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首页> 外文期刊>International Journal of Satellite Communications and Networking >A flexible LEO satellite modem with Ka-band RF frontend for a data relay satellite system
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A flexible LEO satellite modem with Ka-band RF frontend for a data relay satellite system

机译:具有Ka波段RF前端的灵活LEO卫星调制解调器,用于数据中继卫星系统

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摘要

From a geostationary Earth orbit (GEO) satellite's perspective, a low Earth orbit (LEO) satellite is visible on more than half of its orbit. Albeit the free-space loss of an inter-satellite link is much higher than the one of a direct ground link, considerable data rates and download volumes can be achieved. In this paper, we describe the system architecture of an integrated approach for a data relay satellite system and the development of LEO satellite and ground station modems. The approach allows serving several small and inexpensive LEO satellites at the same time both with low rate telemetry/telecommand links and with high rate download of sensor data.
机译:从对地静止地球轨道(GEO)卫星的角度来看,低地球轨道(LEO)卫星的一半以上可见。尽管卫星间链路的自由空间损耗比直接地面链路的自由空间损耗高得多,但可以实现可观的数据速率和下载量。在本文中,我们描述了一种用于数据中继卫星系统的集成方法的系统架构以及LEO卫星和地面站调制解调器的开发。该方法允许同时以低速率遥测/电报链路和高速率下载传感器数据为多个小型且廉价的LEO卫星提供服务。

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