基于双线性内插模型的地理空间数据保密技术研究

发布时间：2018-09-07 15:58

【摘要】：由于地理空间数据具有一定的保密性,不能直接应用于社会公众服务,只有对地理空间数据采取一定技术手段进行保密处理,才能保证数据安全。本文介绍了一种基于双线性内插模型的格网法坐标保密技术,分别对每个格网内要素的节点坐标进行偏移,由于每个格网偏移的参数不同,改变了每个要素节点的绝对坐标和相对坐标,脱密程度较高,且不可逆。通过实际应用证明,该方法有效地实现了地理空间数据的脱密,同时,满足了社会公众对地理空间数据的应用需求。
[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.
【作者单位】：重庆数字城市科技有限公司;重庆市地理信息云服务企业工程技术研究中心;
【分类号】：P208

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