Research On Localization Algorithm Of Wireless Communication Base Station

To locate the three-dimensional coordinates of the terminal,a method based on the communication between the base station and the user terminal is put forward.The main theory is to measure the time difference during signal transmission.Known the base station coordinates,get the coordinates of the terminal,using the algorithms related to equation approximate solution.Due to the influence of non-line-of-sight spread,clock synchronization and measurement accuracy,it is necessary to establish an error model to fit the real measurement data as far as possible.Then,the correlation between the positioning accuracy and the number of terminals involved is studied.Through several sets of test cases,it can be verified that the positioning model has a high accuracy.The introduction of the article mainly introduces the technical background of the communication base station positioning system,and compares the research directions of several existing wireless base station positioning algorithms.In the introduction of the model of the localization algorithm,the various factors that cause the measurement error of the electrical signal are discussed respectively.The measurement error model is proposed,and then the two-dimensional and three-dimensional basic positioning equations are given.This is the model basis of the localization algorithm.The text of the article first studied the measurement error model,through the scene of the specific sampling points to fit the scene of the measurement distance and the true distance of the error model.Then,the algorithm of two-dimensional positioning and three-dimensional positioning is introduced respectively.The least square method is used to solve the localization equations,and the positioning accuracy is improved by increasing the number of base stations participating in the positioning.On the basis of the basic positioning model,this paper studies the selection strategy of the communication base station,and improves the efficiency of the positioning algorithm on the basis of ensuring the positioning accuracy.Finally,the paper considers the influence of communication radius on terminal location,introduces the concept of connection degree,studies the relationship between measurement accuracy and connection degree,and further improves the practicability of the localization algorithm.