Analysis and compare of location technologies supporting LBS

Location technology is the key part of location based service. Different technologies have different accuracy, modifying to network and cost of operating. Also these technologies have limitation to network. This paper compares existing popular location technologies and gives some suggestions about choosing of location technologies in GSM and CDMA systems.     

Analysis and compare of location technologies supporting LBS

Location technology is the key part of location based service. Different technologies have different accuracy,modifying to network and cost of operating. Also these technologies have limitation to network. This paper compares existing popular location technologies and gives some suggestions about choosing of location technologies in GSM and CDMA systems.     

LBS系统安全性

LBS（基于位置服务）是利用移动用户的位置信息,为用户提供的一种新型的增值服务。用户位置信息具有天然的敏感性,加之目前专门针对LBS的政策法规的缺位,如何防止用户位置信息的泄露便成为一个亟待解决的问题。对此,该文首先通过分析LBS系统的架构、服务流程来阐述目前已经应用于LBS系统的安全隐私保护措施。之后提出一些目前仍然...     

Wireless location technology and its application

Wireless location technology is used to locate,track and monitor the location of given target using devices such as the radio frequency identification(RFID) based on WiFi technology and the sensors. And such applications as long term evolution(LTE) ,wireless local area networks(WLAN) ,RFID and location based service(LBS) are essential in today’s wireless communications industry. In this paper,both wireless location technology and its application are proposed,where our experimental research results and theoretical innovation are included.     

移动网络的混合定位技术及其实现

移动定位服务已成为移动运营商的新业务增长点．而目前提出的定位技术都有各自的不足。介绍了移动定位技术中的TDOA和A—GPS基本原理，并在此基础上提出了结合TDOA和A—GPS两种定位技术优点的混合定位技术。同时又介绍了在第三代移动网络上的具体实现。这对于基于第三代移动通信的定位服务的推广和商用具有重要意义。     

LBS在数字景区中的应用设计

从数字景区移动位置服务(Location Base Service,LBS)需求入手,探讨了数字景区LBS系统体系框架.归纳、列举、比较了目前移动定位技术、移动通讯技术、移动操作系统平台以及各平台下移动LBS应用程序开发的难易程度.分析了景区LBS的工作流程,试验了在WindowsMobile平台下开发数字景区LBS应...     

LBS软件平台的实现技术

基于位置服务的应用，种类繁多且市场巨大，因此，有必要开发一个平台软件，以便在此平台上高效地开发出各种LBS应用软件。阐述了采用组件技术开发LBS软件平台能够适应长期持续的LBS应用开发的必然性，给出了组件式LBS软件平台的体系结构，讨论了LBS核心组件的功能。所提供的基本接口和核心功能适用于不同的移动通信网，能支持LBS应用的开发、定制和扩充，避免了重复开发。，，，     

Hybrid location determination technology within urban and indoor environment based on Cell-ID and path loss

The location determination technology based on simple delay evaluations or GPS is not accurate enough or even impossible in urban and indoor environments due to the multi-path propagation. To enhance the location accuracy and reduce the operation cost within these environments, this paper proposes a novel hybrid location determination technology which combines CELL-ID with the database correlation method. The proposed method generate the prediction database of path loss according to CELL-ID, and after the computation the smallest squared error of measured path loss and the prediction path loss,the location of the mobile terminal is decided by the coordinates of the best matching matrix entry.     

Hybrid location determination technology within urban and indoor environmeng based on Cell _ID and path loss

The location determination technology based on simple delay evaluations or GPS is not accurate enough or even impossible in urban and indoor environments due to the multi-path propagation. To enhance the location accuracy and reduce the operation cost within these environments，this paper proposes a novel hybrid location determination technology which combines CELL-ID with the database correlation method. The proposed method generate the prediction database of path loss according to CELL-ID，and after the computation the smallest squared error of measured path loss and the prediction path loss，the location of the mobile terminal is decided by the coordinates of the best matching matrix entry.     

基于LBS的最优出行路径算法的研究与应用

文章是基于LBS移动二次定位位置服务平台进行最优出行路径的研究.研究的目的是在LBS移动定位平台上实现基于出行者决策的最优路径选取,对人们选择最佳出行路线进行导航;在最优出行路径方面将问题分为最短路径算法和路径的权值2个问题;在最短路径算法方面选取了Dijkstra算法,并采用分层搜索、动态限制搜索区域算法对Dijkstra进行辅助,提高算法响应速度;在路径权值的确定方面,采用基于出行者决策的理论模型,对该决策算法进行适当调整,对路径权值重新裁定.     

Hybrid location determination technology within urban and indoor environment based on Cell-ID and path loss

The location determination technology based on simple delay evaluations or GPS is not accurate enough or even impossible in urban and indoor environments due to the multi-path propagation. To enhance the location accuracy and reduce the operation cost within these environments, this paper proposes a novel hybrid location determination technology which combines CELL-ID with the database correlation method. The proposed method generate the prediction database of path loss according to CELL-ID, and after the computation the smallest squared error of measured path loss and the prediction path loss,the location of the mobile terminal is decided by the coordinates of the best matching matrix entry.     

基于LBS应用的分布式移动GIS技术实现

分布式移动地理信息系统是传统GIS在21世纪移动互联网时代发展的新方向。笔者分析了应用于 空间定位服务(LBS)的分布式移动地理信息系统(DM-GIS)的原理>特点和有关关键技术,提出了应用 DM-GIS技术的解决方案。     

基于LBS应用的分布式移动GIS技术实现

分布式移动地理信息系统是传统GIS在21世纪移动互联网时代发展的新方向。笔者分析了应用于空间定位服务(LBS)的分布式移动地理信息系统(DM-GIS)的原理、特点和有关关键技术，提出了应用DM-GIS技术的解决方案。     

LBS在景区游客管理中的应用研究

LBS在数字景区中的应用越来越广泛,文章从景区游客管理相关方面存在的问题入手,详细介绍了LBS在景区游客管理中的主要应用范围,包括景区导览服务、位置跟踪服务和搜救服务三个方面,接着探讨了应用中的关键技术及实现方案.此应用研究已经成功实现于杭州西溪国家湿地公园西区.实例证明,该研究成果具有较大的可行性及推广性.     

高新技术产业化园区形成机制研究

从高新技术产业发生的角度出发,运用概率选择模型研究了相邻效应条件下高新技术产业化园区的形成机制,并得出若干启示与结论。     

A Framework of Web Data Integrated LBS Middleware

0 IntroductionRecently,the advance of wireless Internet and mobilecomputing has brought out various mobile services ,among whichlocation-based services (LBS) will be the killerapplications as 3G era comes . Such LBS applications includemobile yellowpage service (nearby service) , E-coupon serv-ice, mobile buddy-list service, traffic navigation, child/pettracking,emergency support service,location-based ads/newssubscribing,and evenlocation-based games .In order to make those applications wo…     

基于LBS的跑步软件设计

以LBS为基础,根据实际项目需求,利用J2EE相关技术搭建服务器,并基于iOS操作系统设计了一款集跑步和社交应用于一体的跑步软件,实现了以移动终端为前台,以Web架构为后台服务的典型移动应用。根据实际测试结果提出了改进方案。该应用程序的系统架构、测试优化,对于移动APP的开发具有一定的参考价值。     

班车实时定位系统的设计

为了满足新型班车连续高精度的定位需求, 采用GPS/LBS组合定位方法,提出了一种实时班车定位方案。主要设计了一种由STM32F103单片机、SIM7600CE模块集成的终端,支持GPS/LBS组合定位,并通过企业微信平台,查看车辆的实时位置。前期对于LBS异常数据采用基于几何距离的算法去除噪点,基于速度约束的漂移点判定异常,采用道格拉斯-普克算法进行轨迹压缩,最终实时位置、行车路线显示在客户端。本文重点使用了中值滤波对路线的轨迹进行优化,同时使用路点与道路匹配算法使得坐标吸附到主干道上。运行结果表明,系统位置指示精度高,查询方便。     

单站无源定位系统定位算法分析与研究

本文详细分析了测量目标辐射源脉冲到达时间和到达方向对空中运动辐射源进行单站无源定位的扩展卡尔曼滤波算法,同时研究了修正增益扩展卡尔曼滤波算法,并且对两种方法进行了比较。最后给出了计算机仿真结果,这两种方法在无源定位系统中有很强的实用性。     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents. A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.