Research And Implementation Of Communication Network Planning System Based On Electronic Map

With the development of communication technology,wireless network plays an increasingly important role in many fields,communication equipment is constantly updated,and network planning becomes more and more complex.A reliable and stable communication network plays an increasingly important role in modern command system.In this paper,the communication network planning system based on visual geographic information is studied.Through the attenuation prediction of electromagnetic wave transmission,combined with improved genetic algorithm,the communication network is intelligent and effective planning under the condition of ensuring the quality of network communication.The system can provide visualization of terrain data,this topic proposed in combination with ground elevation data for terrain 2 d modeling,constructing terrain database,and combining the baidu map platform realizes the analysis of terrain data and management,implementation based on the latitude and longitude mulch production,custom map events,and other functions,and at the same time for subsequent wireless electromagnetic wave propagation model to provide accurate data,Improve the accuracy of field intensity prediction and link attenuation prediction.The construction of communication network is inseparable from the wireless propagation model.The wireless propagation model can predict the propagation characteristics of radio waves in the target communication coverage area and estimate the network transmission and other related indicators.This topic uses ITU-RP.526 wireless model for propagation prediction,which is a new diffraction model that comprehensively integrates various diffraction theories and calculates propagation loss according to the specific analysis of the ground.By analyzing the ground type,judging the line-of-sight transmission,judging the type and number of obstacles,and calculating the loss in different scenarios,the transmission loss of the signal at a certain position in the region can be determined,and the two main functions of regional field intensity coverage prediction and link transmission attenuation prediction can be realized.Considering the equipment limitations carried by nodes and the requirements of network destructivity,the construction of communication network can be summed up as the degree-constrained minimum spanning tree problem.Based on the attenuation prediction results of signal transmission,this paper adopts the improved genetic algorithm to solve the optimal solution of the network.Prufer coding was used to optimize the initial population to make it have a higher fitness,and guided mutation optimization was proposed to increase the search space and speed up convergence.Through continuous iteration,the individuals in the group approach the optimal solution of the problem,and finally plan the topology of the communication network.