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公开(公告)号：US07627333B2
公开(公告)日：2009-12-01
申请号：US11015788
申请日：2004-12-20
IPC分类号： H04W24/00
CPC分类号： H04W64/00
摘要： A method for use in a wireless communication system with a network overlay geolocation system having a sparse deployment network in which base stations of the wireless communication system may or may not have a co-located wireless location sensor (WLS). The method uses U-TDOA measurements on the uplink (reverse) signal and E-OTD measurements on the downlink (forward) signals to estimate a location for a mobile appliance.
摘要翻译： 一种用于具有网络覆盖地理位置系统的无线通信系统的方法，所述网络覆盖地理位置系统具有稀疏部署网络，其中所述无线通信系统的基站可以具有或可以不具有同位置的无线位置传感器（WLS）。 该方法在下行链路（前向）信号上的上行链路（反向）信号和E-OTD测量中使用U-TDOA测量来估计移动设备的位置。
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公开(公告)号：US20080287089A1
公开(公告)日：2008-11-20
申请号：US12123538
申请日：2008-05-20
申请人： Martin Alles
发明人： Martin Alles
IPC分类号： H04B1/16
CPC分类号： H03H7/0153 , H03H7/1725 , H03H7/1791 , H03H2007/013 , H03H2210/015 , H04B1/30
摘要： An input filter is provided for a superheterodyne receiver for image frequency suppression and a method for operating a superheterodyne receiver. The input filter for a superheterodyne receiver includes a first filter circuit with bandpass characteristics and a center frequency that can be preset as a function of a desired receive frequency, the circuit having a varactor diode and a first filter inductor that are connected in parallel and form a parallel-resonant circuit, wherein the center frequency can be preset by application of a control voltage to the varactor diode, and a second filter circuit with band stop characteristics that includes the varactor diode and a second filter inductor, these being connected in series and forming a series-resonant circuit, and that has a maximum attenuation in the vicinity of an image frequency belonging to the desired receive frequency. The input filter may be used in, for example, DAB receivers.
摘要翻译： 为用于图像频率抑制的超外差接收机提供输入滤波器，以及用于操作超外差接收机的方法。 用于超外差接收器的输入滤波器包括具有带通特性的第一滤波器电路和可以作为期望接收频率的函数预设的中心频率，该电路具有并联连接并形成的变容二极管和第一滤波电感器 并联谐振电路，其中可以通过向变容二极管施加控制电压来预设中心频率，以及具有带阻特性的第二滤波器电路，其包括变容二极管和第二滤波电感器，这些电感器串联连接， 形成串联谐振电路，并且在属于所需接收频率的图像频率附近具有最大衰减。 输入滤波器可以用在例如DAB接收机中。
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公开(公告)号：US20080238777A1
公开(公告)日：2008-10-02
申请号：US12122942
申请日：2008-05-19
IPC分类号： G01S3/02
CPC分类号： H04W64/00 , G01S5/021 , G01S5/0268 , H04B1/1081 , H04B7/0848 , H04B7/0854 , H04B7/086 , H04B7/0891 , H04B17/318 , H04L25/0206 , H04W24/00
摘要： A method for enabling a system to enhance the accuracy of a location estimate modifies weights in a weight matrix associated with receiver station measurements in parallel with successive refinements of the location estimate. In a typical location estimation scenario, several receiving stations simultaneously derive measurements of a signal from the emitter. Any one of these measurements is in general some function of the emitter location and the receiving station location. The aggregate of these measurements is often in excess of the minimum number of measurements required to provide an estimate of the emitter location. Where such an excess exists, the method proceeds by modifying the weights associated with the measurements in parallel with successive refinements of the location estimate. The method can be implemented over various cellular protocols with a consistent and significant enhancement in the accuracy of location estimates.
摘要翻译： 一种使系统能够提高位置估计的准确性的方法是与位置估计的连续改进并行地修改与接收机站测量相关联的权重矩阵中的权重。 在典型的位置估计场景中，几个接收站同时导出来自发射器的信号的测量。 这些测量中的任何一个通常是发射器位置和接收站位置的一些功能。 这些测量的总和通常超过提供发射器位置的估计所需的最小测量数量。 在存在这种超量的情况下，该方法通过与位置估计的连续改进并行地修改与测量相关联的权重来进行。 该方法可以通过各种蜂窝协议实现，其中位置估计的准确性具有一致和显着的增强。
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公开(公告)号：US07429951B2
公开(公告)日：2008-09-30
申请号：US10531044
申请日：2003-10-16
IPC分类号： G01S3/02
CPC分类号： H04W64/00 , G01S5/021 , G01S5/0268 , H04B1/1081 , H04B7/0848 , H04B7/0854 , H04B7/086 , H04B7/0891 , H04B17/318 , H04L25/0206 , H04W24/00
摘要： A method for enabling a system to enhance the accuracy of a location estimate modifies weights in a weight matrix associated with receiver station measurements in parallel with successive refinements of the location estimate. In a typical location estimation scenario, several receiving stations simultaneously derive measurements of a signal from the emitter. Any one of these measurements is in general some function of the emitter location and the receiving station location. The aggregate of these measurements is often in excess of the minimum number of measurements required to provide an estimate of the emitter location. Where such an excess exists, the method proceeds by modifying the weights associated with the measurements in parallel with successive refinements of the location estimate. The method can be implemented over various cellular protocols with a consistent and significant enhancement in the accuracy of location estimates.
摘要翻译： 一种使系统能够提高位置估计的准确性的方法是与位置估计的连续改进并行地修改与接收机站测量相关联的权重矩阵中的权重。 在典型的位置估计场景中，几个接收站同时导出来自发射器的信号的测量。 这些测量中的任何一个通常是发射器位置和接收站位置的一些功能。 这些测量的总和通常超过提供发射器位置的估计所需的最小测量数量。 在存在这种超量的情况下，该方法通过与位置估计的连续改进并行地修改与测量相关联的权重来进行。 该方法可以通过各种蜂窝协议实现，其中位置估计的准确性具有一致和显着的增强。
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85.发明授权公开(公告)号：US07379019B2
公开(公告)日：2008-05-27
申请号：US10768687
申请日：2004-02-02
CPC分类号： H04B1/713
摘要： A method for calibrating an antenna and signal processing system enabling angle of arrival (AOA) determination for a frequency hopping signal, in which a calibration coefficient is determined in response to one or more calibration signals injected into the system at one or more of the frequencies in the hopping sequence and proximate in time to reception of the communication signal. The calibration coefficients are reflective of a frequency and time dependent parameter of a path between the antenna and wireless location sensor. The AOA is determined as a function of the calibration coefficient and the radio frequency energy of the received communication signal. Several embodiment of the method are illustrated.
摘要翻译： 一种用于校准天线和信号处理系统的方法，所述天线和信号处理系统使能到达跳频信号的到达角（AOA）确定，其中校准系数是响应于以一个或多个频率注入到系统中的一个或多个校准信号而确定的 在跳频序列中并且在时间上接近通信信号。 校准系数反映了天线和无线位置传感器之间路径的频率和时间相关参数。 AOA被确定为接收到的通信信号的校准系数和射频能量的函数。 示出了该方法的几个实施例。
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