SBIR Phase II: A Unique, High Accuracy Means of Locating Cellular Telephones Using the Existing Cellular Infrastructure

Signatron的小型企业创新研究第二阶段项目专注于一种新型无线电定位技术，以降低公众确定紧急呼叫蜂窝电话位置的成本。 这项新技术采用一项专利技术，在两个或两个以上的基地电台收集来电电话信号参数，然后将这些参数传送到中央电脑，以计算位置。 在第一阶段，数学分析和计算机模拟被用来证明该技术的技术可行性。 该技术不仅被证明是可行的，而且被证明比现有技术更准确，成本也低一个数量级。在第二阶段，一个原型系统，包括与中央定位计算机连接的基站，将被纳入一个商业蜂窝电话系统，以进一步改进和评估该技术在实地作业中的作用。 除了紧急蜂窝电话定位（E911）的重要应用之外，这种新技术还将在其他基于位置的服务中具有许多应用，对于这些服务，当前的地理定位技术要么是无效的，要么是过于昂贵的。 这些服务包括基于位置的无线电话计费、定位欺诈性电话呼叫者、车队管理、假释跟踪、儿童定位、流浪阿尔茨海默病患者的定位、被盗车辆的定位、被盗设备（例如膝上型计算机）的定位以及丢失宠物的定位。

This Small Business Innovative Research Phase II project from Signatron is focused on a novel radiolocation technology lowering the costs to the public of determining the location of cellular telephones which place emergency calls. The new technology involves a proprietary technique for collection of the calling phone signal parameters at two or more base stations which are then transmitted to a central computer for position computation. In Phase I, mathematical analysis and computer simulations were used to prove the technical feasibility of the technique. Not only was the technique shown to be feasible, but it was shown to be much more accurate and an order of magnitude less costly than the existing state of the art. In Phase II, a prototype system, comprising base stations linked to a central position location computer, will be integrated into a commercial cellular telephone system to further refine and evaluate the technology in field operation. Besides the important application to emergency cellular phone location (E911), this new technology will have a number of applications in other location based services for which current geolocation technologies are either ineffective or too expensive. Such services include location based billing for wireless telephones, locating fraudulent phone callers, vehicle fleet management, tracking of parolees, child location, location of wandering Alzheimer's disease patients, location of stolen vehicles, location of stolen equipment such as lap-top computers, and location of lost pets.