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

小行星9560808 这个小企业创新研究第一阶段项目涉及到一个新的，创新的，无源无线电为基础的地理定位技术的应用，由建议公司开发，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，而不需要修改的移动的电话的调查。这种新的信号处理方法是基于一种在NIH资助下开发的技术，该技术旨在用于定位流浪的老年人和精神病患者。该技术采用了最大似然估计的发射机位置，这是基于联合估计的信号参数在多个现有的蜂窝基站。所提出的方法提供了一个潜在的数量级增加的定位精度超过现有的技术，也有望允许在建筑物内的发射器的位置。这种新技术在实施上有望是廉价的，并且不需要象某些现有技术那样昂贵的宽带专用线路连接到中央处理设备，也不需要象现有的GPS和罗兰-C定位装置那样在移动的终端上进行信号处理。建议新的信号处理技术适于使用从蜂窝电话周期性地发射的现有控制信号;这样的建议确保不需要修改蜂窝电话或现有蜂窝基础设施来实现最终系统。 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。模拟将被用来研究性能的准确性，建筑物的渗透，所提出的技术在各种现实的无线电传播条件下所需的复杂性。结果将用于确定第二阶段原型实施的最低硬件配置。将为使用蜂窝电话传输的拟议系统开发性能模型，并估计实施成本。第一阶段计划将完成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。将对拟议技术与其他地理定位技术进行竞争分析，并制定深入的商业化计划。 所提出的地理定位技术将应用于增强的9-1-1服务的低成本实现，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的计算机的跟踪、儿童定位设备、罪犯跟踪、宠物定位设备、被盗车辆恢复、丢失/被盗的蜂窝电话恢复，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.