柔 101416

收稿日期:2020-02-05 出版日期:2020-09-21 发布日期:2020-09-19
作者简介:焦义文(1985-),男,讲师,博士,主要研究方向为航天测控通信系统。E-mail:jiaoyiwen1985@163.com|马宏(1976-),男,副教授,博士,主要研究方向为航天测控通信系统。E-mail:mahong_0108@163.com|刘燕都(1986-),男,工程师,博士研究生,主要研究方向为航天测控通信系统。E-mail:liuyandu1029@126.com|陈永强(1988-),男,工程师,硕士研究生,主要研究方向为航天测控通信系统。E-mail:whpnice@foxmail.com
基金资助:
北京市科技重大专项(Z181100002918004)

Analysis on the optimal sub-band partition number in frequency domain combining for antenna arraying

Yiwen JIAO(), Hong MA(), Yandu LIU(), Yongqiang CHEN()

Department of Electronic and Optical Engineering, Space Engineering University, Beijing 101416, China

Received:2020-02-05 Online:2020-09-21 Published:2020-09-19

摘要/Abstract

摘要：

为定量分析天线组阵宽带信号频域合成方法中最佳的子带划分数,首先,介绍了频域合成方法并构建了宽带信号合成系统模型;然后,分析了点频信号条件下的合成性能;最后,通过在频域进行积分扩展，得到不同子带划分数条件下的合成损失理论公式。仿真结果表明,子带划分数越多,频域合成方法合成性能越高,但硬件开销越大。以合成损失与硬件开销为评估指标,最佳子带划分数为128。

关键词: 天线组阵, 宽带信号, 频域合成, 残余时延, 子带划分, 合成损失

Abstract:

In order to analyze the optimal sub-band partition number in frequency domain beamforming method for wideband signals of antenna arraying quantitatively, firstly, a frequency domain beamforming method is described, and the system model of wideband signal combining is established. Then, the influence on the combining performance under the condition of tone signals is analyzed. Finally, through integral extension in the frequency domain, the combining loss formula under the condition of different sub-band partition number is obtained. Simulation results show that the higher the sub-band partition number is, the better the combining performance of the frequency domain beamforming is, as well as the hardware cost. Taking the combining loss and hardware cost as the evaluation indicators, the optimal sub-band partition number is 128.

Key words: antenna arraying, wideband signal, frequency domain combining, residual delay, sub-band partition, combining loss

中图分类号:

TN911

焦义文, 马宏, 刘燕都, 陈永强. 天线组阵频域合成方法最佳子带划分数分析[J]. 系统工程与电子技术, 2020, 42(10): 2156-2163.

Yiwen JIAO, Hong MA, Yandu LIU, Yongqiang CHEN. Analysis on the optimal sub-band partition number in frequency domain combining for antenna arraying[J]. Systems Engineering and Electronics, 2020, 42(10): 2156-2163.

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参数	设置值
K	64	128	256	512
R	44	88	176	352
N	2 816	5 632	11 264	22 528

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天线组阵频域合成方法最佳子带划分数分析

Analysis on the optimal sub-band partition number in frequency domain combining for antenna arraying

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