| IGSO在卫星移动通信中的应用研究 |
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| 引用本文： | 张更新,郦苏丹,甘仲民.IGSO在卫星移动通信中的应用研究[J].通信学报,2006,27(8):148-154. |
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| 作者姓名： | 张更新 郦苏丹 甘仲民 |
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| 作者单位： | 1. 解放军理工大学,通信工程学院,江苏,南京,210007
2. 国防科技大学,计算机学院,湖南,长沙,410073 |
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| 基金项目： | 国家自然科学基金;教育部留学回国人员科研启动基金 |
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| 摘 要： | 研究利用IGSO星座提供卫星移动通信业务所涉及到的星座覆盖性能、多普勒频移及业务支持能力等问题。研究表明,采用2颗或3颗IGSO卫星构成的星座能够对我国区域提供较好的覆盖性能(单星和多星覆盖率及平均通信仰角),而引入的多普勒频移并不大。链路计算结果表明,采用IGSO卫星能够有效解决GEO卫星在高纬度区域的低仰角问题,并能用比较小的IGSO卫星来达到非常大的GEO卫星才能实现的性能。因此,采用IGSO的区域卫星移动通信系统具有较好的技术可行性。
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| 关 键 词： | 卫星通信 卫星移动通信 多普勒频移 卫星天线口径 衰落余量 |
| 文章编号： | 1000-436X（2006）08-0148-07 |
| 收稿时间： | 2005-12-15 |
| 修稿时间： | 2006-06-15 |
Study on the application of IGSO into mobile satellite communication |
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| ZHANG Geng-xin,LI Su-dan,GAN Zhong-min.Study on the application of IGSO into mobile satellite communication[J].Journal on Communications,2006,27(8):148-154. |
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| Authors: | ZHANG Geng-xin LI Su-dan GAN Zhong-min |
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| Affiliation: | 1. Institute of Communication Engineering, PLA University of Science and Technology, Nanjing 210007, China; 2. School of Computer, National University of Defense Technology, Changsha 410073, China |
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| Abstract: | The related coverage performance,Doppler shift and service-supporting capability of the IGSO constellation was studied for the given area.The results show that,the constellation,which consists of two or three IGSO satellites,can achieve good coverage characteristics(the percent of time of one and more satellites coverage and average elevation an-gle)to the Chinese and nearby area with small Doppler shift.The link budget shows that,adopting IGSO can effectively solve the low elevation angle problem faced by GEO satellite,and similar performance,which can only be implemented by a very big GEO satellite,can be achieved by two or three relatively small IGSO satellites.So the solution of adopting IGSO to provide mobile satellite communication system is technically feasible. |
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| Keywords: | IGSO |
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