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Assembly line topology network dynamic simulation method based on adaptive-dimensional DEM (dynamic effect model)

A topology network and dynamic simulation technology, applied in the field of pipeline topology network dynamic simulation based on adaptive scale DEM, can solve problems such as difficulty in supporting complex watershed hydrological models, and ignoring temporal and spatial scales.

Inactive Publication Date: 2012-10-10
WUHAN UNIV +1
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Problems solved by technology

[0016] The above inventions do not take into account the problem of time and space scales, and it is difficult to support complex hydrological models of watersheds

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  • Assembly line topology network dynamic simulation method based on adaptive-dimensional DEM (dynamic effect model)
  • Assembly line topology network dynamic simulation method based on adaptive-dimensional DEM (dynamic effect model)
  • Assembly line topology network dynamic simulation method based on adaptive-dimensional DEM (dynamic effect model)

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Embodiment Construction

[0062] The core problem to be solved by the present invention is to construct a pipeline topology network model based on self-adaptive scale DEM, carry out dynamic simulation of water flow at multiple scales, and maintain the accuracy and consistency of the results at different scales, so as to meet the needs of wide-area Multi-scale or cross-scale application requirements to a local scale, while improving the accuracy, scope and efficiency of surface water flow dynamic simulation.

[0063] The flow process of embodiment sees appendix figure 1 , adopting a pipeline topology network (TFN) model based on adaptive scale DEM (S-DEM) to realize the dynamic simulation of surface water flow. Feature points and lines are extracted from high-precision DEM data, and an adaptive scale DEM database (S-DEM) based on river network constraints TIN is constructed. On this basis, calculate the water flow direction of each triangle in the TIN, and construct the water flow line from any positio...

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Abstract

The invention provides an assembly line topology network dynamic simulation method based on an adaptive-dimensional DEM (dynamic effect model), which comprises the following steps of extracting topographic and hydrologic characteristics and applying the characteristics with dimensional attributes by fully utilizing daily-increased high-precision DEM data so as to construct an adaptive-dimensional DEM database based on a river network restrain TIN; and based on the database, calculating each triangular water flow direction in the TIN, and constructing a water flow line from any positions to a river basin exit so as to simplify three-dimensional topographic expression to be in a one-dimensional topology assembly line structure and realize an embedded multi-dimensional multilayer topology structure; and calculating associated hydrologic parameters by utilizing a topical hydrologic formula and realizing earth surface water flow dynamic simulation multi-dimensional application from a wide range to a local range.

Description

technical field [0001] The invention belongs to the field of digital terrain analysis, in particular to a dynamic simulation method of pipeline topology network based on self-adaptive scale DEM. Background technique [0002] The dynamic simulation and prediction of geoscience processes is a research hotspot in the fields of geography, environmental science, information science and so on. As a typical application of dynamic simulation of geoscience process, hydrological model has attracted the attention of many experts and scholars for a long time. For example, through the dynamic simulation of the surface water process, the flood disaster situation can be predicted on the basis of the rainfall runoff formation principle and the flood wave movement law, so as to assist in flood control decision support; the pollution caused by sudden water pollution accidents can be simulated , so that the affected scope and objects can be determined in time, and appropriate measures can be ...

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Application Information

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IPC IPC(8): G06T17/05
Inventor 陈玉敏周启鸣朱全生龚健雅祁昆仑
Owner WUHAN UNIV
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