基于剖分网格的多源资源环境数据统一检索方法
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摘要
在应急事件保障中,多源资源环境数据相对孤立、关联性差,难以实现统一检索。从业务应用实际问题出发,基于地球剖分网格思想,将多源资源环境数据纳入到统一的网格参考基础下,多部门多源资源环境数据以网格编码为基础实现在逻辑上的统一组织,从而形成统一关联查询能力。以形状特征点、线、面为区分对资源环境数据进行网格编码后,将其纳入到编码索引表中,通过相关编码计算方法实现了数据的统一检索。实验表明,上述方法实现了多源资源环境数据的统一检索,提升效率10倍左右。
In the emergency treatment,multi-source resource environmental data,with isolation and poor relation,is difficult to be integrated retrieved.From the practical problems of applications,this article brings multi-source resource environmental data into an integrated grid reference system.Based on grid code,multi-source resource environmental data is integrated organized logically and integrated retrieval would be realized.With shape as the distinction,grid codes are given,and storage in code index table.According to code computing method,multi-source resource environmental data could be integrated retrieved.Real experiments show that,multi-source resource environmental data integrated retrieval is realized,and improve the efficiency by about 10 times.
In the emergency treatment,multi-source resource environmental data,with isolation and poor relation,is difficult to be integrated retrieved.From the practical problems of applications,this article brings multi-source resource environmental data into an integrated grid reference system.Based on grid code,multi-source resource environmental data is integrated organized logically and integrated retrieval would be realized.With shape as the distinction,grid codes are given,and storage in code index table.According to code computing method,multi-source resource environmental data could be integrated retrieved.Real experiments show that,multi-source resource environmental data integrated retrieval is realized,and improve the efficiency by about 10 times.
引文
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[19]Wu Ye,Chen Luo,Xiong Wei,et al.Multi-source Geospatial Data Correlation Model for Efficient Retrieval[J].Chinese Journal of Computers,2014,37(9):1 999-2 010(吴烨,陈荦,熊伟,等.面向高效检索的多源地理空间数据关联模型[J].计算机学报,2014,37(9):1 999-2 010)
[20]Song Shuhua,Cheng Chengqi,Pu Guoliang,et al.Global Remote Sensing Data Subdivision Organization Based on GeoSOT[J].Acta Geodaetica et Cartographica Sinica,2014,43(8):869-877(宋树华,程承旗,濮国梁,等.全球遥感数据剖分组织的GeoSOT网格应用[J].测绘学报,2014,43(8):869-877)
[21]Jin An,Cheng Chengqi.Spatial Data Coding Method Based on Global Subdivision Grid[J].Journal of Geomatics Science and Technology,2013,30(3):284-287(金安,程承旗.基于全球剖分网格的空间数据编码方法[J].测绘科学技术学报,2013,30(3):284-287)
[2]Chen Nan.Research on Integration of Multi-source Spatial Data[J].Application Research of Computers,2005,22(10):206-208(陈楠.多源空间数据集成的技术难点分析和解决策略[J].计算机应用研究,2005,22(10):206-208)
[3]Zhu Fubao,Yang Jinmei,Guo Qianqian.Emergency GIS System Based on GML and Multi-source Spatial Data[C].2011IEEE 3rd International Conference on Communication Software and Networks,Xi’an,China,2011
[4]Xie Bin,Yu Le,Lv Yang,et al.An Implementation of Multisource Spatial Data Uniform Access Model[J].Journal of Zhejiang University(Science Edition),2011,38(2):223-228(谢斌,俞乐,吕扬,等.一种多源空间数据统一访问模型的实现[J].浙江大学学报(理学版),2011,38(2):223-228)
[5]de Andrade F G,de Souza Baptist C,Davis Jr C A.Improving Geographic Information Retrieval in Spatial Data Infrastructures[J].GeoInformatica,2014,18(4):793-818
[6]Gong J Y,Xiang L G,Chen J,et al.Multi-source Geospatial Information Integration and Sharing in Virtual Globes[J].Sci China Tech Sci,2010,53(S1):1-6
[7]Wang Na,Yue Lihua,Jin Peiquan,et al.Multisource Geospatial Information Association Model Based on the Integration of Vector and Raster Data[J].Journal of Computer Research and Development,2012,49(Suppl):134-139(汪娜,岳丽华,金培权,等.基于矢栅一体化的多源地理空间信息关联模型[J].计算机研究与发展,2012,49(增刊):134-139)
[8]Dutton G.Encoding and Handling Geospatial Data with Hierarchical Triangular Meshes[C].Proceedings of 7th International Symposium on Spatial Data Handling,Delf,The Netherlands,1996
[9]Bartholdi J,Goldsman P.Continuous Indexing of Hierarchical Subdivisions of the Globe[J].International Journal of Geographical Information Science,2001,15(6):489-522
[10]Sahr K,White D,Kimerling A J.Geodesic Discrete Global Grid Systems[J].Cartography and Geographic Information Science,2003,30(2):121-134
[11]Zhou Mengyun,Chen Jing,Gong Jianya.A Pole-oriented Discrete Global Grid System:Quaternary Quadrangle Mesh[J].Computers&Geosciences,2013,61:133-143
[12]Li Deren,Zhu Xinyan,Gong Jianya.From Digital Map to Spatial Information Multi-grid——A Thought of Spatial Information Multi-grid Theory[J].Geomatics and Information Science of Wuhan University,2003,28(6):642-650(李德仁,朱欣焰,龚健雅.从数字地图到空间信息网格——空间信息多级网格理论思考[J].武汉大学学报·信息科学版,2003,28(6):642-650)
[13]Guo Jing,Liu Guangjun,Dong Xurong,et al.2-Level R-tree Spatial Index Based on Spatial Grids and Hilbert R-tree[J].Geomatics and Information Science of Wuhan University,2005,30(12):1084-1 088(郭晶,刘广军,董绪荣,等.基于空间网格和Hilbert R-tree的二级R-tree空间索引[J].武汉大学学报·信息科学版,2005,30(12):1 084-1 088)
[14]Li Deren,Xiao Zhifeng,Zhu Xinyan,et al.Research on Grid Division and Encoding of Spatial Information Multi-grids[J].Acta Geodaetica et Cartographica Sinica,2006,35(1):52-56(李德仁,肖志峰,朱欣焰,等.空间信息多级网格的划分方法及编码研究[J].测绘学报,2006,35(1):52-56)
[15]Li Deren,Bin Hongchao,Shao Zhenfeng.Design and Implementation of Land&Resources Grid Management and Service System[J].Geomatics and Information Science of Wuhan University,2008,33(1):1-6(李德仁,宾洪超,邵振峰.国土资源网格化管理与服务系统的设计与实现[J].武汉大学学报·信息科学版,2008,33(1):1-6)
[16]Tong Xiaochong,Ben Jin,Qin Zhiyuan,et al.The Subdivision of Partial Grid Based on Discrete Global Grid Systems[J].Acta Geodaeticaet Cartographica Sinica,2009,38(6):506-513(童晓冲,贲进,秦志远,等.基于全球离散网格框架的局部网格划分[J].测绘学报,2009,38(6):506-513)
[17]Zhang Tianjiao,Yan Tailai,Wang Haijiao,et al.Organization and Retrieval of Soil Spatial Grid Data Based on Morton Code[J].Transactions of the Chinese Society of Agricultural Engineering,2013,29(S1):235-243(张天蛟,严泰来,王海蛟,等.基于Morton码的土地空间网格数据组织与检索[J].农业工程学报,2013,29(S1):235-243)
[18]Dumedah G,Walker J P,Rüdiger C.Can SMOS Data be Used Directly on the 15km Discrete Global Grid[J].IEEE Transactions on Geoscience and Remote Sensing,2014,52(5):2 538-2 544
[19]Wu Ye,Chen Luo,Xiong Wei,et al.Multi-source Geospatial Data Correlation Model for Efficient Retrieval[J].Chinese Journal of Computers,2014,37(9):1 999-2 010(吴烨,陈荦,熊伟,等.面向高效检索的多源地理空间数据关联模型[J].计算机学报,2014,37(9):1 999-2 010)
[20]Song Shuhua,Cheng Chengqi,Pu Guoliang,et al.Global Remote Sensing Data Subdivision Organization Based on GeoSOT[J].Acta Geodaetica et Cartographica Sinica,2014,43(8):869-877(宋树华,程承旗,濮国梁,等.全球遥感数据剖分组织的GeoSOT网格应用[J].测绘学报,2014,43(8):869-877)
[21]Jin An,Cheng Chengqi.Spatial Data Coding Method Based on Global Subdivision Grid[J].Journal of Geomatics Science and Technology,2013,30(3):284-287(金安,程承旗.基于全球剖分网格的空间数据编码方法[J].测绘科学技术学报,2013,30(3):284-287)