• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2020, Vol. 56 ›› Issue (5): 123-132.doi: 10.3901/JME.2020.05.123

Previous Articles     Next Articles

Design Method and Research of Spherical Radar Calibration Mechanism Based on Positive Pyramid Expandable Unit

LI Duanling1,2, DONG Kaijie1,2, LIU Lijie1,2, WANG Xingze3, ZHANG Wencai4, GE Zhenghao4   

  1. 1. College of Automation, Beijing University of Posts and Telecommunications, Beijing 100876;
    2. Beijing Post Intelligent Equipment Engineering Technology Research Center, Beijing 100096;
    3. Beijing Space Vehicle General Design Department, Beijing 100094;
    4. College of Mechanical & Electrical Engineering, Shaanxi University of Science & Technology, Xi'an 712000
  • Received:2019-03-25 Revised:2019-10-11 Online:2020-03-05 Published:2020-04-23

Abstract: Ground-based radar monitoring is one of the most effective monitoring methods for space debris. In order to ensure the accuracy of ground radar measurement, it needs to be identified and calibrated. The calibration device is usually a constant spherical shape. To meet the requirement of envelope at time of launch, an expandable spherical radar calibration mechanism with a small folding ratio is needed. A kind of angled rod regular pyramid unit is proposed by analyzing the angled scissor unit. Through the study of spatial polyhedron, the construction method of spherical polyhedron is analyzed. According to the constructed the spherical configuration, a spherical scaling mechanism is combined by modular positive pyramid expandable units. This research summarizes a set of theoretical methods for designing spherical scaling mechanisms, and verifies the feasibility of the method through the prototype. It will lay a good foundation for the development of China's first radar calibration satellite and will have a good application prospect.

Key words: calibration mechanism, scissor unit, expandable unit, spherical expansion mechanism

CLC Number: