Development of high-resolution satellite ground processing system

Bingbing WANG; Wenyong YU; Xiaoxiang LONG; Jun LIN; Haibo WANG; Chaoyu SONG; Qi CHEN; Shule GE; Shuai LI

doi:10.11834/jrs.20210369

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Development of high-resolution satellite ground processing system
Vol. 25, Issue 9, Pages: 1946-1963(2021)
Received：25 August 2020，

Published：07 September 2021
DOI： 10.11834/jrs.20210369
稿件说明：

移动端阅览

王冰冰，喻文勇，龙小祥，林军，王海波，宋超宇，陈琦，葛曙乐，李帅.2021.高分辨率卫星地面处理系统研制.遥感学报，25（9）： 1946-1963 DOI： 10.11834/jrs.20210369.

Wang B B， Yu W Y， Long X X， Lin J， Wang H B，Song C Y， Chen Q， Ge S L and Li S. 2021. Development of high-resolution satellite ground processing system. National Remote Sensing Bulletin， 25（9）：1946-1963 DOI： 10.11834/jrs.20210369.

摘要

高分卫星地面处理系统是高分辨率对地观测系统重大专项的重要组成部分，实现高分一号到高分七号卫星各载荷数据录入、各级标准产品生产、存档、仿真、评价、分发服务、定标检校以及有效载荷管理等。地面处理系统采用了基于HADOOP平台的计算与存储统一的云计算地面处理架构，通过HDFS分布式文件系统将节点内部存储聚合为海量数据存储系统，通过YARN资源管理系统实现海量数据的统一调度和大规模并行处理，结合多光谱、高光谱、红外、微波、激光雷达和大气探测等多种卫星遥感数据高精度处理算法，构建多星通用大数据综合处理平台，大幅提升数据综合处理、数据存储与管理、分发服务等能力，为各类用户提供高精度、高质量的标准数据产品。

Abstract

The ground processing system of the high-resolution satellites is an important component of the high-resolution earth observation system. Following the principles of standardization

safety and reliability

maintainability

economy

and advanced technology

a remote sensing data comprehensive processing platform

which can realize the functions of data ingestion

multilevel standard data production

archiving

simulation

evaluation

distribution services

radiometric and geometric calibration

observation management of the payloads on GF-1 to GF-7 satellites

is designed and developed.

The ground processing system adopts the cloud computing ground processing architecture based on the HADOOP platform and integrates the internal storage of nodes into a massive data storage system through the HDFS distributed file system. It also realizes the united scheduling and large-scale parallel processing of massive data through the Yarn resource management system. Moreover

it studies and develops the high-precision processing algorithms of the multispectral

hyper-spectral

infrared

microwave

Lidar

and atmosphere detection payloads on the satellites.

The high-resolution satellite ground processing system builds a multisatellite comprehensive processing platform for massive satellite data. The capabilities of the ground processing system have been substantially improved in data integrated processing

data storage and management

and data distribution services; it provides standard data products to users with high accuracy and quality.

It has 400 trillion calculations per second and highly automated data processing capacity of more than 20 TB per day. It can process a wide range of satellite payload types for GF-1 to GF-7 satellites. In the normal mode

the data processing time of each orbit is not more than 2 hours

and the emergency processing time is not more than 45 minutes.The system has 25 PB scalable storage and management capabilities of massive remote sensing image data. The products are stored online and near line within the life cycle

and level 0 data are permanently archived.

For data distribution

the system can distribute more than four million scene data every year and supports 1000 external users to visit and retrieve the data on the service website at the same time. The average retrieval response time is less than 10 seconds. It also supports 200 external users to download data products online.

The system has the continuous operation ability of 7×24 hours. The operation stability is better than 99%. The main and backup switches of the key business equipment are completed within 10 minutes after the failure. The mean time to repair is 4 hours.

The high-resolution satellite ground processing system has realized satellite data ingestion

standard product processing

archiving

simulation

evaluation

distribution

calibration

payload management

and data sharing services. It has also realized the comprehensive data processing of a wide range of remote sensing data

which cover optical

submeter high spatial resolution

multimode radar

geosynchronous orbit

hyperspectral resolution

atmospheric

stereo mapping

and Lidar earth observation. A multisatellite and multiload remote sensing data product system have been established to provide multisource remote sensing data for land

ocean

agriculture

disaster reduction

forestry

water conservancy

environment

earthquake

meteorology

transportation

surveying

and mapping users. It has played an important role in promoting China’s economic construction

social development

scientific and technological progress

and serving China’s belt and road initiatives.

关键词

Keywords

references

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