一种移动通信终端定位方法.doc
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1、一种移动通信终端定位方法A mobile communication terminal positioning method Abstract: :mobile terminal positioning can be used for emergency and rescue、people search、many fields such as value-added services, has a broad prospects for development, are now known to mobile terminal positioning technology have commu
2、nity identification number (Cell ID) location technology, mobile phones, A - GPS positioning technology etc.In this paper, a mobile communication terminal positioning method, namely using the primary service in the mobile terminal news plot of TA values (Time Advance) and the relationship between di
3、stance, repass algorithm is introduced in this paper, can accurate positioning of mobile communication terminal. The beneficial effects of this technology is, without having to improve user terminals at the same time, also do not need to enlarge the construction of mobile base stations, for the curr
4、ent popularity of mobile system (GSM, CDMA, WCDMA, td-scdma) users to provide timely, the high precision positioning services. Key words: TA value (Time Advance), mobile terminal positioning platform, TA and distance precision conversion table,The length of the base station of the TA value conversio
5、n 一、引言 目前,公知的手机定位技术是小区识别码(Cell ID)的定位技术和手机GPS定位技术,小区识别码(Cell ID)的定位技术是根据为手机提供服务的小区确定手机的位置,其存在的问题是精度差;而手机GPS定位技术是手机通过自带的GPS软件也可以进行定位,缺点是需要手机具有GPS定位功能、提取终端位置信息时GPS需打开、很多终端自带防火墙等软件禁止位置信息提取、GPS从打开到锁定卫星过程较慢等,并且GPS定位卫星信号容易被建筑物遮挡,造成在高楼密集区等区域收不到所需的GPS卫星信号就无法进行定位。 为克服现有移动通信中的GSM(全球移动通信系统)、CDMA(码分多址移动通信)、TD-S
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- 一种 移动 通信 终端 定位 方法
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