The transmission link of CAPS navigation and communication system
文献类型：期刊论文
| 作者 | Cui JunXia1,2 ; Shi HuLi1,2; Chen JiBin3; Pei Jun1
|
| 刊名 | SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY
 |
| 出版日期 | 2009-03-01 |
| 卷号 | 52期号:3页码:402-411 |
| 关键词 | satellite navigation satellite communication transmission link link margin demodulation threshold CAPS |
| 英文摘要 | The Chinese Area Positioning System (CAPS) is based on communication satellites with integrated capability, which is different from the Global Positioning System (GPS), the International Maritime Satellite Organization (Inmarsat) and so on. CAPS works at C-band, and its navigation information is not directly generated from the satellite, but from the master control station on the ground and transmitted to users via the satellite. The slightly inclined geostationary-satellite orbit (SIGSO) satellites are adopted in CAPS. All of these increase the difficulty in the design of the system and terminals. In this paper, the authors study the CAPS configuration parameters of the navigation master control station, information transmission capability, and the selection of the antenna aperture of the communication center station, as well as the impact of satellite parameters on the whole communication system from the perspective of the transmission link budget. The conclusion of availability of the CAPS navigation system is achieved. The results show that the CAPS inbound communication system forms a new low-data-rate satellite communication system, which can accommodate mass communication terminals with the transmission rate of no more than 1 kbps for every terminal. The communication center station should be configured with a large-aperture antenna (about 10-15 m); spread spectrum communication technology should be used with the spreading gain as high as about 40 dB; reduction of the satellite transponder gain attenuation is beneficial to improving the signal-to-noise ratio of the system, with the attenuation value of 0 or 2 dB as the best choice. The fact that the CAPS navigation system has been checked and accepted by the experts and the operation is stable till now clarifies the rationality of the analysis results. The fact that a variety of experiments and applications of the satellite communication system designed according to the findings in this paper have been successfully carried out confirms the correctness of the study results. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000264106800013 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/7577]  |
| 专题 | 国家天文台_应用天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.China Telecommun Broadcast Satellite Co, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cui JunXia,Shi HuLi,Chen JiBin,et al. The transmission link of CAPS navigation and communication system[J]. SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY,2009,52(3):402-411. |
| APA | Cui JunXia,Shi HuLi,Chen JiBin,&Pei Jun.(2009).The transmission link of CAPS navigation and communication system.SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY,52(3),402-411. |
| MLA | Cui JunXia,et al."The transmission link of CAPS navigation and communication system".SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY 52.3(2009):402-411. |
入库方式： OAI收割
来源：国家天文台
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