| 卫星导航系统链路预算方法研究 |
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| 引用本文： | 张春海,李洪涛,赵文军,赵晓东.卫星导航系统链路预算方法研究[J].全球定位系统,2013(6):62-67. |
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| 作者姓名： | 张春海 李洪涛 赵文军 赵晓东 |
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| 作者单位： | 北京卫星导航中心,北京100094 |
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| 摘 要： | 卫星导航系统中，为了保证卫星发射信号到达地面的功率基本相等，卫星发射天线采用阵列天线，天线增益方向图设计为“马鞍”形，使得卫星导航系统的最大、最小链路预算方法不同于传统的卫星通信系统。结合工程实际，给出一种综合考虑卫星发射天线增益、自由空间衰减、大气衰减、极化失配损耗等因素的卫星导航系统最大、最小链路计算方法，对我国北斗全球卫星导航系统载荷和链路设计具有一定的参考价值。
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| 关 键 词： | 卫星导航系统 有效全向辐射功率 最大链路预算 最小链路预算 |
The Study of GNSS System Link Budget Method |
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| ZHANG Chunhai,LI Hongtao,ZHAO Wenjun,ZHAO Xiaodong.The Study of GNSS System Link Budget Method[J].Gnss World of China,2013(6):62-67. |
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| Authors: | ZHANG Chunhai LI Hongtao ZHAO Wenjun ZHAO Xiaodong |
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| Institution: | ( Beijing Satellite Navigation Center, Beijing 100094, China) |
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| Abstract: | The gain pattern of transmitting antenna of navigation satellite was designed to be saddle shape to keep the signal power being equal at the surface of the earth ,So the link budget method of GNSS system is different with the traditional satellite communication systems .A detail method ,which considering the antenna gain ,free space loss ,atmosphere attenuation and mismatch loss ,is introduced in this paper .The method can be referred to the design of satellite payload and link budget of COMPASS system . |
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| Keywords: | Satellite navigation system EIRP maximum link budget minimum Link budget |
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