运动平台分布式功率合成效能分析

doi:10.11959/j.issn.1000-436x.2023219

通信学报 ›› 2023, Vol. 44 ›› Issue (11): 143-150.doi: 10.11959/j.issn.1000-436x.2023219

• 学术论文 • 上一篇

运动平台分布式功率合成效能分析

郭文博¹^,², 杜嘉鑫¹^,², 杨健²^,³, 严牧², 赵宏志¹^,², 邵士海¹^,²

¹ 电子科技大学通信抗干扰全国重点实验室，四川成都 611731
² 电磁空间认知与智能控制技术实验室，北京 100191
³ 北京理工大学网络空间安全学院，北京 100081

修回日期:2023-11-01 出版日期:2023-11-01 发布日期:2023-11-01
作者简介:郭文博（1994− ），男，四川南充人，博士，电子科技大学在站博士后，主要研究方向为干扰抑制、物理层安全、分布式协同、频谱智能等
杜嘉鑫（1997− ），男，四川乐山人，电子科技大学博士生，主要研究方向为分布式协同波束成形、干扰抑制等
杨健（1982− ），男，安徽阜阳人，博士，电磁空间认知与智能控制技术实验室研究员，主要研究方向为电磁空间认知、群体频谱智能等
严牧（1991− ），男，重庆人，博士，电磁空间认知与智能控制技术实验室助理研究员，主要研究方向为电磁空间认知、群体频谱智能等
赵宏志（1978− ），男，河北石家庄人，博士，电子科技大学教授、博士生导师，主要研究方向为全双工通信、通信抗干扰技术等
邵士海（1980− ），男，辽宁抚顺人，博士，电子科技大学教授、博士生导师，主要研究方向为机器学习与人工智能、抗干扰与安全通信等
基金资助:
国家自然科学基金资助项目(U19B2014);国家自然科学基金资助项目(61601071);国家自然科学基金资助项目(61671091)

Efficiency analysis of distributed power combining for mobile platform

Wenbo GUO¹^,², Jiaxin DU¹^,², Jian YANG²^,³, Mu YAN², Hongzhi ZHAO¹^,², Shihai SHAO¹^,²

¹ Nation Key Laboratory of Wireless Communications, University of Electronic Science and Technology of China, Chengdu 611731, China
² Laboratory of Electromagnetic Space Cognition and Intelligent Control, Beijing 100191, China
³ School of Cyberspace Science and Technology, Beijing Institute of Technology, Beijing 100081, China

Revised:2023-11-01 Online:2023-11-01 Published:2023-11-01
Supported by:
The National Natural Science Foundation of China(U19B2014);The National Natural Science Foundation of China(61601071);The National Natural Science Foundation of China(61671091)

摘要/Abstract

摘要：

针对运动平台的位置摄动问题，分析了位置摄动对分布式功率合成效能影响，建立了存在位置摄动的分布式功率合成模型，推导了平均远场波束图、互补累积分布函数表达式以及 3 dB 波束宽度近似表达式。理论分析和数值仿真表明，位置摄动加剧会导致分布式功率合成的平均远场波束图、峰值功率、3 dB波束宽度和互补累积分布函数不断恶化。当位置摄动达到信号波长的 9%时，运动平台进行分布式功率合成后的信号峰值功率下降到其理论上限的90%。

关键词: 分布式功率合成, 运动平台, 虚拟天线阵列, 位置摄动

Abstract:

Aiming at the position perturbation of mobile platform, the impact of position perturbation was analyzed on distributed power combining efficiency.The model of distributed power combining with position perturbation was established, and the average far-field beampattern, complementary cumulative distribution function (CCDF) expressions and the approximate expression of 3 dB beamwidth were derived.The results show that intensified position perturbation can lead to continuous deterioration of the average far-field beampattern, peak power, 3 dB beamwidth, and CCDF of distributed power combining.When the position perturbation reaches 9% of the signal wavelength, the signal peak power of the mobile platform after distributed power combining decreases to 90% of its theoretical upper limit.

Key words: distributed power combining, mobile platform, virtual antenna array, position perturbation

中图分类号:

TN92

郭文博, 杜嘉鑫, 杨健, 严牧, 赵宏志, 邵士海. 运动平台分布式功率合成效能分析[J]. 通信学报, 2023, 44(11): 143-150.

Wenbo GUO, Jiaxin DU, Jian YANG, Mu YAN, Hongzhi ZHAO, Shihai SHAO. Efficiency analysis of distributed power combining for mobile platform[J]. Journal on Communications, 2023, 44(11): 143-150.

图/表 6

图1

表1

仿真参数"

参数	参数值
工作频率 f /GHz	1
信号波长λ/m	0.3
虚拟天线阵列目标方向 $(ϕ_{0}, θ_{0})$	(90°,90°)
归一化位置摄动 $\frac{D}{λ}$	0～0.3
运动平台规模N	[8,32,128]
运动平台分布范围L	[8λ,32λ,128λ]

表1

图2

图3

图4

图5

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运动平台分布式功率合成效能分析

Efficiency analysis of distributed power combining for mobile platform

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