Research On Terrain Trafficability Analyse

Terrain trafficability refers to various conditions of terrain(elevation,slope,undulation,etc.),under the influence of various factors such as geology,vegetation,water system,etc.,the degree of support for traffic.The analysis and evaluation of terrain trafficability is an important topic in the field of Geographic Information System research,and plays an important role in military combat command,regional condition assessment,path planning,and robot navigation.This article focuses on the terrain trafficability under the influence of various factors,and studies the content and methods of terrain trafficability analysis based on raster data.The main work is as follows:(1)Discuss the concept of terrain trafficability,define the accessibility coefficient to quantitatively describe the terrain trafficability under the influence of various factors,and divide the trafficability interval.The main influencing factors of terrain trafficability are divided into terrain factors,geological factors,vegetation factors,hydrological factors,artificial facilities factors and meteorological factors.Analyze the mutual influence and common effect of various factors,and put forward an analysis system of terrain trafficability.(2)The terrain trafficability results under the influence of various factors are analyzed separately and stored in layers.It is proposed to use the overlay analysis method to combine the analysis results of each factor into the analysis results of terrain trafficability under the combined action of multiple factors.At the same time,fuzzy mathematics is used to describe the specific factors among the factors that affect terrain trafficability,and establish a connection between their fuzzy evaluation sets and trafficability intervals.(3)Use a set of simulated data to analyze the terrain trafficability,verify the feasibility of the method,and analyze the results.Through theoretical test and experimental verification,it is proved that the terrain accessibility coefficient proposed in this paper can describe the terrain trafficability more accurately.The established terrain trafficability analysis system analyzes the single factors and comprehensive effects that affect the terrain trafficability more comprehensively;the overlay analysis method can be used to synthesize the comprehensive analysis results to achieve the purpose of multi-factor comprehensive analysis;and the fuzzy membership function is used to accurately describe the membership of the specific values of the factors that determine the trafficability of the terrain to the fuzzy evaluation set.Established to meet the requirements of fuzzy mathematics,the results are in line with people's fuzzy evaluation cognition.