| 一种LEO-S频段星地链路传输体制研究 |
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| 引用本文： | 李军峰,刘进.一种LEO-S频段星地链路传输体制研究[J].现代导航,2017,8(2):122-126. |
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| 作者姓名： | 李军峰 刘进 |
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| 作者单位： | 中国电子科技集团公司第二十研究所 71006 8.西安 |
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| 摘 要： | 由于低轨卫星系统(LEO)具有传输时延短、传输损耗低等优点，对于实现宽带业务、终端的小型化非常有利；另外，S 频段抗雨衰能力强，天线尺寸小造价低，使其很适合卫星移动电话、区域内多用户间数据等业务通信场合。本文针对目前低轨卫星通信需求提出了一种 LEO_S 频段星地链路传输体制，结合用户数量及传输速率要求，对上下行链路的传输体制进行了研究，计算了上下行链路的余量，并有针对性地提出了星地链路抗干扰措施。
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| 关 键 词： | 传输时延 抗雨衰 传输体制 抗干扰 |
Research on Transmission Scheme for LEO S-Band Satellite-Ground Links |
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| Authors: | LI Junfeng LIU Jin |
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| Abstract: | Based on the low transmission delay and transmission loss advantage of the LEO satellite communication systems and high resisting rain loss ability in S-band satellite communications, a transmission scheme for LEO S-band satellite-ground links is proposed in this paper. Under the specific number of users and transmission rate conditions, uplink and downlink transmission scheme and link margin evaluation of the LEO S-band satellite-ground links has been studied, and based on which anti-interference measures for satellite-ground links is proposed accordingly. |
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