多模双频段车载遥感地面站的设计及应用

Design and Application for Multi-mode and Dual-band Vehicle-borne Remote Sensing Ground Station

摘要:

随着对地观测技术的快速发展，遥感卫星资源也越来越丰富，为充分发挥地面接收系统的效能，需要满足一站多能，天线既能接收低轨遥感卫星的数据，又能接收高轨遥感卫星的数据，满足多个频段的接收需求。信道配置需要满足不同频段、不同解调方式、不同编译码的卫星数据接收需求。针对不同模式的卫星接收进行了星地链路的分析和计算，在此基础上，对系统组成及工作原理进行了介绍，并且对卫星的数据接收流程进行了设计；同时对系统的关键点高码速率解调译码器和光传输进行了详细的设计，最后经实际工程应用验证了设计情况，满足了工程的使用要求。

Abstract:

With the rapid development of earth observation technology, remote sensing satellite resources are becoming more and more abundant. In order to full play to the effectiveness of the ground receiving system, it is necessary to meet the multi-function of one station. The antenna can receive data from both low-orbit remote sensing satellites and high-orbit remote sensing satellites, and meet the receive needs of multiple bands. Channel configuration needs to meet the satellite data receiving requirements of different frequency bands, different demodulation modes and different coding and decoding. The satellite-to-ground link analysis and calculation are carried out for different modes of satellite, On this basis, the system composition and working principle are introduced, and the data receiving process of satellite is designed. At the same time, the key points of the system, single-high code rate demodulation decoder and optical transmission are analyzed in detail. Finally, the design has been verified by practical engineering application, which meets the application requirements of the project