中国空间科学技术

中国空间科学技术 ›› 2022, Vol. 42 ›› Issue (5): 91-102.doi: 10.16708/j.cnki.1000-758X.2022.0070

• 论文 • 上一篇    下一篇

空间太阳能电站微波能量反向波束控制技术

董士伟，侯欣宾，王薪   

  1. 1 中国空间技术研究院西安分院 空间微波技术国家级重点实验室，西安710100
    2 中国空间技术研究院 钱学森空间技术实验室，北京100094
    3 重庆大学 电气工程学院，重庆400044
  • 出版日期:2022-09-09 发布日期:2022-09-09

Retro-directive microwave power beam steering technology for space solar power station

DONG Shiwei，HOU Xinbin，WANG Xin   

  1. 1 National Key Laboratory of Science and Technology on Space Microwave，China Academy of Space Technology
    （Xi′an），Xi′an 710100，China
    2 Qian Xuesen Laboratoey of Space Technology，China Academy of Space Technology，Beijing 100094，China
    3 School of Electrical Engineering，Chongqing University，Chongqing 400044，China
  • Published:2022-09-09 Online:2022-09-09

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摘要： 微波能量传输设计与验证是中国空间太阳能电站发展各阶段的核心工作，微波能量反向波束控制则是微波能量传输的关键环节。目前的反向波束控制研究都基于微波能量发射阵列具有理想型面的前提，没有考虑空间环境中微波能量发射阵列结构模块发生位置和姿态偏差的实际情况。结合中国空间太阳能电站发展的4个阶段任务，分析了结构模块姿位偏差对整流阵列处功率密度和波束指向误差带来的影响。在已经验证的软件化微波能量反向波束控制基础上，结合结构模块姿位偏差校正，提出了基于相位补偿的反向波束控制技术，并对校正效果进行了仿真分析。基于相位补偿的反向波束控制技术对微波能量发射阵列结构模块姿位偏差的影响具有显著的校正能力。文章可以为微波能量传输系统的设计和研制提供指导。

关键词: 空间太阳能电站, 微波能量传输, 反向波束控制, 功率密度, 指向误差

Abstract: Microwave power transmission（MPT）design and demonstration are key jobs in development of space solar power station（SSPS）in China，while retro-directive microwave power beam steering is a primary part of MPT.Research on retro-directive microwave power beam steering was conducted under the prerequisite that the power transmitting array was with an ideal profile.The position and attitude errors of structural modules had seldom been considered of the power transmitting array in space environment.With respect to the four-phased missions of SSPS development in China，the influence of position and attitude errors on power density at the rectifying array and beam steering error was investigated.After the software retro-directive microwave power beam steering was preliminarily demonstrated，software retro-directive beam steering based on phase compensation was proposed，aimed at correcting the position and attitude errors of array modules.The correction effect was simulated and analyzed.The proposed software retrodirective beam steering based on phase compensation has remarkable correction ability for the position and attitude errors of array modules.This article presents guidelines for MPT system design and assembly.

Key words: space solar power station, microwave power transmission, retro-directive beam steering, power density, pointing error