Micro-quantized terrain perception method and system based on lightweight geographic information engine

Abstract

The application discloses a kind of based on lightweight geographic information engine's micro-quantization topographic perception method, based on map data service completes original map data tile cutting, constructs tile pyramid model, carries out basic geographic information data reorganization rendering, establishes the two-dimensional and three-dimensional integrated map based on tile data;Constitute longitude and latitude network and micro-differential network double network expression mode, the position of target point is represented by longitude and latitude network, and the perception area is divided by micro-differential network, to realize micro-differential network and basic geographic information data fusion;Selected perception area determines the corresponding micro-grid to carry out feature color representation;According to the coverage range of perception area, the corresponding two-dimensional, three-dimensional basic geographic information data is extracted, based on two-dimensional data, the first classification of ground features is judged, based on three-dimensional data, topographic calculation is carried out, and the ground topographic fusion perception result is generated by coordinate matching;The corresponding relationship between longitude and latitude network and micro-differential network is used to cut and splice tile basic geographic information data boundary, divide feature interval boundary, complete each feature area quantitative calculation by irregular polygon area calculation method, and carry out comprehensive visualization.The elements of the present application cover a wide range of types, and can effectively support the path planning needs of different entities such as people, vehicles, ships and aircrafts;The terrain network is constructed in detail, which can realize rapid locking and comprehensive analysis of terrain conditions in different areas.

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