席尔宾斯基垫片在格网DEM信息伪装中的应用

Study of Sierpinski Gasket used in grid DEM information disguise

DEM具有十分重要的军事经济价值,格网DEM是其最常见的一种表现方式。本文通过探讨席尔宾斯基垫片的一些性质,结合数字高程模型的数据特点,给出了席尔宾斯基垫片应用于DEM数据信息伪装的方法并进行了安全性分析,实现了n维席尔宾斯基垫片情况下的DEM信息伪装。通过实验分析了伪装效果与各种影响要素之间的关系。所提出的DEM伪装算法迷惑性强、安全性能良好,可以为DEM数据的存储和传输提供有力的技术保障。

DEM has very important military and economy value, grid DEM is the usually represented way. This paper discussed the character of Sierpinski Gasket, according to the characteristics of digital elevation model （DEbl）, studied the method of Sierpinski Gasket used in DEM information disguise, and analyzed its safety, carried out the disguises process under n dimension Sierpinski Gas- ket. Then, this paper validated the feasibility through experiments, and found the relation between the impression and some factors. The arithmetic for DEM information disguise has characteristics as strong captivation and good safety, could provide a forceful technique guarantee for DEM＇ s saving and delivering.