| 变速率与空间复用相结合的遥感数传技术 |
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| 引用本文： | 丁丹,姜明勇.变速率与空间复用相结合的遥感数传技术[J].四川兵工学报,2017(3):120-124. |
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| 作者姓名： | 丁丹 姜明勇 |
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| 作者单位： | 装备学院光电装备系,北京,101416 |
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| 基金项目： | 国家高技术研究发展计划(“863”)(2015AA7026085) |
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| 摘 要： | 为进一步提高遥感卫星数据传输效率,在现有单用户变速率传输方法的基础上,提出变速率与空间复用相结合的遥感数传技术,通过“最佳终端组”的选择和自适应调制编码方式的设定,实现遥感卫星同时对多个地面终端的并发数据传输,从而提升遥感卫星过境窗口内的数据传输容量;分析与仿真结果显示:结合空间复用技术后,在卫星中心角7.5 ～5.5度区间内,多用户变速率传输方式的容量较现有单用户变速率方式提高了约60％.
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| 关 键 词： | 自适应调制编码 空间复用 数据传输 遥感卫星 |
Remote Sensing Data Transmission Combining Variable Rate and Spatial Multiplexing |
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| Authors: | DING Dan JIANG Ming-yong |
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| Abstract: | In order to further increase the efficiency of remote sensing data transmission,based on single user variable rate transmission,a remote sensing data transmission technique combining variable rate and spatial multiplexing was proposed.Through " best terminal combination " choosing and Adaptive Modulation and Coding (ACM) setting,concurrent data transmission from a remote sensing satellite to several ground terminals was realized,thus improving the overall transmission capacity during the transit window.Analysis and simulation result shows that:by combining spatial multiplexing,the capacity of multi-user variable rate data transmission during 7.5 ～ 5.5 degree central angle intervalis is about 60％ higher than the existing single user variable rate data transmission. |
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| Keywords: | Adaptive Modulation and Coding (ACM) spatial multiplexing data transmission remote sensing satellite |
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