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1. 发明授权

US08149164B2 System for demodulating navigation bits from satellite signals 有权
标题翻译：用于从卫星信号中解调导航位的系统
公开(公告)号：US08149164B2
公开(公告)日：2012-04-03
申请号：US12650154
申请日：2009-12-30
申请人： Xiaoguang Yu , Haiquan Huang , Jinghua Zou , Lin Li , Bo Yu , Weihua Zhang , Lie Lu
发明人： Xiaoguang Yu , Haiquan Huang , Jinghua Zou , Lin Li , Bo Yu , Weihua Zhang , Lie Lu
IPC分类号： G01S19/37
CPC分类号： G01S19/24
摘要： A signal processing system for demodulating navigation bits from a satellite signal is disclosed herein. The signal processing system includes a digital baseband processor for determining a boundary between two navigation bits in the navigation bits according to a first plurality of coarse acquisition (C/A) codes captured from the satellite signals, storing the first plurality of C/A codes, and demodulating a second plurality of C/A codes captured after determining the boundary to recover a first series of the navigation bits. The signal processing system further includes a complementary demodulating unit coupled to the digital baseband processor for demodulating the first plurality of C/A codes to recover a second series of the navigation bits.
摘要翻译：本文公开了一种用于从卫星信号解调导航比特的信号处理系统。信号处理系统包括数字基带处理器，用于根据从卫星信号捕获的第一多个粗略采集（C / A）码来确定导航比特中两个导航比特之间的边界，存储第一多个C / A码并且解调在确定所述边界之后捕获的第二多个C / A码，以恢复所述导航比特的第一系列。信号处理系统还包括一个互补解调单元，耦合到数字基带处理器，用于解调第一多个C / A码，以恢复第二系列导航位。

2. 发明授权

US08035559B2 Global positioning system receiver 有权
标题翻译：全球定位系统接收机
公开(公告)号：US08035559B2
公开(公告)日：2011-10-11
申请号：US12156226
申请日：2008-05-30
申请人： Xiaoguang Yu , Haiquan Huang , Jinghua Zou
发明人： Xiaoguang Yu , Haiquan Huang , Jinghua Zou
IPC分类号： G01S19/27
CPC分类号： G01S19/27
摘要： A GPS receiver includes a demodulator for obtaining ephemeris data and almanac data from a navigation message sent by satellites, and includes a calculator. The calculator is used for calculating almanac correction parameters according to coordinate differences between ephemeris-based coordinates of the satellites and almanac-based coordinates of the satellites. The GPS receiver also includes a satellite position calculator for calculating the ephemeris-based coordinates of the satellites according to the ephemeris data, for calculating the almanac-based coordinates of the satellites according to the almanac data, and for calculating positions of the satellites according to the ephemeris data, the almanac data and the almanac correction parameters.
摘要翻译： GPS接收机包括用于从由卫星发送的导航消息中获取星历数据和历书数据的解调器，并包括计算器。计算器用于根据卫星的基于星历的坐标和卫星的基于历书的坐标之间的坐标差来计算历书校正参数。 GPS接收机还包括卫星位置计算器，用于根据星历数据计算卫星的基于星历的坐标，用于根据年历数据计算卫星的基于历书的坐标，并且根据根据日历数据计算卫星的位置星历数据，年历数据和历书校正参数。

3. 发明申请

US20090295634A1 Global positioning system receiver 有权
标题翻译：全球定位系统接收机
公开(公告)号：US20090295634A1
公开(公告)日：2009-12-03
申请号：US12156226
申请日：2008-05-30
申请人： Xiaoguang Yu , Haiquan Huang , Jinghua Zou
发明人： Xiaoguang Yu , Haiquan Huang , Jinghua Zou
IPC分类号： G01S1/00
CPC分类号： G01S19/27
摘要： A GPS receiver includes a demodulator for obtaining ephemeris data and almanac data from a navigation message sent by satellites, and includes a calculator. The calculator is used for calculating almanac correction parameters according to coordinate differences between ephemeris-based coordinates of the satellites and almanac-based coordinates of the satellites. The GPS receiver also includes a satellite position calculator for calculating the ephemeris-based coordinates of the satellites according to the ephemeris data, for calculating the almanac-based coordinates of the satellites according to the almanac data, and for calculating positions of the satellites according to the ephemeris data, the almanac data and the almanac correction parameters.
摘要翻译： GPS接收机包括用于从由卫星发送的导航消息中获取星历数据和历书数据的解调器，并包括计算器。计算器用于根据卫星的基于星历的坐标和卫星的基于历书的坐标之间的坐标差来计算历书校正参数。 GPS接收机还包括卫星位置计算器，用于根据星历数据计算卫星的基于星历的坐标，用于根据年历数据计算卫星的基于历书的坐标，并且根据根据日历数据计算卫星的位置星历数据，年历数据和历书校正参数。

4. 发明申请

US20100328150A1 NAVIGATION SYSTEM WITH ERROR-DETECTION ON DOPPLER FREQUENCIES OF SATELLITE SIGNALS 有权
标题翻译：卫星信号多普勒频率误差检测系统
公开(公告)号：US20100328150A1
公开(公告)日：2010-12-30
申请号：US12792723
申请日：2010-06-02
申请人： Xiaoguang Yu , Bo Yu , Xiaoyong He , Jinghua Zou
发明人： Xiaoguang Yu , Bo Yu , Xiaoyong He , Jinghua Zou
IPC分类号： G01S19/20
CPC分类号： G01S19/20
摘要： A navigation system for detecting error on Doppler frequencies of a plurality of satellite signals measured by the navigation system is disclosed herein. The navigation system includes an offset calculator for calculating offsets of the Doppler frequencies of the satellite signals during a predetermined time period and calculating an average value of the offsets. The navigation system further includes an error detecting unit coupled to the offset calculator. The error detecting unit compares the offsets of the Doppler frequencies of the satellite signals with the average value of the offsets and determines whether the satellite signals are unavailable according to corresponding comparison results.
摘要翻译：本文公开了一种用于检测由导航系统测量的多个卫星信号的多普勒频率误差的导航系统。导航系统包括：偏移计算器，用于在预定时间周期内计算卫星信号的多普勒频率的偏移量，并计算偏移量的平均值。导航系统还包括耦合到偏移计算器的错误检测单元。误差检测单元将卫星信号的多普勒频率的偏移与偏移的平均值进行比较，并根据相应的比较结果确定卫星信号是否不可用。

5. 发明授权

US08072378B2 Navigation system with error-detection on doppler frequencies of satellite signals 有权
标题翻译：具有卫星信号多普勒频率误差检测的导航系统
公开(公告)号：US08072378B2
公开(公告)日：2011-12-06
申请号：US12792723
申请日：2010-06-02
申请人： Xiaoguang Yu , Bo Yu , Xiaoyong He , Jinghua Zou
发明人： Xiaoguang Yu , Bo Yu , Xiaoyong He , Jinghua Zou
IPC分类号： G01S19/28 , G01S19/20
CPC分类号： G01S19/20
摘要： A navigation system for detecting error on Doppler frequencies of a plurality of satellite signals measured by the navigation system is disclosed herein. The navigation system includes an offset calculator for calculating offsets of the Doppler frequencies of the satellite signals during a predetermined time period and calculating an average value of the offsets. The navigation system further includes an error detecting unit coupled to the offset calculator. The error detecting unit compares the offsets of the Doppler frequencies of the satellite signals with the average value of the offsets and determines whether the satellite signals are unavailable according to corresponding comparison results.
摘要翻译：本文公开了一种用于检测由导航系统测量的多个卫星信号的多普勒频率误差的导航系统。导航系统包括：偏移计算器，用于在预定时间周期内计算卫星信号的多普勒频率的偏移量，并计算偏移量的平均值。导航系统还包括耦合到偏移计算器的错误检测单元。误差检测单元将卫星信号的多普勒频率的偏移与偏移的平均值进行比较，并根据相应的比较结果确定卫星信号是否不可用。

6. 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。

7. 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。

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

US07869485B2 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：US07869485B2
公开(公告)日：2011-01-11
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： H04B1/00
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。

10. 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。

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