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1. 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。

2. 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。

3. 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。

4. 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。

5. 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。

6. 发明授权

US07613258B2 Apparatus and method for determining GPS tracking loop parameter based on SNR estimation 有权
标题翻译：基于SNR估计确定GPS跟踪环路参数的装置和方法
公开(公告)号：US07613258B2
公开(公告)日：2009-11-03
申请号：US11364768
申请日：2006-02-28
申请人： Bo Yu , Jianhui Hou , ShiJie Li , MingQiang Cheng
发明人： Bo Yu , Jianhui Hou , ShiJie Li , MingQiang Cheng
IPC分类号： H03D1/04
CPC分类号： H04B1/7097
摘要： A method for estimating signal quality of a spread spectrum signal is provided. The method includes squaring a plurality of in-phase correlation results and a plurality of quadrature correlation results, summing each squared in-phase correlation result and the corresponding correlation result to obtain a plurality of sum-of-square values, detecting a peak value among the plurality of sum-of-square results, calculating an average of non-peak values among the plurality of sum-of-square results. The peak value is regarded as a signal power value, while the averaged non-peak values are regarded as an average noise power value. A signal-to-noise ratio is then calculated based on the signal power value and the average noise power value. A method for determining the parameters for the tracking loop is also provided. The method includes estimating the signal-to-noise ratio of the spread spectrum signal, and determining the tracking loop parameters based on the signal-to-noise ratio.
摘要翻译：提供了一种用于估计扩频信号的信号质量的方法。该方法包括对多个同相相关结果和多个正交相关结果进行平方，对每个平方的同相相关结果和相应的相关结果相加以获得多个平方和值，检测其中的峰值所述多个平方和结果，计算所述多个平方和结果中的非峰值的平均值。将峰值视为信号功率值，而将平均非峰值视为平均噪声功率值。然后基于信号功率值和平均噪声功率值来计算信噪比。还提供了用于确定跟踪环路的参数的方法。该方法包括估计扩频信号的信噪比，以及基于信噪比确定跟踪环路参数。

7. 发明申请

US20070201539A1 Apparatus and method for determining GPS tracking loop parameter based on SNR estimation 有权
标题翻译：基于SNR估计确定GPS跟踪环路参数的装置和方法
公开(公告)号：US20070201539A1
公开(公告)日：2007-08-30
申请号：US11364768
申请日：2006-02-28
申请人： Bo Yu , Jianhui Hou , ShiJie Li , MingQiang Cheng
发明人： Bo Yu , Jianhui Hou , ShiJie Li , MingQiang Cheng
IPC分类号： H04B1/00
CPC分类号： H04B1/7097
摘要： A method for estimating signal quality of a spread spectrum signal is provided. The method includes squaring a plurality of in-phase correlation results and a plurality of quadrature correlation results, summing each squared in-phase correlation result and the corresponding correlation result to obtain a plurality of sum-of-square values, detecting a peak value among the plurality of sum-of-square results, calculating an average of non-peak values among the plurality of sum-of-square results. The peak value is regarded as a signal power value, while the averaged non-peak values are regarded as an average noise power value. A signal-to-noise ratio is then calculated based on the signal power value and the average noise power value. A method for determining the parameters for the tracking loop is also provided. The method includes estimating the signal-to-noise ratio of the spread spectrum signal, and determining the tracking loop parameters based on the signal-to-noise ratio.
摘要翻译：提供了一种用于估计扩频信号的信号质量的方法。该方法包括对多个同相相关结果和多个正交相关结果进行平方，对每个平方的同相相关结果和相应的相关结果相加以获得多个平方和值，检测其中的峰值所述多个平方和结果，计算所述多个平方和结果中的非峰值的平均值。将峰值视为信号功率值，而将平均非峰值视为平均噪声功率值。然后基于信号功率值和平均噪声功率值来计算信噪比。还提供了用于确定跟踪环路的参数的方法。该方法包括估计扩频信号的信噪比，以及基于信噪比确定跟踪环路参数。

8. 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。

9. 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。

10. 发明申请

US20190110776A1 Methods for Computing Coronary Physiology Indexes Using a High Precision Registration Model 审中-公开
公开(公告)号：US20190110776A1
公开(公告)日：2019-04-18
申请号：US16153825
申请日：2018-10-08
申请人： Bo Yu , Haibo Jia , Sining Hu , Jiannan Dai , Lei Xing , Chenyang Xu , Zhao Wang , Shuai Zhang
发明人： Bo Yu , Haibo Jia , Sining Hu , Jiannan Dai , Lei Xing , Chenyang Xu , Zhao Wang , Shuai Zhang
IPC分类号： A61B8/08 , A61B5/00 , A61B8/06 , A61B5/027 , A61B8/12 , A61B6/12 , G06T7/33 , G06T7/70 , G06T7/20 , G06T7/00 , G16H30/20
摘要： This invention describes methods to compute coronary physiology indexes using a high precision registration model, which consists of acquiring coronary angiography images of coronary vessels, performing intravascular imaging, and registering the coronary angiography images with intravascular images to create a high precision registration model, based upon which the coronary flow, fractional flow reserve (FFR) and index of microcirculation resistance (IMR) can be computed. The methods described in this invention to compute coronary flow, FFR, IMR are based on both coronary angiography and intravascular images, and the accuracy is better than those derived from coronary angiography alone or intravascular imaging alone, and have high practical values.

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