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公开(公告)号：US06845240B2
公开(公告)日：2005-01-18
申请号：US10011783
申请日：2001-12-11
CPC分类号： G01S5/0081 , G01S5/06 , H04B7/086
摘要： A system and method for determining the geolocation of autonomous mobile appliances emitting analog waveforms is disclosed. More specifically, the inventive system and method is used to geolocate FM analog signals such as those used in the AMPS cellular radio air standard by using a time difference of arrival (“TDOA”) approach. The inventive system and method uses a novel approach to minimize the amount of data sent between location sensors and the central location processor comprising adaptive signal combining from N channel to a single channel, FM demodulation to reduce bandwidth, Fourier transformation for signal compression, and segmentation of the location sensors into primary and secondary modes to allow for parallel processing to ease the computational burden on the central location processor.
摘要翻译： 公开了一种用于确定发射模拟波形的自主移动设备的地理定位的系统和方法。 更具体地，本发明的系统和方法用于通过使用到达时差（“TDOA”）方法来对诸如在AMPS蜂窝无线电空中标准中使用的FM模拟信号进行地理定位。 本发明的系统和方法使用新颖的方法来最小化在位置传感器和包括从N个信道到单个信道的自适应信号组合的FM中央位置处理器之间发送的数据量，FM解调以减少带宽，用于信号压缩的傅里叶变换和分段 的位置传感器进入主模式和次模式，以允许并行处理以缓解中央位置处理器的计算负担。
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公开(公告)号：US5559864A
公开(公告)日：1996-09-24
申请号：US460852
申请日：1995-06-05
CPC分类号： H04W24/00 , G08G1/0104 , H04W64/00
摘要： A method for providing emergency information using presently existing cellular telephone system technology. Traffic sensors monitor the control and voice channel transmissions of cellular units within a cellular telephone system for emergency conditions. Data from these transmissions is extracted and analyzed for emergencies according to a statistical model and derived vehicle geolocating information to generate emergency information that is transmitted to a central control center. By combining the information from all of the traffic sensors and each individual cell within a cellular telephone system, a picture of the emergency conditions existing along major thoroughfares may be determined.
摘要翻译： 一种使用现有的蜂窝电话系统技术提供紧急信息的方法。 交通传感器监测蜂窝电话系统内的蜂窝单元的控制和语音信道传输，以用于紧急情况。 根据统计模型和派生的车辆地理定位信息，提取并分析来自这些传输的数据以产生紧急情况以产生发送到中央控制中心的紧急信息。 通过组合来自蜂窝电话系统中的所有交通传感器和每个单独小区的信息，可以确定沿主要通道存在的紧急情况的图片。
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公开(公告)号：US5465289A
公开(公告)日：1995-11-07
申请号：US26568
申请日：1993-03-05
CPC分类号： H04W24/00 , G08G1/0104 , H04W64/00
摘要： A method and apparatus for providing vehicular traffic information using presently existing cellular telephone system technology. Traffic sensors monitor the control and voice channel transmissions of cellular units within a cellular telephone system. Data from these transmissions is extracted and analyzed according to a statistical model and derived vehicle geolocating information to generate vehicular traffic information that is transmitted to a central control center. By combining the information from all of the traffic sensors and each individual cell within a cellular telephone system, a picture of the traffic conditions existing along major thoroughfares may be determined.
摘要翻译： 一种使用现有的蜂窝电话系统技术提供车辆交通信息的方法和装置。 业务传感器监视蜂窝电话系统内的蜂窝单元的控制和语音信道传输。 根据统计模型和派生车辆地理定位信息提取和分析来自这些传输的数据，以产生传输到中央控制中心的车辆交通信息。 通过组合来自蜂窝电话系统中的所有交通传感器和每个单独小区的信息，可以确定沿着主要通道存在的交通状况的图片。
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