A Preliminary Discussion on Typical Problems in the Remote Sensing Project of Tibetan Mineral Resources Potential Evaluation
NI Zhong-yun 1,2, HE Zheng-wei 1,2,3, WU Hua 4, LIU Ting-ting 1,2
(1.State Key Laboratory of Geohazard Prevention & Geoenvironment Protection, Chengdu 610059, China;
2.Earth Science, Chengdu University of Technology, Chengdu 610059, China; 3.Key Laboratory of Resource Environment and GIS in Beijing, Capital Normal University, Beijing 100037, China; 4.Geological Survey of Tibet Autonomous Region, Lhasa 850000, China)
Abstract:The main purpose of the mineral resources potential assessment research based on the remote sensing method in Tibetan region is to extract abnormal remotely sensed information, make several kinds of geological maps,and provide basic maps and data for other cooperating research groups. Four typical problems have appeared in the project because of vast area, multi-temporal remote sensing images,too much software,complex processes and technical differences in technicians’ professional background and experience. The first problem is the incorrect understanding of the datum and map projection and the ignoring of the remote sensing image map projection distortion; the second problem is deleting too much or too little interference information and incomplete spatial topological relations during the anomaly information extraction; the third problem is the inappropriate strategy of remote sensing image mosaicking and color balancing; the fourth problem is low accuracy in the interpretation of geological features of mineral resources. Focused on these four problems,this paper proposed a practical solution which ensures the successful completion of the remote sensing project.
倪忠云, 何政伟, 吴华, 刘婷婷. 西藏矿产资源潜力评价遥感专题中典型问题初探[J]. 国土资源遥感, 2011, 23(1): 97-101.
NI Zhong-Yun, HE Zheng-Wei, WU Hua, LIU Ting-Ting. A Preliminary Discussion on Typical Problems in the Remote Sensing Project of Tibetan Mineral Resources Potential Evaluation. REMOTE SENSING FOR LAND & RESOURCES, 2011, 23(1): 97-101.