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1. 发明申请

US20100332126A1 INERTIAL NAVIGATION SYSTEM WITH ERROR CORRECTION BASED ON NAVIGATION MAP 审中-公开
标题翻译：基于导航地图的误差校正的惯性导航系统
公开(公告)号：US20100332126A1
公开(公告)日：2010-12-30
申请号：US12495454
申请日：2009-06-30
申请人： Haiquan Huang , Xiaoguang Yu , Hongzhang Wang , Bo Yu , Bo Xu , Yongliang Ji , Jun Chen
发明人： Haiquan Huang , Xiaoguang Yu , Hongzhang Wang , Bo Yu , Bo Xu , Yongliang Ji , Jun Chen
IPC分类号： G01C21/26
CPC分类号： G01C21/30
摘要： An inertial navigation system with error correction based on a navigation map is disclosed herein. The inertial navigation system can include a trajectory calculator for calculating a position and an orientation of a moving object based on moving information of the moving object, an error correcting unit coupled to the trajectory calculator for correcting the position and the orientation of the moving object based on reference road information, and a storage unit coupled to the error correcting unit for storing geographical information of a road network and providing the reference road information according to the geographical information of the road network.
摘要翻译：本文公开了一种基于导航图的具有误差校正的惯性导航系统。惯性导航系统可以包括轨迹计算器，用于基于移动物体的移动信息来计算移动物体的位置和姿态;纠错单元，其耦合到轨迹计算器，用于基于移动物体的位置和姿态校正以及存储单元，其耦合到所述误差校正单元，用于存储道路网的地理信息，并根据所述道路网的地理信息提供所述参考道路信息。

2. 发明申请

US20080317099A1 Method and apparatus for signal carrier-to-noise power density ratio caculation 有权
标题翻译：用于信号载波与功率密度比的信号的方法和装置
公开(公告)号：US20080317099A1
公开(公告)日：2008-12-25
申请号：US12151668
申请日：2008-05-08
申请人： Jianhui HOU , Bo YU , Xiaoguang YU , Haiquan HUANG
发明人： Jianhui HOU , Bo YU , Xiaoguang YU , Haiquan HUANG
IPC分类号： H04B1/69
CPC分类号： H04B1/7085 , G01S19/21 , H04B1/7075
摘要： There is provided an apparatus for determining a carrier-to-noise power density ratio (CN0) of a spread spectrum signal. The apparatus includes a signal power calculation unit and a conversion unit. The signal power calculation unit determines a signal power indicator indicative of a signal to noise ratio of the spread spectrum signal. The conversion unit is coupled to the signal power calculation unit and stores a lookup table representing a relationship between the signal power indicator and the carrier-to-noise power density ratio. The conversion unit is operable for converting the signal power indicator to the carrier-to-noise power density ratio according to the lookup table.
摘要翻译：提供了一种用于确定扩频信号的载波噪声功率密度比（CN0）的装置。该装置包括信号功率计算单元和转换单元。信号功率计算单元确定表示扩频信号的信噪比的信号功率指示符。转换单元耦合到信号功率计算单元并存储表示信号功率指示符与载波噪声功率密度比之间的关系的查找表。转换单元可用于根据查找表将信号功率指示符转换为载波噪声功率密度比。

3. 发明申请

US20080191939A1 Methods and apparatus for decreasing time to first fix of GPS receiver 有权
标题翻译：降低GPS接收机首次固定时间的方法和装置
公开(公告)号：US20080191939A1
公开(公告)日：2008-08-14
申请号：US11706790
申请日：2007-02-14
申请人： Xiaoguang Yu , Haiquan Huang
发明人： Xiaoguang Yu , Haiquan Huang
IPC分类号： G01S5/14
CPC分类号： G01S19/24
摘要： The present invention provides a GPS receiver which is capable of computing a local time reference without employing a RTC circuitry and employing a nonvolatile storing unit to store backup navigation data, wherein the local time reference and the backup navigation data can be used to reduce the TTFF of the GPS receiver. The GPS receiver includes a nonvolatile storing unit and a positioning unit. The positioning unit is capable of retrieving the backup navigation data from the nonvolatile storing unit and computing a local time reference after said GPS receiver is powered up. The positioning unit is further capable of employing the backup navigation data and the local time reference to computing the position of the GPS.
摘要翻译：本发明提供一种能够在不使用RTC电路并采用非易失性存储单元来存储备份导航数据的情况下计算本地时间参考的GPS接收机，其中可以使用本地时间参考和备用导航数据来减少TTFF 的GPS接收机。 GPS接收机包括非易失性存储单元和定位单元。定位单元能够从非易失性存储单元检索备份导航数据，并且在所述GPS接收器加电之后计算本地时间基准。定位单元还能够使用备用导航数据和本地时间参考来计算GPS的位置。

4. 发明授权

US08054872B2 Method and apparatus for signal carrier-to-noise power density ratio calculation 有权
标题翻译：信号载波噪声功率密度比计算方法和装置
公开(公告)号：US08054872B2
公开(公告)日：2011-11-08
申请号：US12151668
申请日：2008-05-08
申请人： Jianhui Hou , Bo Yu , Xiaoguang Yu , Haiquan Huang
发明人： Jianhui Hou , Bo Yu , Xiaoguang Yu , Haiquan Huang
IPC分类号： H04B3/46 , H04B17/00 , H04Q1/20
CPC分类号： H04B1/7085 , G01S19/21 , H04B1/7075
摘要： There is provided an apparatus for determining a carrier-to-noise power density ratio (CN0) of a spread spectrum signal. The apparatus includes a signal power calculation unit and a conversion unit. The signal power calculation unit determines a signal power indicator indicative of a signal to noise ratio of the spread spectrum signal. The conversion unit is coupled to the signal power calculation unit and stores a lookup table representing a relationship between the signal power indicator and the carrier-to-noise power density ratio. The conversion unit is operable for converting the signal power indicator to the carrier-to-noise power density ratio according to the lookup table.
摘要翻译：提供了一种用于确定扩频信号的载波噪声功率密度比（CN0）的装置。该装置包括信号功率计算单元和转换单元。信号功率计算单元确定表示扩频信号的信噪比的信号功率指示符。转换单元耦合到信号功率计算单元，并存储表示信号功率指示符与载波噪声功率密度比之间的关系的查找表。转换单元可用于根据查找表将信号功率指示符转换为载波噪声功率密度比。

5. 发明授权

US08378889B2 Calculating navigation system time in a satellite navigation system 有权
标题翻译：计算卫星导航系统中的导航系统时间
公开(公告)号：US08378889B2
公开(公告)日：2013-02-19
申请号：US12415048
申请日：2009-03-31
申请人： Xiaoguang Yu , Sterling Du , Haiquan Huang
发明人： Xiaoguang Yu , Sterling Du , Haiquan Huang
IPC分类号： G01S19/23
CPC分类号： G01S19/235
摘要： A satellite navigation system receiver that includes a counter and a controlling unit is described. The counter may be driven by a reference clock signal having a reference clock frequency. The controlling unit can calculate a correction value indicative of a corrected reference clock frequency by comparing an increment of the counter values during a time period with an increment of the navigation system times during the time period. The controlling unit can generate a calculated navigation system time according to the correction value.
摘要翻译：描述了包括计数器和控制单元的卫星导航系统接收器。计数器可以由具有参考时钟频率的参考时钟信号驱动。控制单元可以通过将时间段内的计数器值的增加与时间段内的导航系统时间的增量进行比较来计算表示校正的基准时钟频率的校正值。控制单元可以根据校正值生成计算出的导航系统时间。

6. 发明申请

US20100073230A1 CALCULATING NAVIGATION SYSTEM TIME IN A SATELLITE NAVIGATION SYSTEM 有权
标题翻译：在卫星导航系统中计算导航系统时间
公开(公告)号：US20100073230A1
公开(公告)日：2010-03-25
申请号：US12415048
申请日：2009-03-31
申请人： Xiaoguang YU , Sterling DU , Haiquan HUANG
发明人： Xiaoguang YU , Sterling DU , Haiquan HUANG
IPC分类号： G01S19/13
CPC分类号： G01S19/235
摘要： A satellite navigation system receiver that includes a counter and a controlling unit is described. The counter may be driven by a reference clock signal having a reference clock frequency. The controlling unit can calculate a correction value indicative of a corrected reference clock frequency by comparing an increment of the counter values during a time period with an increment of the navigation system times during the time period. The controlling unit can generate a calculated navigation system time according to the correction value.
摘要翻译：描述了包括计数器和控制单元的卫星导航系统接收器。计数器可以由具有参考时钟频率的参考时钟信号来驱动。控制单元可以通过将时间段内的计数器值的增加与时间段内的导航系统时间的增量进行比较来计算表示校正的基准时钟频率的校正值。控制单元可以根据校正值生成计算出的导航系统时间。

7. 发明申请

US20100039322A1 Signal Acquisition Systems With Applications Of General Clocks 有权
标题翻译：采用通用时钟的信号采集系统
公开(公告)号：US20100039322A1
公开(公告)日：2010-02-18
申请号：US12541518
申请日：2009-08-14
申请人： Xiaoguang Yu , Yishao Max Huang , Haiquan Huang
发明人： Xiaoguang Yu , Yishao Max Huang , Haiquan Huang
IPC分类号： G01S1/00
CPC分类号： G01S19/35 , G01S19/23
摘要： A global positioning system (GPS) system includes a clock module for providing multiple counter values at multiple time points. The GPS system also includes a system module coupled to the clock module. The system module is capable of obtaining a time value for each time point according to a set of signals from a signal source. The system module is further capable of calculating a set of parameters based on the counter values and the time value for each time point, and determining an estimated time value based on the parameters and a present counter value from the clock module.
摘要翻译：全球定位系统（GPS）系统包括一个时钟模块，用于在多个时间点提供多个计数器值。 GPS系统还包括耦合到时钟模块的系统模块。系统模块能够根据来自信号源的一组信号获得每个时间点的时间值。系统模块还能够基于每个时间点的计数器值和时间值来计算一组参数，并且基于来自时钟模块的参数和当前计数器值来确定估计时间值。

8. 发明申请

US20080317101A1 Method and apparatus for detecting lock status of a GPS signal 有权
标题翻译：用于检测GPS信号的锁定状态的方法和装置
公开(公告)号：US20080317101A1
公开(公告)日：2008-12-25
申请号：US11820807
申请日：2007-06-21
申请人： Xiaoguang Yu , Jianhui Hou , Bo Yu , Haiquan Huang
发明人： Xiaoguang Yu , Jianhui Hou , Bo Yu , Haiquan Huang
IPC分类号： H04B1/707 , G01S1/02
CPC分类号： H04B1/70755 , G01S19/24 , H04B2201/70715
摘要： An apparatus for detecting lock status of a spread spectrum signal, having a first accumulator, a first calculation unit, a second calculation unit, a second accumulator, a multiplier and a comparator. The first accumulator accumulates an in-phase integration result and a quadrature integration result over a time period. The first calculation unit determines a first evaluation value based on the accumulated in-phase integration result and the accumulated quadrature integration result. The second calculation unit processes the in-phase integration result and the quadrature integration result. The second accumulator accumulates the output of the second calculation unit over the time period. The multiplier determines a second evaluation value by multiplying the accumulated result from the second accumulator with a predetermined value. The comparator compares the first and second evaluation results wherein the comparison result is an indicator of the lock status.
摘要翻译：一种用于检测扩频信号的锁定状态的装置，具有第一累加器，第一计算单元，第二计算单元，第二累加器，乘法器和比较器。第一个累加器在一段时间内积累同相积分结果和正交积分结果。第一计算单元基于累积的同相积分结果和积分正交积分结果来确定第一评估值。第二计算单元处理同相积分结果和正交积分结果。第二累加器在该时间段内积累第二计算单元的输出。乘法器通过将来自第二累加器的累加结果乘以预定值来确定第二评估值。比较器比较第一和第二评估结果，其中比较结果是锁定状态的指标。

9. 发明授权

US07446700B2 Methods and apparatus for decreasing time to first fix of GPS receiver 有权
公开(公告)号：US07446700B2
公开(公告)日：2008-11-04
申请号：US11706790
申请日：2007-02-14
申请人： Xiaoguang Yu , Haiquan Huang
发明人： Xiaoguang Yu , Haiquan Huang
IPC分类号： G01S5/14
CPC分类号： G01S19/24
摘要： The present invention provides a GPS receiver which is capable of computing a local time reference without employing a RTC circuitry and employing a nonvolatile storing unit to store backup navigation data, wherein the local time reference and the backup navigation data can be used to reduce the TTFF of the GPS receiver. The GPS receiver includes a nonvolatile storing unit and a positioning unit. The positioning unit is capable of retrieving the backup navigation data from the nonvolatile storing unit and computing a local time reference after said GPS receiver is powered up. The positioning unit is further capable of employing the backup navigation data and the local time reference to computing the position of the GPS.

10. 发明授权

US08154449B2 Signal acquisition systems with applications of general clocks 有权
标题翻译：采用通用时钟的信号采集系统
公开(公告)号：US08154449B2
公开(公告)日：2012-04-10
申请号：US12541518
申请日：2009-08-14
申请人： Xiaoguang Yu , Yishao Max Huang , Haiquan Huang
发明人： Xiaoguang Yu , Yishao Max Huang , Haiquan Huang
IPC分类号： G01S19/36 , G01S19/24
CPC分类号： G01S19/35 , G01S19/23
摘要： A global positioning system (GPS) system includes a clock module for providing multiple counter values at multiple time points. The GPS system also includes a system module coupled to the clock module. The system module is capable of obtaining a time value for each time point according to a set of signals from a signal source. The system module is further capable of calculating a set of parameters based on the counter values and the time value for each time point, and determining an estimated time value based on the parameters and a present counter value from the clock module.
摘要翻译：全球定位系统（GPS）系统包括一个时钟模块，用于在多个时间点提供多个计数器值。 GPS系统还包括耦合到时钟模块的系统模块。系统模块能够根据来自信号源的一组信号获得每个时间点的时间值。系统模块还能够基于每个时间点的计数器值和时间值来计算一组参数，并且基于来自时钟模块的参数和当前计数器值来确定估计时间值。

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