Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2014, Vol. 37 ›› Issue (2): 99-103.doi: 10.13190/j.jbupt.2014.02.021

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Land Mobile Satellite Channel Model for Antenna Pointing Inaccuracy

LIAO Xi1, LIU Nai-jin2, QIAN Jin-xi1, ZHAO Dan-feng1, WANG Yang1   

  1. 1. College of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, China;
    2. Department of Communications Satellite, China Academy of Space Technology, Beijing 100094, China
  • Received:2013-06-21 Online:2014-04-28 Published:2014-04-08

Abstract:

In order to solve the problems that the propagation parameters instability of land mobile satellite (LMS) channel caused by large volume, strong flexibility of the space-borne antenna for LMS system, a LMS channel model for antenna pointing inaccuracy is proposed from the reason of vibration of space-borne antenna. The fading statistical properties of complex time series and the influence of the first order of statistics characteristics within threshold of the vibration are presented. Simulations show that the vibration of antenna has no obvious effect on first-order statistics properties, but it has great influence on second-order. Within the threshold, the influence on the statistical properties of first order is negligibly small. Considering accurate synchronization, it has little influence on the bit error rate of LMS system.

Key words: vibration of space-borne antenna, land mobile satellite channel, Corazza channel model, satellite elevation, maximum Doppler-shift frequency

CLC Number: