..............page:75-78,93
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..............page:59-64,2
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Earth System Spatial Grid and Its Application Modes
WU Li-xin;YU Jie-qing;Beijing Normal University;Beijing 100875;Academy of Disaster Reduction and Emergency Management;Ministry of Civil Affairs;Ministry of Education;Beijing Normal University;Beijing 100875;China)
..............page:7-13
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ESSG-Based Space Orbit Objects Management and Collision Detection Methods
TONG Xiao-chong1;2;3;WU Li-xin1;2;YU Jie-qing1;2;LI Zhi-feng1;2;Beijing Normal University;Beijing 100875;2.Academy of Disaster Reduction & Emergency Management;Ministry of Civil Affairs;Ministry of Education;Beijing Normal University;Beijing 100875; 3.Institute of Surveying & Mapping;Information Engineering University;Zhengzhou 450052;China)
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