公开(公告)号：US08164517B2

公开(公告)日：2012-04-24

申请号：US12091798

申请日：2006-10-28

申请人： Gengsheng Zhang ,  Qingwen Zhang ,  Paul Underbrink

发明人： Gengsheng Zhang ,  Qingwen Zhang ,  Paul Underbrink

IPC分类号： G01S19/09 ,  G01S19/03 ,  G01S19/37

CPC分类号： G01S19/05 ,  G01S19/37

摘要： Satellite positioning system (SATPS) receiver that has a plurality of modes and channels, where a timeline module configures the channels based on the mode of operation of the SATPS receiver and reconfigures the channels if the mode of operation of the SATPS changes.

摘要翻译： 具有多个模式和频道的卫星定位系统（SATPS）接收机，其中时间线模块基于SATPS接收机的操作模式配置信道，并且如果SATPS的操作模式改变则重新配置信道。

公开(公告)号：US07979207B2

公开(公告)日：2011-07-12

申请号：US11687782

申请日：2007-03-19

申请人： Mahesh Chowdhary ,  Qiyue Zhang ,  Mangesh Chansarkar ,  Gengsheng Zhang

发明人： Mahesh Chowdhary ,  Qiyue Zhang ,  Mangesh Chansarkar ,  Gengsheng Zhang

IPC分类号： G01C7/04

CPC分类号： G01C21/12

摘要： Systems and methods for detecting a vehicle static condition are provided. In this regard, a representative system includes a sensor operative to detect at least one of acceleration and angular rate of a vehicle. The sensor is further operative to generate a vehicle vibration profile based on the at least one of the detected acceleration and angular rate of the vehicle. The system further includes a computing device operative to receive the vehicle vibration profile from the sensor, the computing device being further operative to determine whether the vehicle is stationary or moving based on the vehicle vibration profile. A representative method for detecting a vehicle static condition includes detecting at least one of acceleration and angular grade of a vehicle; generating a vehicle vibration profile based on at least one of the detected acceleration and angular grade of the vehicle; receiving the vehicle vibration profile; and determining whether the vehicle is stationary or moving based on the vehicle vibration profile.

摘要翻译： 提供了用于检测车辆静态的系统和方法。 在这方面，代表性系统包括用于检测车辆的加速度和角速度中的至少一个的传感器。 传感器进一步操作以基于所检测的车辆的加速度和角速度中的至少一个来产生车辆振动分布。 该系统还包括可操作以从传感器接收车辆振动分布的计算装置，所述计算装置进一步操作以基于车辆振动分布来确定车辆是静止的还是移动的。 用于检测车辆静态的代表性方法包括检测车辆的加速度和角度等级中的至少一个; 基于所检测的车辆的加速度和角度等级中的至少一个产生车辆振动轮廓; 接收车辆振动剖面; 以及基于车辆振动分布来确定车辆是静止的还是运动的。

公开(公告)号：US07925210B2

公开(公告)日：2011-04-12

申请号：US11205510

申请日：2005-08-16

申请人： Jim Brown ,  Gengsheng Zhang ,  Lionel Garin

发明人： Jim Brown ,  Gengsheng Zhang ,  Lionel Garin

IPC分类号： H04H40/08

CPC分类号： H04B7/2693

摘要： Synchronizing a Radio Network with End User Radio Terminals A Mobile Station that is able to receive GPS signals and compare the frequency of the GPS received time signal with a time signal from a network in order to determine the difference between the signals and communicate that difference back to the network.

摘要翻译： 将无线网络与终端用户无线电终端同步。 能够接收GPS信号并将GPS接收时间信号的频率与来自网络的时间信号进行比较的移动站，以便确定信号之间的差异并将该差异传送回网络。

公开(公告)号：US07839324B2

公开(公告)日：2010-11-23

申请号：US11694653

申请日：2007-03-30

申请人： Makarand S. Phatak ,  Gengsheng Zhang ,  Marlene Wan

发明人： Makarand S. Phatak ,  Gengsheng Zhang ,  Marlene Wan

IPC分类号： G01S1/00

CPC分类号： G01S19/258 ,  G01S19/05

摘要： In one embodiment, a system is provided that is operable to: predict satellite states using historical satellite state data for at least one satellite of a satellite-based positioning system; derive sets of parameters representative of the predicted satellite states; differentially compress the sets parameters into sets of compressed parameters; transmit the sets of compressed parameters to a client device over a first communication channel; uncompress the sets of compressed parameters into sets of recovered parameters; selectively reconstruct at least one reconstructed satellite state in the client device using the sets of recovered parameters; and determine the position of the client device using the at least one reconstructed satellite state along with timing information of satellite data received over a second communication channel.

摘要翻译： 在一个实施例中，提供一种系统，其可操作以：使用基于卫星的定位系统的至少一个卫星的历史卫星状态数据来预测卫星状态; 导出代表预测卫星状态的参数组; 将集参数差分压缩成压缩参数集; 通过第一通信信道将所述压缩参数集发送到客户端设备; 将压缩参数集解压缩为已恢复参数集; 使用所述恢复参数的集合来选择性地重建所述客户端设备中的至少一个重建卫星状态; 以及使用所述至少一个重建的卫星状态以及通过第二通信信道接收的卫星数据的定时信息来确定所述客户端设备的位置。

公开(公告)号：US20080246653A1

公开(公告)日：2008-10-09

申请号：US11696920

申请日：2007-04-05

申请人： Xiangdong Lin ,  Gengsheng Zhang ,  Mangesh Chansarkar ,  Daniel Liao ,  Lionel Garin

发明人： Xiangdong Lin ,  Gengsheng Zhang ,  Mangesh Chansarkar ,  Daniel Liao ,  Lionel Garin

IPC分类号： G01S1/00

CPC分类号： G01S19/42

摘要： A method for GPS navigation which uses an interacting multiple-model (IMM) estimator with a probabilistic data association filter (PDAF) improves navigation performance. The method includes (a) providing two or more models of GPS navigation, with each model characterized by a model state vector which is updated periodically, (b) providing for each model a corresponding filter for deriving, for each period, a current value for the corresponding model state vector based on current measurements made on parameters affecting the corresponding state vector; and (c) applying an interacting multiple model (IMM) estimator to provide, for each period, a current value for a system state vector using the current values of the model state vectors for that period and their corresponding filters. Each model state vector may include one or more of the following: variables: 3-dimensional position, 3-dimensional velocity, satellite clock bias, satellite clock drifts and one or more other satellite parameters. The current value of the system state vector may be a weighted average of the current values of the model state vectors, where the weights are a set of mode probabilities. In addition, one or more of the filters is a probabilitic data association filter (PDAF).

摘要翻译： 使用具有概率数据关联过滤器（PDAF）的交互式多模型（IMM）估计器的GPS导航方法提高了导航性能。 该方法包括（a）提供两个或多个GPS导航模型，每个模型的特征在于周期性更新的模型状态向量，（b）为每个模型提供相应的滤波器，以便为每个周期导出当前值， 基于对影响对应状态向量的参数进行的当前测量的相应模型状态向量; 并且（c）应用交互式多模型（IMM）估计器，以使用该周期的模型状态向量的当前值及其对应的过滤器为每个周期提供系统状态向量的当前值。 每个模型状态向量可以包括以下中的一个或多个：变量：3维位置，3维速度，卫星时钟偏差，卫星时钟漂移和一个或多个其他卫星参数。 系统状态向量的当前值可以是模型状态向量的当前值的加权平均值，其中权重是一组模式概率。 另外，一个或多个过滤器是概率数据关联过滤器（PDAF）。

公开(公告)号：US20080234933A1

公开(公告)日：2008-09-25

申请号：US11687782

申请日：2007-03-19

申请人： Mahesh Chowdhary ,  Qiyue Zhang ,  Mangesh Chansarkar ,  Gengsheng Zhang

发明人： Mahesh Chowdhary ,  Qiyue Zhang ,  Mangesh Chansarkar ,  Gengsheng Zhang

IPC分类号： G01C21/10 ,  G01C21/12

CPC分类号： G01C21/12

摘要： Systems and methods for detecting a vehicle static condition are provided. In this regard, a representative system includes a sensor operative to detect at least one of acceleration and angular rate of a vehicle. The sensor is further operative to generate a vehicle vibration profile based on the at least one of the detected acceleration and angular rate of the vehicle. The system further includes a computing device operative to receive the vehicle vibration profile from the sensor, the computing device being further operative to determine whether the vehicle is stationary or moving based on the vehicle vibration profile. A representative method for detecting a vehicle static condition includes detecting at least one of acceleration and angular grade of a vehicle; generating a vehicle vibration profile based on at least one of the detected acceleration and angular grade of the vehicle; receiving the vehicle vibration profile; and determining whether the vehicle is stationary or moving based on the vehicle vibration profile.

摘要翻译： 提供了用于检测车辆静态的系统和方法。 在这方面，代表性系统包括用于检测车辆的加速度和角速度中的至少一个的传感器。 传感器进一步操作以基于所检测的车辆的加速度和角速度中的至少一个来产生车辆振动分布。 该系统还包括可操作以从传感器接收车辆振动分布的计算装置，所述计算装置进一步操作以基于车辆振动分布来确定车辆是静止的还是移动的。 用于检测车辆静态的代表性方法包括检测车辆的加速度和角度等级中的至少一个; 基于所检测的车辆的加速度和角度等级中的至少一个产生车辆振动轮廓; 接收车辆振动剖面; 以及基于所述车辆振动分布来确定所述车辆是静止的还是移动的。

公开(公告)号：US20080191936A1

公开(公告)日：2008-08-14

申请号：US11694653

申请日：2007-03-30

申请人： Makarand S. Phatak ,  Gengsheng Zhang ,  Marlene Wan

发明人： Makarand S. Phatak ,  Gengsheng Zhang ,  Marlene Wan

IPC分类号： H04B7/185

CPC分类号： G01S19/258 ,  G01S19/05

摘要： In one embodiment, a system is provided that is operable to: predict satellite states using historical satellite state data for at least one satellite of a satellite-based positioning system; derive sets of parameters representative of the predicted satellite states; differentially compress the sets parameters into sets of compressed parameters; transmit the sets of compressed parameters to a client device over a first communication channel; uncompress the sets of compressed parameters into sets of recovered parameters; selectively reconstruct at least one reconstructed satellite state in the client device using the sets of recovered parameters; and determine the position of the client device using the at least one reconstructed satellite state along with timing information of satellite data received over a second communication channel.

摘要翻译： 在一个实施例中，提供一种系统，其可操作以：使用基于卫星的定位系统的至少一个卫星的历史卫星状态数据来预测卫星状态; 导出代表预测卫星状态的参数组; 将集参数差分压缩成压缩参数集; 通过第一通信信道将所述压缩参数集发送到客户端设备; 将压缩参数集解压缩为已恢复参数集; 使用所述恢复参数的集合来选择性地重建所述客户端设备中的至少一个重建卫星状态; 以及使用所述至少一个重建的卫星状态以及通过第二通信信道接收的卫星数据的定时信息来确定所述客户端设备的位置。

公开(公告)号：US20060095206A1

公开(公告)日：2006-05-04

申请号：US10515808

申请日：2003-05-22

申请人： Lionel Garin ,  Leon Peng ,  Gengsheng Zhang ,  Nicolas Vantalon

发明人： Lionel Garin ,  Leon Peng ,  Gengsheng Zhang ,  Nicolas Vantalon

IPC分类号： G01C21/36

CPC分类号： G01S19/256 ,  G01S19/235 ,  G01S19/254

摘要： The invention relates to an aided Global Positioning System (GPS) subsystem within a wireless device. The wireless device includes a wireless processing section capable of receiving signals from a wireless network and a GPS subsystem having a radio frequency (RF) front-end capable of receiving a GPS satellite signal. The wireless processing section of the wireless device receives an external clock and determines the offset between the clock in the wireless processing section and that of the external clock. The GPS subsystem then receives the offset information from the wireless processing section, information related to the nominal frequency of the wireless processing section clock and the wireless processing section clock. Using this information and the GPS clock in the GPS subsystem, the GPS subsystem determines an acquiring signal, which is related to a frequency offset between the GPS clock and the network clock. The GPS subsystem then acquires GPS satellite signals in an acquiring unit though the use of the acquiring signal.

摘要翻译： 本发明涉及无线设备内的辅助全球定位系统（GPS）子系统。 无线设备包括能够从无线网络接收信号的无线处理部分和具有能够接收GPS卫星信号的射频（RF）前端的GPS子系统。 无线装置的无线处理部接收外部时钟并确定无线处理部中的时钟与外部时钟的时钟之间的偏移。 然后，GPS子系统接收来自无线处理部分的偏移信息，与无线处理部分时钟的标称频率和无线处理部分时钟有关的信息。 在GPS子系统中使用该信息和GPS时钟，GPS子系统确定与GPS时钟和网络时钟之间的频率偏移相关的获取信号。 然后，GPS子系统通过使用采集信号在获取单元中获取GPS卫星信号。