面向海量智能终端的云定位系统设计与实现  

Design and Implementation of Cloud Positioning System for Massive Intelligent Terminals

作　　者：张传明 杨玲玲 刘敏 李伟 贾海禄 蒋方胜 李成洲 ZHANG Chuanming;YANG Lingling;LIU Min;LI Wei;JIA Hailu;JIANG Fangsheng;LI Chengzhou(Beijing Baidu Netcom Science and Technology Co.Ltd,Beijing 100085,China)

机构地区：[1]北京百度网讯科技有限公司,北京100085

出　　处：《武汉大学学报（信息科学版）》2021年第12期1872-1880,共9页Geomatics and Information Science of Wuhan University

基　　金：国家重点研发计划(2016YFB0501801)。

摘　　要：随着移动设备和低成本定位传感器的普及,移动终端的普适定位能力成为刚需。为了构建一个普适可用的云定位系统,需要在智能终端应用各类定位传感器获取信号并将其在定位数据库中进行查找、计算,实现对位置的获取。针对智能手机设备和位置服务应用(location based service,LBS)场景,基于主流云计算网络架构,探讨并解决了层次化云定位能力、开发者低成本接入、设备容错能力和分布式服务等工程化关键问题,设计并搭建了面向海量智能终端的大规模云定位系统。测试结果表明,该系统能够支撑每日千亿次请求的访问处理能力,提供面向亿级大众用户的定位服务。Objectives:With the popularity of mobile devices and low-cost sensors,the universal positioning capability of mobile terminals has become a strong demand.In order to build a universally available cloud positioning system,it is necessary to use various positioning sensors in smart terminals to obtain wireless signals,and search in the positioning database to complete the calculation of the position.Methods:In light of smart phone devices in location based service(LBS)scenarios,we focus on location service for massive smart phone devices and put forward the cloud computing network architecture.The breakthroughs on key engineering technologies such as hierarchical cloud positioning capabilities,low-cost access for developers,fault tolerance strategy and distributed positioning services are gained.Results:The testing result shows that cloud positioning system has realized the access processing capability of hundreds of billions of requests per day.Conclusions:Consequently,the system can provide location services for hundreds of millions of users and can be widely used in various location based applications.

关 键 词：海量用户 云定位 智能终端 融合定位 分布式服务 

分 类 号：P208[天文地球—地图制图学与地理信息工程]