APPLICAIONTS OF SMALL SATELLITE CONSTELLATION FOR ENVIRONMENT AND DISASTER MONITORING AND FORCASTING (SSCEDMF) IN DISASTER MONITORNG AND ASSESSMENT

摘要

SSCEDMF is a new generation of in-building remote sensing constellation. Just as the name, the new constellation was especially designed for the environment and disaster monitoring and forecasting. And the constellation is also shortly named as HJ. The satellites of SSCEDMF started to launch continuously since 2008. Being the first part of the constellation, HJ-1 A and B were launched on September 6th, 2008, which were launched by the same rocket. By now, all the two satellites work well, and high-quality remote sensing data are acquired and transmitted to the ground steadily. There are three kinds of optical remote-sensing sensors on board, multi-spectral imager (CCD), infrared imager (IRS) and hyper-spectral imager (HSI). The swath of CCD could be about 700km, and the revisit-period of the constellation could be less than 48 hours. So, the constellation, with wide-swath and short revisit-period character, is more suitable for the disaster emergency applications. And, the different kinds of space-borne instruments also provide a new steady and multi-spectral remote sensing data for the disaster monitoring and assessment in China. Since the satellites launched, HJ-1 A/B had been widely used for the monitoring and assessment of the disaster, such as blizzard. Based on a series of HJ-1 A/B applications in the past months, the wide-swath CCD has been turned out to be more suitable for the wide-region disaster monitoring and assessment, such as blizzard. IRS data work well for the hot-spot detection and forest fires assessment, and it is also applicable for the snow detection and drought risk monitoring. In this paper, the characteristics and working-condition of constellation and instruments would be introduced in brief firstly. In the second part, based on the study on the application capability evaluation and the technological route, the HJ-1 A/B data were applied for the disaster monitoring and assessment of the blizzard in Tibet. Finally, the application capability of HJ-1 A/B is evaluated. And a technical application method, for blizzard monitoring, risk forecasting and disaster assessment, are established, which would contribute to expand the application benefit of the satellite constellation.