北斗卫星导航频率保护现状和对策.pdfVIP

52 3 Vol. 52 No. 3 2012 3 Telecommunication Engineering Mar. 2012 : 1001- 893X( 2012) 03- 0418- 05 北斗卫星导航频率保护现状及对策 温日红, 申杰敏, 葛 侠, 原 亮 ( , 100094) : 对卫星导航信号易受干扰的原因及其对系统正常运行产生的影响进行了分析, 并 绍了国 际电联对卫星导航系统频率的划分和目前各主要系统对频率资源的使用情况通过对国际卫星导 航系统委员会( ICG) , 尤其是美国卫星导航频率保护方法的深入分析, 结合对我国 北斗 系统在运行 中发现的几个干扰案例的原因分析, 指出了我国卫星导航系统频率保护所面临的严峻形势和主要问 题, 并根据我国的现实情况, 探讨了 北斗卫星导航系统保护对策, 为今后 北斗卫星导航频率保护 政策的制定提供了有益参考 : 全球卫星导航系统; 卫星无线电导航业务; 北斗 系统; 频谱; 干扰; 频率保护 :TN967 : A doi: 10. 3969/ j. issn. 1001- 893 . 2012. 03. 034 Current Situation of and Countermeasure Suggestions for Protection of Beidou System Navigation Frequency WEN Rihong , SHEN J iemin, GE X ia, YUAN Liang ( Beijing Global Information Center of Application and E ploitation, Beijing 100094, China) Abstract :This paper analyses the reason why the satellite navigation signals are vulnerable to the interference, and the influence of the harmful interference on the radio- navigation satellite system, introduces the frequency allocations to the radio- navigation satellite service and its utilization status. Through analysing the frequency spectrum protection measures taken by the ICG( International Committee of Global Navigation Satellite Systems) , especially the USA, and the reason for the interference to the Beidou system, the main issues encountered by Beidou radio- navigation satellite system are pointed out. Finally, according to China!s situation, some sugges tions are given as a reference to the protection policy in the future. Key words:global navigation satellite system;RNSS;Beidou system;frequency spectrum;interference;frequency protection