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Data acquisition mechanism of international Charter based on disaster events and processes |
| HE Haixia1, CHEN Weitao2, WU Wei1, LI Yafei3 |
1. National Disaster Reduction Center and Satellite Disaster Reduction Application Center, Beijing 100124, China;
2. College of Computer Science and Department for Geodynamics and Deep Space Exploration of NRSCC, China University of Geosciences(Wuhan), Wuhan 430074, China;
3. School of Land Science and Technology, China University of Geosciences(Beijing), Beijing 100083, China |
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Abstract The development,activation,operating mechanism and data policy of international Charter were described in this paper. The activation and application cases aimed at investigating the disaster in China were analyzed. Then the main problems existent in Charter were summarized in the situation of concurrent multi-disaster and frequent severe disaster, which include the lack of activation condition and uniform operation system, the insufficient thematic data service, and the imperfect intellectual space databases system. These problems have led to the low efficiency in data acquisition, simple data type, and lower degree of automation. In order to solve these problems, this paper presented a dynamic and automatic data acquisition program aimed at the specific target, which can release time window constrains during the different disaster events and disaster processes. The results indicated that this program can pay more attention to the satellite scheduling and users' needs so as to ensure the timeliness and accuracy of multi-source data acquisition and avoid the data redundancy.
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| Keywords
MODIS
night time radiation fog
Santa Barbara DISORT atmospheric radiative transfer(SBDART)
brightness temperature difference(BTD)
dynamic monitoring
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Issue Date: 28 March 2014
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2014,
Vol. 26
