英语翻译1.IntroductionWireless location estimation refers to the

英语翻译
1.Introduction
Wireless location estimation refers to the estimatedgeographic coordinates of a mobile subscriber based on measurements at basestations (BSs) or at a mobile in a wireless network.Location estimation isvery important for mobile and ubiquitous computing.The scope of wirelesslocation estimation applications includes logistics,field worker deployment,resource management,personal safety and tourism.In 1996,the Federal CommunicationCommission (FCC) determined that wireless service companies should providelocation identification for wireless emergency calls and the accuracy oflocation estimation should be within 125m [1].Since 2000,the FCC tightenedthe requirements for both mobile-based and network-based location estimationmethods.The FCC required that 67% of estimates should be accurate to within 50and 100m for mobile-based and network-based methods,respectively [2].Later,the rules for wireless Enhanced 911 were revised to improve the effectivenessand reliability of the 911 service by reporting the telephone number of amobile 911 caller and the location of the mobile phone within 50–100m ingeneral [3].These FCC rules are important factors influencing locationestimation technologies.Another reason for numerous research institutes,universities and companies to focus their energy on location estimationtechnology is market forecasts for value-added services of wireless locationestimation.It is reported that the location-based service will generate hugeannual revenues.Thus,the location- based service is considered as a standardservice in the third generation communication network.

简介
无线定位估计指的是一种基于测量在基站的移动用户的estimatedgeographic坐标（BSS）或在无线网络中的移动.位置估计是非常重要的移动和无处不在的计算.wirelesslocation估计的应用范围包括物流,现场人员的部署,资源管理,个人安全和旅游.1996,联邦communicationcommission（FCC）确定无线服务公司应providelocation无线紧急呼叫识别和定位的精度估计应在1.25亿[ 1 ].自2000以来,为基于移动网络的未知位置的FCC tightenedthe要求.FCC要求67%的估计应精确到50 100和基于网络的方法移动,分别为[ 2 ].后来,无线增强911的规则进行了修订的报告移动911来电者的电话号码和在50米上–[ 3的移动电话的位置,提高服务的效率和可靠性,911 ].这些法规是影响locationestimation技术的重要因素.众多研究机构的另一个原因是,大学和企业集中精力在位置估计技术相结合是无线locationestimation增值服务市场预测.据报道,基于位置的服务将产生hugeannual收入.因此,基于位置的服务被认为是第三代移动通信网络的standardservice.