Dove卫星高速数传技术分析  

On High Speed Data Transmission Technologies of Dove Satellites

作　　者：李于衡 王学梅 孙海忠 马也 LI Yuheng;WANG Xuemei;SUN Haizhong;MA Ye(Beijing Space Wisdom Technology Co.Ltd,Beijing 100095,China;Beijing Space Information Relay and Transmission Technology Center,Beijing 100094,China;China Satellite Lanuch&Tracking Control General,Beijing 100120,China;Sanya Zhongke Institute of Remote Sensing,Sanya 572029,China)

机构地区：[1]北京宇航智科科技有限公司,北京100185 [2]北京空间信息中继传输技术研究中心,北京100094 [3]中国卫星发射测控系统部,北京100011 [4]三亚中科遥感研究所,海南三亚572029

出　　处：《无线电通信技术》2021年第1期104-109,共6页Radio Communications Technology

基　　金：海南省重大科技计划项目(ZDKJ2017009)。

摘　　要：随着遥感卫星对地观测分辨率的提高,数据下传成为制约瓶颈,解决方法除了增加接收弧段和数据压缩比,提高传输速率是最有效的途径。Planet公司采用自己研制的5 kg量级卫星和4.5 m口径地面接收天线,在X数传频段的300 MHz带宽内实现了1.6 Gbit/s的信息传输速率。梳理了Planet数传系统的发展历程,对其原理进行了分析和计算,整理了地面站实际接收Dove卫星数传的统计数据,展现了Dove在Cubsat上实现1.6 Gbit/s速率的途径和结果,为遥感卫星高速数传的实现提供一种思路。With the increase in the resolution of remote sensing satellites for earth observation,the way downloading data has be⁃come a bottleneck.To solve the problem,in addition to increasing the tracking pass and data compression ratio,increasing the trans⁃mission rate is the most effective way.Planet Company has achieved 1.6 Gbit/s transmission rate within a 300 MHz bandwidth of the X band between its 5 kg on-orbit Dove satellites and the ground station with 4.5 m diameter receiving antenna.This article sorts out the development history of the Planet's data transmission system,analyzes its principles and calculates link budget and presents statistical results of Dove satellite high speed transmission.The success of 1.6 Gbit/s transmission rate of Dove cubsat shows a high efficiently way for other remote sensing satellites.

关 键 词：Dove卫星 遥感卫星 X频段 高速数传 

分 类 号：TN91[电子电信—通信与信息系统]