摘要
针对高分七号卫星高速数据和快速下传需求,设计了数据处理与传输分系统。该分系统突破压缩码率自适应控制、多模式矢量调制、可变编码调制、分布式上行程序文件管理、大容量存储管理等多项关键技术,在轨实现了11 Gbit/s图像处理、双通道2×1.2 Gbit/s传输。分系统设计提升了图像压缩质量,增强了数据下传能力,提高了高分七号卫星的应用效能,可应用于后续高分辨率遥感卫星。
A data processing and transmission subsystem is designed for the requirements of high speed data rates and fast data transmission of the GF-7 satellite.This subsystem implements several key technologies,such as compression rate adaptive control,multi vector modulation,variable coding modulation,distributed uplink document management,large capacity storage management and so on,achieving 11Gbit/s image processing and dual channel 2×1.2Gbit/s data transmission on orbit.The subsystem design improves the quality of image compression,the data transmission capacity,and the efficiency of the GF-7 satellite,which can be applied to future high reso￣lution remote sensing satellites.
作者
郑小松
李立
张雨
靳凡
韩宇
赵云鹏
张莎莎
姚鑫雨
ZHENG Xiaosong;LI Li;ZHANG Yu;JIN Fan;HAN Yu;ZHAO Yunpeng;ZHANG Shasha;YAO Xinyu(Xi’an Institute of Space Radio Technology,Xi’an 710071,China;Xi’an Technology Institute of Microelectronics,Xi’an 710065,China;Beijing Institute of Spacecraft System Engineering,Beijing 100094,China)
出处
《航天器工程》
CSCD
北大核心
2020年第3期74-81,共8页
Spacecraft Engineering
基金
国家重大科技专项工程。
关键词
高分七号卫星
数据处理与传输
可变编码调制
码率控制
GF-7 satellite
data processing and transmission
variable coding modulation
rate control
