SBIR PHASE I: A Unique High Accuracy Means of Locating Cellular Telephones Using the Existing Cellular Infrastructure

9560808 Parl这项小型企业创新研究第一阶段计划涉及一项调查，目的是研究一项由提出建议的公司开发的新的创新无源无线电地理定位技术，以解决在不需要对移动电话进行改装的情况下定位和跟踪蜂窝电话和其他新兴的无线个人通信设备的问题。这种新的信号处理方法是基于一项部分由NIH资助开发的技术，该技术旨在用于定位流浪的老年人和精神病患者。该技术采用基于多个现有蜂窝基站的信号参数的联合估计的发射器位置的最大似然估计。拟议的方法在定位精度方面比现有技术有可能提高一个数量级，并有望实现建筑物内发射器的定位。这项新技术承诺实施成本不高，并且不需要像一些现有技术那样需要昂贵的宽带专用线路连接到中央处理设施，也不像现有的GPS和罗兰-C定位设备那样需要在移动终端进行信号处理。提议调整新的信号处理技术，以使用蜂窝电话定期发出的现有控制信号；这种提议确保不需要修改蜂窝电话或现有的蜂窝基础设施来实施最后的系统。该计划的第一阶段包括开发多基站蜂窝电话系统的计算机模拟。该模拟将被用来研究在各种实际无线电传播条件下所提出的技术在准确性、建筑物穿透性和所需的复杂性方面的性能。结果将用于确定第二阶段原型实施的最低硬件配置。将开发使用蜂窝电话传输的拟议系统的性能模型，并估算实施费用。第一阶段计划将以基站硬件的初步设计、基站单元的远程监测和控制计划以及基于初步设计的系统成本估算作为结束。我们将进行一项竞争性分析，将该技术与其他地理定位技术进行比较，并制定一项深入的商业化计划。拟议的地理定位技术将应用于低成本实施增强型9-1-1服务，以在紧急情况下定位无线电话、医疗状况监测/定位、低成本车辆跟踪和导航系统(包括自动调度)、用于网络管理的移动计算机跟踪、儿童定位设备、犯罪跟踪、宠物定位设备、被盗车辆找回、丢失/被盗蜂窝电话找回，以及广泛的智能交通系统(ITS)基于位置的服务系统。

9560808 Parl This Small Business Innovation Research Phase I project involves an investigation into the application of a new, innovative, passive radio-based geolocation technique, developed by the proposing firm, to the problem of locating and tracking cellular telephones and other emerging wireless personal communication devices without requiring modification to the mobile phones. The new signal processing method is based on a technique developed in part under NIH funding, which was designed for use in locating wandering elderly and mental patients. The technique employs a maximum-likelihood estimation of the emitter location which is based on joint estimation of signal parameters at multiple existing cellular base stations. The proposed approach offers a potential order of magnitude increase in location accuracy over existing techniques and also promises to permit location of in-building emitters. The new technique promises to be inexpensive in implementation and will not require costly wide-band dedicated line connection to a central processing facility, as do some current techniques, nor will it require signal processing at the mobile terminal, as do existing GPS and Loran-C location determination devices. It is proposed that the new signal processing technique be adapted to use existing control signals that are periodically emitted from cellular telephones; such proposal ensures that no modification of the cellular telephones or existing cellular infrastructure is required to implement a final system. Phase I of the program comprises the development a computer simulation of a multiple base station cellular telephone system. The simulation will be used to study the performance in terms of accuracy, building penetration, and required complexity of the proposed technique under various realistic radio propagation conditions. The results will be used to determine the minimum hardware configuration for Phase II prototype implementation. Performance models for the proposed system using cellular telephone transmissions will be developed and implementation costs estimated. The Phase I program will conclude with the preliminary design of the base station hardware, plans for remote monitoring and control of the base station units, and estimation of system costs based on the preliminary design. A competitive analysis comparing the proposed technique to other geolocation techniques and an in-depth commercialization plan will be developed. The proposed geolocation technique will have application in low-cost implementation of enhanced 9-1-1 services to locate wireless telephones in emergency situations, medical condition monitoring/location, low-cost vehicle tracking and navigation systems (including automated dispatch), tracking of mobile computers for network management, child location devices, criminal tracking, pet location devices, stolen vehicle recovery, lost/stolen cellular telephone recovery, and a wide range of Intelligent Transportation System (ITS) location-based service systems.