【摘要】：由于地理空間數(shù)據(jù)具有一定的保密性,不能直接應用于社會公眾服務,只有對地理空間數(shù)據(jù)采取一定技術(shù)手段進行保密處理,才能保證數(shù)據(jù)安全。本文介紹了一種基于雙線性內(nèi)插模型的格網(wǎng)法坐標保密技術(shù),分別對每個格網(wǎng)內(nèi)要素的節(jié)點坐標進行偏移,由于每個格網(wǎng)偏移的參數(shù)不同,改變了每個要素節(jié)點的絕對坐標和相對坐標,脫密程度較高,且不可逆。通過實際應用證明,該方法有效地實現(xiàn)了地理空間數(shù)據(jù)的脫密,同時,滿足了社會公眾對地理空間數(shù)據(jù)的應用需求。
[Abstract]:Because of the confidentiality of geospatial data, it can not be directly applied to the public service. Only when geospatial data is treated confidentially, can the security of data be ensured. In this paper, a security technique of grid coordinates based on bilinear interpolation model is introduced, in which the node coordinates of each element in each grid are offset, because the parameters of each grid offset are different. The absolute and relative coordinates of each element node are changed and the degree of densification is high and irreversible. It is proved by practical application that the method can effectively realize the demagnetization of geospatial data, and at the same time, meet the needs of the public for the application of geospatial data.
【作者單位】： 重慶數(shù)字城市科技有限公司;重慶市地理信息云服務企業(yè)工程技術(shù)研究中心;
【分類號】：P208

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