公开(公告)号：US20080009295A1

公开(公告)日：2008-01-10

申请号：US11482102

申请日：2006-07-07

申请人： Nicole Brousseau ,  Geoffrey Colman ,  James S. Wight

发明人： Nicole Brousseau ,  Geoffrey Colman ,  James S. Wight

IPC分类号： H04Q7/20

CPC分类号： H04W64/00

摘要： A high-accuracy method for the geolocation, without the collaboration of the network, of outdoor mobile emitters of a CDMA cellular system, based on the ability to distinguishing between line-of-sight and reflected signals. The method employs time-of-flight and angle-of-arrival information in order to determine whether a signal received by each of two or more interceptors situated at different locations is line-of-sight or reflected. Time-of-flight information is obtained with the aid of the reverse link of a mobile of interest. At those instances in time when the signal received at two or more interceptors is line-of-sight, the location of the mobile can be accurately determined using conventional direction-finding techniques. Since the signal received by an interceptor from a mobile may be very weak, adaptive threshold digital signal processing techniques may be employed to control the probability of detection and the probability of false alarms.

摘要翻译： 基于区分视线和反射信号的能力，用于CDMA蜂窝系统的室外移动发射器的地理定位的高精度方法，而不需要网络协作。 该方法采用飞行时间和到达角度信息，以便确定位于不同位置的两个或多个拦截器中的每一个接收的信号是否是视线或反射。 飞行时间信息是借助于感兴趣的移动台的反向链路获得的。 在两个或更多拦截器处接收到的信号是视线的时间的那些情况下，可以使用常规的寻找技术来精确地确定移动台的位置。 由于来自移动台的拦截器接收到的信号可能非常弱，所以可以采用自适应阈值数字信号处理技术来控制检测的概率和误报的可能性。

公开(公告)号：US4909627A

公开(公告)日：1990-03-20

申请号：US254928

申请日：1988-10-07

申请人： Nicole Brousseau

发明人： Nicole Brousseau

IPC分类号： G01R23/17 ,  G01S3/782

CPC分类号： G01R23/17 ,  G01S3/782

摘要： An improved interferometric spectrum analyser system with direction finding capabilities for an emitting source, the type having a holographic element to provide a laser beam source for the system. The laser beam from the source is focused on a light waveguide within which are arranged in asymetrical configuration with respect to the direction of the laser beam source a plurality of antenna signal transducers and a plurality of reference signal transducer, the antenna signal transducers and the reference signal transducers respectively being arranged in adjacent rows in such a manner as to provide acoustic signals propagating in the same direction within the transducer. A lens assembly is positioned with respect to the light waveguide so as to provide a one-dimensional Fourier transform signal on the X-axis of the waveguide by causing the mixing of the Fourier transform signal of the antenna signal and the Fourier transform signal of the reference signal. The analyser according to the present invention is more compact and less sensitive to vibration than currently available systems.

摘要翻译： 一种具有用于发射源的方向发现能力的改进的干涉测量频谱分析仪系统，该类型具有全息元件以为系统提供激光束源。 来自源的激光束聚焦在光波导上，其中相对于激光束源的方向以多个天线信号换能器和多个参考信号换能器，天线信号换能器和参考 信号传感器分别布置在相邻行中，以便提供在换能器内沿相同方向传播的声信号。 透镜组件相对于光波导定位，以便通过使天线信号的傅立叶变换信号和傅里叶变换信号的混合在波导的X轴上提供一维傅里叶变换信号 参考信号。 根据本发明的分析仪比当前可用的系统更紧凑并且对振动不太敏感。