Small Satellite Constellation and Its Performance for Disaster and Environment Monitoring

摘要

China is one of the counties struck by many kinds of natural disasters with high frequency, broad distribution and great losses, and environment protection is very important task in the country. In order to take the advantage of remote sensing technology in the field of disaster and environment monitoring, the satellite constellation with eight small satellites has been proposed. "Environment and Disaster Monitoring and Forecasting Small Satellite Constellation" isthe space segment of China' s environment and disaster monitoring system, hereinafter called " HUANJING Constellation". According to the Country's Tenth Five-year Plan, three (so called "2 + 1") earth observation satellites will be launched and will take optical and SAR images of the Earth to bring the capacity of monitoring environment and disaster. In this paper, the 2+1 constellation under the development is introduced, including the application requirements, orbit selection, the payloads and platforms design. And the system performances are presented including revisit interval, coverage period, instrument band, spatial and radiation resolution, swath, image location accuracy, signal and image processing requirement, etc.