该文提出的新思路对海底数字地图的模拟具有重要的参考价值，为海底地形匹配定位技术的研究提供了必要的前提。
The new idea of this article is significantly valuable to the simulation of sea-bottom digital cartographic, and it is the precondition of researching of sea-bottom terrain matching technology.
数字高程模型(dem)是对地球表面地形地貌的数字表达、模拟，DEM在地质学中得以广泛的应用。
Digital elevation moded (DEM) is a digital expression of landform surface, and its application in geology has become more and more extensive.
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