Research On Time Synchronization Algorithm Based On UWB Indoor Positioning

With the advancement of science and technology and so the event of the days,people's demand for positioning is obtaining higher and better.The global navigation system and therefore the Beidou system have well met the wants of people for outdoor activities.In recent years,people's indoor living areas became several and plenty of inauspicious,and therefore the demand for precise location and steering in looking malls,airports,factories,etc.has also gradually increased.Indoor positioning technology is step by step changing into the main focus of analysis.Ultra-wideband technology has high positioning accuracy,can handle multi-channel fading well,low power consumption and excellent signal confidentiality,providing a better solution choice for high-precision indoor positioning.This article is mainly divided into t three parts:(1)The basic principle of the technology is explained,and 3 indoor positioning ways and implementation ways square measure explained intimately.that involves the mensuration technique supported the angle of the signal and also the mensuration technique supported the time of arrival of the signal.(2)In the customary TDOA,time synchronization between base stations is achieved through wired ways,that makes the preparation of the whole system inconvenient and is stricken by the encircling surroundings.To unravel this drawback,this paper proposes an improved TDOA positioning technique to scale back the problem of wireless synchronization.Aiming at the clock deviation and clock offset caused by the defect of the quartz oscillator and also the random delay of signal transmission between the bottom stations throughout the transmission between base stations,an improved TPSN time synchronization algorithmic rule is projected.Through code simulation analysis,the impact of transmission delay is reduced,the accuracy of it slow synchronization between base stations is improved,and also the clock deviation between base stations is reduced.(3)After the bottom station measures the space between the bottom station and also the tag,it enters the answer section of the tag coordinates.This text analyzes many indoor positioning algorithms and finds out their blessings and drawbacks.The accuracy of the Chan algorithmic program is plagued by the occlusion within the take a look at surroundings.If the initial position of the label is wrong,it'll greatly have an effect on the positioning accuracy.seeable of the issues of those 2 algorithms,we tend to incorporate the Chan algorithmic program and Taylor algorithmic program,and handled the answer method by setting the coefficient constant.This algorithmic program combines the benefits of the 2classic algorithms,and corrects the burden by shrewd the common error anytime.Through software package simulation analysis,it's ended that the algorithmic program has high positioning accuracy,will give additional correct answer ends up in ultra-wideband indoor positioning,and has higher anti-noise ability.