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公开(公告)号：US07764726B2
公开(公告)日：2010-07-27
申请号：US11291173
申请日：2005-11-30
IPC分类号： H04B1/00
摘要： A method according to an embodiment obtains a list of peaks for each of a number of frequency hypotheses. Each peak has an energy result and corresponds to a code phase hypothesis. Embodiments include methods and apparatus that may be used in identifying a location of a signal (such as a GPS signal) in a two-dimensional search space. Location information may be further applied to operations such as signal acquisition, signal tracking, position location of a receiver, and timing operations such as the synchronization of one or more other processes.
摘要翻译： 根据实施例的方法获得多个频率假设中的每一个的峰值列表。 每个峰值具有能量结果，并对应于码相位假设。 实施例包括可用于识别二维搜索空间中的信号（例如GPS信号）的位置的方法和装置。 位置信息可以进一步应用于诸如信号获取，信号跟踪，接收机的位置定位等操作，以及诸如一个或多个其他过程的同步的定时操作。
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公开(公告)号：US20070066268A1
公开(公告)日：2007-03-22
申请号：US11430613
申请日：2006-05-08
IPC分类号： H04B1/26
CPC分类号： G01S19/235 , H04B1/26
摘要： A receiver according to one embodiment includes a frequency control unit configured to receive a stream of samples including a plurality of received instances of a transmitted signal. The frequency control unit is configured to output a first correction signal (e.g. indicating a rotation) that is based on more than one of the received instances and a second correction signal (e.g. to control an oscillator) that is also based on more than one of the received instances. In some embodiments, a controlled oscillator is used to receive and/or transmit another signal, such as a signal received from a GPS space vehicle. In other embodiments, the received instances are from a GPS signal. In further embodiments, a fixed-frequency oscillator is used, and the second correction signal is used to receive and/or transmit another signal, such as a GPS signal.
摘要翻译： 根据一个实施例的接收机包括：频率控制单元，被配置为接收包括发射信号的多个接收的实例的样本流。 频率控制单元被配置为输出基于多于一个接收到的实例的第一校正信号（例如指示旋转）和还基于多个接收实例中的多于一个的第二校正信号（例如，以控制振荡器） 接收的实例。 在一些实施例中，受控振荡器用于接收和/或发送另一信号，例如从GPS空中交通工具接收的信号。 在其他实施例中，所接收的实例是来自GPS信号。 在另外的实施例中，使用固定频率振荡器，并且第二校正信号用于接收和/或发送诸如GPS信号的另一信号。
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公开(公告)号：US07016688B2
公开(公告)日：2006-03-21
申请号：US10435237
申请日：2003-05-09
IPC分类号： H04Q7/20
CPC分类号： H04W64/00 , G01S5/0226 , G01S5/0273 , G01S5/10 , G01S19/09 , G01S19/11 , G01S19/46 , H04B7/155 , H04B7/2606
摘要： A forward link repeater delay watermarking (FLRDWM) system and method that enable accurate position location of mobile stations in areas where repeaters are present by watermarking repeated signals with repeater information. A repeater watermarks a forward link signal with a (unique or non-unique) time delay modulation waveform watermark every time a signal passes through the repeater. A mobile station detects and/or identifies the time delay watermark on the forward link signal to determine repeater information that aids the network position determination entity or mobile station position location system in determining position location using AFLT and/or A-GPS systems. A forward link time delay watermarking system can be implemented to achieve low impact on FL and AFLT performance, favorable detection and identification probabilities, and short time-to-detect/identify.
摘要翻译： 一种前向链路中继器延迟水印（FLRDWM）系统和方法，其通过对具有中继器信息的重复信号进行水印来实现移动站在存在中继器的区域中的准确位置定位。 中继器每当信号通过中继器时对具有（唯一或非唯一）时间延迟调制波形水印的前向链路信号进行水印。 移动台在前向链路信号上检测和/或识别时间延迟水印，以确定使用AFLT和/或A-GPS系统帮助网络位置确定实体或移动台位置系统确定位置定位的中继器信息。 可以实现前向链路时间延迟水印系统，以实现对FL和AFLT性能的低影响，良好的检测和识别概率，以及短时间的检测/识别。
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公开(公告)号：US20060222058A1
公开(公告)日：2006-10-05
申请号：US11291173
申请日：2005-11-30
IPC分类号： H04B1/00
摘要： A method according to an embodiment obtains a list of peaks for each of a number of frequency hypotheses. Each peak has an energy result and corresponds to a code phase hypothesis. Embodiments include methods and apparatus that may be used in identifying a location of a signal (such as a GPS signal) in a two-dimensional search space. Location information may be further applied to operations such as signal acquisition, signal tracking, position location of a receiver, and timing operations such as the synchronization of one or more other processes.
摘要翻译： 根据实施例的方法获得多个频率假设中的每一个的峰值列表。 每个峰值具有能量结果，并对应于码相位假设。 实施例包括可用于识别二维搜索空间中的信号（例如GPS信号）的位置的方法和装置。 位置信息可以进一步应用于诸如信号获取，信号跟踪，接收机的位置定位等操作，以及诸如一个或多个其他过程的同步的定时操作。
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5.发明授权Method and apparatus for optimizing GPS-based position location in presence of time varying frequency error 失效在存在时变频率误差的情况下优化基于GPS的位置定位的方法和装置公开(公告)号：US06903684B1
公开(公告)日：2005-06-07
申请号：US10404711
申请日：2003-03-31
CPC分类号： G01S19/235
摘要： Position determination accuracy of a wireless communication device may be negatively affected by a large unaccounted GPS doppler bias, which in turn may affect GPS doppler estimations and GPS doppler measurements conducted by the wireless communication device. The quality of GPS doppler measurements is very important for position location, because poor quality GPS doppler measurements may prevent the wireless communication device from acquiring satellites in the most sensitive modes with narrow frequency ranges, which results in reduced GPS pseudorange measurement yield. Large unaccounted GPS doppler bias also adversely affects position accuracy because of the adverse effect on the GPS code phase measurements time propagation to common time prior to their use in position location calculation. The same is true in the case of unaccounted CDMA code doppler, through the adverse effect on the AFLT code phase measurements time propagation to common time prior to their use in a position location engine. This effect is the biggest concern in the case of large search windows. Therefore, the present disclosure provides a method of optimizing GPS based position location in the presence of time-varying frequency error, including the steps of continuously measuring and/or calculating resulting GPS doppler bias and CDMA code doppler bias and then minimizing their adverse effects with regard to position location determination by re-centering GPS doppler search windows based on the GPS doppler bias value, as well as using GPS doppler bias and CDMA code doppler bias value to properly propagate GPS pseudorange and AFLT pilot phase measurements, respectively, to common time prior to their use in a position location engine.
摘要翻译： 无线通信设备的位置确定精度可能受到大量未计数的GPS多普勒偏倚的负面影响，这又可能影响由无线通信设备进行的GPS多普勒估计和GPS多普勒测量。 GPS多普勒测量的质量对于位置定位是非常重要的，因为差的质量GPS多普勒测量可能会阻止无线通信设备采集具有较窄频率范围的最敏感模式的卫星，这导致GPS伪距测量产量的降低。 由于对GPS码相位测量时间的传播对其在位置位置计算中使用之前的公共时间的不利影响，大量未计数的GPS多普勒偏置也会对位置精度产生不利影响。 在没有计算的CDMA码多普勒的情况下也是这样，通过对AFLT码相位测量时间传播的不利影响，在它们在位置定位引擎中使用之前的公共时间。 这种效果是大型搜索窗口最大的问题。 因此，本公开提供了一种在存在时变频率误差的情况下优化基于GPS的位置定位的方法，包括以下步骤：连续测量和/或计算所得到的GPS多普勒偏差和CDMA码多普勒偏差，然后将其不利影响最小化 考虑到基于GPS多普勒偏置值重新定位GPS多普勒搜索窗口的位置定位，以及使用GPS多普勒偏差和CDMA码多普勒偏置值分别适当地将GPS伪距和AFLT导频相位测量传播到常见时间 在使用位置引擎之前。
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公开(公告)号：US08213487B2
公开(公告)日：2012-07-03
申请号：US12843605
申请日：2010-07-26
IPC分类号： H04B1/00
摘要： A method according to an embodiment obtains a list of peaks for each of a number of frequency hypotheses. Each peak has an energy result and corresponds to a code phase hypothesis. Embodiments include methods and apparatus that may be used in identifying a location of a signal (such as a GPS signal) in a two-dimensional search space. Location information may be further applied to operations such as signal acquisition, signal tracking, position location of a receiver, and timing operations such as the synchronization of one or more other processes.
摘要翻译： 根据实施例的方法获得多个频率假设中的每一个的峰值列表。 每个峰值具有能量结果，并对应于码相位假设。 实施例包括可用于识别二维搜索空间中的信号（例如GPS信号）的位置的方法和装置。 位置信息可以进一步应用于诸如信号获取，信号跟踪，接收机的位置定位等操作，以及诸如一个或多个其他过程的同步的定时操作。
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公开(公告)号：US20100316095A1
公开(公告)日：2010-12-16
申请号：US12843605
申请日：2010-07-26
IPC分类号： H04B1/00
摘要： A method according to an embodiment obtains a list of peaks for each of a number of frequency hypotheses. Each peak has an energy result and corresponds to a code phase hypothesis. Embodiments include methods and apparatus that may be used in identifying a location of a signal (such as a GPS signal) in a two-dimensional search space. Location information may be further applied to operations such as signal acquisition, signal tracking, position location of a receiver, and timing operations such as the synchronization of one or more other processes.
摘要翻译： 根据实施例的方法获得多个频率假设中的每一个的峰值列表。 每个峰值具有能量结果，并对应于码相位假设。 实施例包括可用于识别二维搜索空间中的信号（例如GPS信号）的位置的方法和装置。 位置信息可以进一步应用于诸如信号获取，信号跟踪，接收机的位置定位等操作，以及诸如一个或多个其他过程的同步的定时操作。
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公开(公告)号：US06961367B2
公开(公告)日：2005-11-01
申请号：US10392442
申请日：2003-03-17
申请人： Emilija Simic , Christopher Patrick
发明人： Emilija Simic , Christopher Patrick
CPC分类号： H04B7/2606 , G01S5/0226 , G01S5/0273 , G01S19/256 , G01S19/258 , G01S19/46 , H04B7/155
摘要： A forward link repeater frequency watermarking (FLRFWM) system and method that enable accurate position location of mobile stations in areas where repeaters are present by watermarking repeated signals with repeater information. A repeater watermarks a forward link signal with a (unique or non-unique) fast frequency modulation waveform watermark every time a signal passes through the repeater. A mobile station detects and/or identifies the fast frequency watermark on the forward link signal to determine repeater information that aids the network position determination entity or mobile station position location system in determining position location using AFLT and/or A-GPS systems. A forward link fast frequency watermarking system described herein achieves minimal impact on FL, AFLT, and GPS performance, good detection, identification and false alarm probabilities, short time-to-detect/identify, and good detection/identification sensitivity.
摘要翻译： 一种前向链路中继器频率水印（FLRFWM）系统和方法，其通过对具有中继器信息的重复信号进行水印来实现移动站在存在中继器的区域中的准确位置定位。 中继器每当信号通过中继器时，对具有（唯一或非唯一）快速频率调制波形水印的前向链路信号进行水印。 移动台在前向链路信号上检测和/或识别快速频率水印，以确定使用AFLT和/或A-GPS系统来帮助网络位置确定实体或移动台位置系统确定位置定位的中继器信息。 这里描述的前向链路快速水印系统对FL，AFLT和GPS性能，良好的检测，识别和假警报概率，短时间检测/识别以及良好的检测/识别灵敏度的影响最小。
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公开(公告)号：US08139685B2
公开(公告)日：2012-03-20
申请号：US11430613
申请日：2006-05-08
IPC分类号： H04L27/00
CPC分类号： G01S19/235 , H04B1/26
摘要： A receiver according to one embodiment includes a frequency control unit configured to receive a stream of samples including a plurality of received instances of a transmitted signal. The frequency control unit is configured to output a first correction signal (e.g. indicating a rotation) that is based on more than one of the received instances and a second correction signal (e.g. to control an oscillator) that is also based on more than one of the received instances. In some embodiments, a controlled oscillator is used to receive and/or transmit another signal, such as a signal received from a GPS space vehicle. In other embodiments, the received instances are from a GPS signal. In further embodiments, a fixed-frequency oscillator is used, and the second correction signal is used to receive and/or transmit another signal, such as a GPS signal.
摘要翻译： 根据一个实施例的接收机包括：频率控制单元，被配置为接收包括发射信号的多个接收的实例的样本流。 频率控制单元被配置为输出基于多于一个接收到的实例的第一校正信号（例如指示旋转）和还基于多个接收实例中的多于一个的第二校正信号（例如，以控制振荡器） 接收的实例。 在一些实施例中，受控振荡器用于接收和/或发送另一信号，例如从GPS空中交通工具接收的信号。 在其他实施例中，所接收的实例来自GPS信号。 在另外的实施例中，使用固定频率振荡器，并且第二校正信号用于接收和/或发送诸如GPS信号的另一信号。
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公开(公告)号：US20110050496A1
公开(公告)日：2011-03-03
申请号：US12574625
申请日：2009-10-06
申请人： Jie Wu , Emilija Simic
发明人： Jie Wu , Emilija Simic
IPC分类号： G01S19/37
CPC分类号： G01S19/30 , H04B1/7085 , H04B1/7087 , H04B2201/70715
摘要： Methods and apparatus are provided for use in devices enabled to perform waveform correlation processing of satellite positioning system (SPS) signals, including peak reconstruction.
摘要翻译： 提供的方法和装置用于能够执行卫星定位系统（SPS）信号的波形相关处理的装置，包括峰值重建。
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