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| Ground receiving principle and malfunction analysis of Beidou sounding system |
| Qin Hongcai, Xie Jiatong, Zuo Xinjie, Xu Chang, Bai Xin |
| Northwest Institute of Nuclear Technology,Xi'an 710024 |
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Abstract Based on a domestic BeiDou sounding system,this paper introduces the basic composition and working principe of the ground receiving antenna and receiver.By analyzing and diagnosing fault cases encountered during actual operation,common fault analysis methods are summarized.The results show that the faliure was mainly caused by damage to the low-noise amplifier,which led to ineffective amplification of sounding signals under low-elevation conditions and thus affected the completeness of data reception.During maintenance,the operational status of relevant modules was determined by observing changes in the software interface,and methods such as comparative testing and replacement of functionally similar components were adopted.These approaches allowed rapid fault localization even in the absence of dedicated testing instruments.This analysis provides a practical reference for fault diagnosis and maintenance of similar equipment in operational use.
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Received: 07 November 2024
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2026, Vol. 43 
