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Chinese Journal of Space Science ›› 2015, Vol. 35 ›› Issue (6): 687-695.doi: 10.11728/cjss2015.06.687

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Analysis of the Chinese GEO Satellite Anomaly on 9 March 2012

TIAN Tian1, WU Yaoping1, CHANG Zheng2, LI Ming3, MA Liang1, WEI Yali1, ZHU Guoyang1   

  1. 1 Unit 61741, Beijing 100094;
    2 National Space Science Center, Chinese Academy of Sciences, Beijing 100190;
    3 China Xi’an Satellite Control Center, Xi’an 710043
  • Received:2014-12-19 Revised:2015-07-04 Online:2015-10-15 Published:2015-12-07

Abstract:

Based on the GOES-15, SDO, SOHO satellites and geomagnetic indices data, the Chinese GEO satellite anomaly on 9 March 2012 was studied. The space weather conditions at the time of the GEO-X satellite anomaly are being analyzed, and SEAES-GEO (Spacecraft Environmental Anomalies Expert System for Geosynchronous Orbit) method is used to calculate the internal charging hazard quotient, the single event effects hazard quotient and the surface charging hazard quotient. The hazard quotient was divided into three types with red-yellow-blue color coding which represents different hazard rating. Results showed that the hazard quotient for internal charging was less than 3 and the surface charging hazard quotient was about 0.0011, safely in the green at the time of the failure. The hazard quotient for single event effects reached 46.3, which was correlated to high energetic protons produced during solar flares, very danger in the red at the time of the failure. The results thus imply that the single event effect is quite probably the reason that caused the GEO-X satellite anomaly on 9 March 2012.

Key words: Satellite anomaly, Internal charging, Surface charging, Single event effects, Hazard quotient, Spacecraft Environmental Anomalies Expert System for GeosynchronousOrbit (SEAES-GEO)

CLC Number: