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1. 发明公开

EP4009082A1 APPARATUS AND METHOD FOR DEMODULATING CODE SHIFT KEYING DATA FROM A SATELLITE SIGNAL UTILIZING A BINARY SEARCH 审中-公开
公开(公告)号：EP4009082A1
公开(公告)日：2022-06-08
申请号：EP21200182.0
申请日：2019-08-23
申请人： Novatel, Inc.
发明人： BROWN, David , FENTON, Patrick C.
IPC分类号： G01S19/24 , H04B1/7073
摘要： A Global Navigation Satellite System (GNSS) receiver demodulates code shift keying (CSK) data utilizing a binary search. The GNSS receiver receives a signal including a pseudorandom noise (PRN) code modulated by code shift keying (CSK) to represent a symbol (i.e., CSK modulated symbol). The GNSS receiver maintains a plurality of receiver codes each representing a different shift in chips to the PRN code. The GNSS receiver performs a linear combination of portions of the receiver codes. In an embodiment, the GNSS receiver compares correlation power level value for respective portions of the receiver codes to demodulate the CSK data. In a further embodiment, the GNSS receiver compares the correlation power level values for portions of receiver codes with power detection threshold values to demodulate the CSK data. In a further embodiment, the GNSS receiver utilizes signs of the correlation power level values to demodulate the CSK data.

2. 发明公开

EP3961265A1 SYSTEM AND METHOD FOR DEMODULATING CODE SHIFT KEYING DATA UTILIZING CORRELATIONS WITH COMBINATIONAL PRN CODES GENERATED FOR DIFFERENT BIT POSITIONS 审中-公开
公开(公告)号：EP3961265A1
公开(公告)日：2022-03-02
申请号：EP21197352.4
申请日：2019-08-21
申请人： Novatel, Inc.
发明人： BROWN, David , FENTON, Patrick C.
IPC分类号： G01S19/24 , G01S19/37
摘要： An apparatus comprising a processor coupled to a memory, the processor configured to:
generate a combinational code based on a chip-by-chip summation of a first selected number of a plurality of receiver codes and a chip-by-chip subtraction of a second selected number of the plurality of receiver codes, wherein each of the plurality of receiver codes is a different shift in chips to a predetermined code;
correlate a received satellite signal with the combinational code to produce a power correlation value, in particular wherein the received satellite signal is a L6 satellite signal received from a Global Navigation Satellite Signal (GNSS) satellite associated with a Quasi-Zenith Satellite System (QZSS);
determine that the received satellite signal is present for demodulation in response to the power correlation value being greater than a threshold value; and
determine that the received satellite signal is lost in response to the power correlation value being less than or equal to the threshold value.

3. 发明公开

EP3926301A1 SYSTEM AND METHOD FOR DEAD RECKONING FOR MARINE POSITIONING APPLICATIONS 审中-实审
公开(公告)号：EP3926301A1
公开(公告)日：2021-12-22
申请号：EP21176082.2
申请日：2021-05-26
申请人： NovAtel Inc.
发明人： BOBYE, Michael
IPC分类号： G01C21/16
摘要： A system and method for dead reckoning for marine positioning applications is provided. After INS mechanization, an exponential moving average (EMA) velocity is calculated that is used to generate an update for a Kalman filter. The use of the EMA velocity allows the system to limit position error in a linear fashion while being self-contained.

4. 发明公开

EP3904913A1 SYSTEM AND METHOD FOR DETECTING SPOOFING OF GLOBAL NAVIGATION SATELLITE SYSTEM SIGNALS USING A PLURALITY OF ANTENNAS 审中-公开
公开(公告)号：EP3904913A1
公开(公告)日：2021-11-03
申请号：EP21171475.3
申请日：2021-04-30
申请人： Novatel, Inc.
发明人： BROUMANDAN, Ali
IPC分类号： G01S19/21
摘要： A system and method for detecting spoofing of a Global Navigation Satellite System (GNSS) system using a plurality of antennas. Signals received by at least two of the plurality of antennas are authentication by use of one or more of a carrier phase authentication procedure, a signal power authentication procedure, and/or a channel distortion authentication procedure.

5. 发明公开

EP3646408A1 SINGLE-LAYER PATCH ANTENNA 有权转让
公开(公告)号：EP3646408A1
公开(公告)日：2020-05-06
申请号：EP18824379.4
申请日：2018-03-08
申请人： Novatel, Inc.
发明人： YANG, Ning
IPC分类号： H01Q1/38 , H01Q1/50 , H01Q9/04 , H01Q9/28

6. 发明公开

EP3455905A1 STACKED PATCH ANTENNAS USING DIELECTRIC SUBSTRATES WITH PATTERNED CAVITIES 有权转让
公开(公告)号：EP3455905A1
公开(公告)日：2019-03-20
申请号：EP17795212.4
申请日：2017-01-10
申请人： Novatel, Inc.
发明人： YANG, Ning
IPC分类号： H01Q1/38 , H01Q9/04 , H05K1/03 , H05K3/42 , G01S19/36

7. 发明公开

EP3385671A1 A NAVIGATION SYSTEM UTILIZING YAW RATE CONSTRAINT DURING INERTIAL DEAD RECKONING 审中-公开
公开(公告)号：EP3385671A1
公开(公告)日：2018-10-10
申请号：EP18150408.5
申请日：2018-01-05
申请人： Novatel, Inc.
发明人： BOBYE, Michael
IPC分类号： G01C21/16 , G01S5/00
CPC分类号： G01C21/18 , G01C21/165 , G01C25/005 , G01S5/00 , G01S19/47
摘要： A system operating in a dead reckoning mode accumulates relative yaw measurements, i.e., measurements of rotation about a z-axis, made by one or more over mechanization update intervals and produces dead reckoning mechanization update values. The system accumulates the values over a turn rate accumulation period, calculates a yaw rate and determines if the yaw rate exceeds a turn rate threshold. If so, the system directs an INS filter to perform a zero yaw rate update at the start of a next mechanization update interval, to correct for the z-axis drift errors of the gyroscopes based on the sensed rotation in the relative yaw measurements over the previous mechanization update interval. The system then sets the z-axis drift errors to zero. If the system determines that the yaw rate exceeds the turn rate threshold, the zero yaw rate update is not performed at the start of the next mechanization update interval.

8. 发明公开

EP3060943A4 IMPROVED SYSTEM FOR POST PROCESSING GNSS/INS MEASUREMENT DATA AND CAMERA IMAGE DATA 有权
标题翻译： VERBESSERTES系统ZUR NACHBEARBEITUNG VON GNSS / INS-MESSDATEN UND KAMERABILDDATEN
公开(公告)号：EP3060943A4
公开(公告)日：2017-06-21
申请号：EP14854964
申请日：2014-10-23
申请人： NOVATEL INC
发明人： ROESLER GREGORY J
IPC分类号： G01S19/39 , G01C21/16 , G01S19/14 , G01S19/40 , G01S19/49 , G01S19/52
CPC分类号： G01C21/165 , G01S19/13 , G01S19/14 , G01S19/39 , G01S19/40 , G01S19/49 , G01S19/52
摘要： A system for performing post processing of GNSS and INS measurement data and image data to provide highly accurate location information for a camera, an INS measurement unit or both performs first processing operations using the GNSS and INS measurement data, to determine position, velocity and attitude solutions. The system then analyzes the solutions to determine which measurement data provide sufficiently reliable solutions from which to determine the precise position, velocity and attitude of the camera, and thus, which measurement data do not provide sufficiently reliable solutions. The system and method then performs more time consuming and processing intensive processing operations using the measurement data and camera image data that are associated with solutions that are not sufficiently reliable.
摘要翻译：用于执行GNSS和INS测量数据和图像数据的后处理以为照相机，INS测量单元或两者提供高度精确的位置信息的系统使用GNSS和INS测量数据执行第一处理操作，以确定位置，速度和姿态解决方案。系统然后分析解决方案，以确定哪些测量数据提供足够可靠的解决方案，从中确定相机的精确位置，速度和姿态，从而确定哪些测量数据不能提供足够可靠的解决方案。该系统和方法然后使用与不够可靠的解决方案相关联的测量数据和相机图像数据执行更耗时且处理密集的处理操作。

9. 发明授权

EP2628211B1 MULTI-QUADRIFILAR HELIX ANTENNA FED WITH INFINITE BALUN 有权转让
标题翻译：多到四线线圈天线
公开(公告)号：EP2628211B1
公开(公告)日：2017-04-12
申请号：EP11782692.5
申请日：2011-10-14
申请人： NovAtel Inc.
发明人： HUYNH, Son, Huy
IPC分类号： H01Q11/08 , H01Q5/371 , H01Q5/378
CPC分类号： H01Q11/08 , H01Q5/371 , H01Q5/378
摘要： In accordance with one or more embodiments of the present invention, a quadrifilar helix antenna can be formed to accommodate multiple frequencies using a single microstrip feed system, illustratively comprising an infinite balun in combination with interspersed antenna conductors tuned for effective resonance at the desired frequencies around the single feed system. Accordingly, as an additional aspect, the present invention also combines the multiple frequency antenna elements and the single feed system into a unitary assembly of cylindrical geometry that is generally reduced in size, with the interspersed arrangement of the multiple (e.g., resonating) antenna conductors wrapped into a short cylindrical surface. Through the use of the single hybrid feed system and resonating antenna conductors for multiple frequencies, the need for complex feed networks having multiple circuits (hybrid circuits, transformers, etc.) is alleviated, while still maintaining acceptable levels of performance.

10. 发明公开

EP3056926A1 NAVIGATION SYSTEM WITH RAPID GNSS AND INERTIAL INITIALIZATION 有权
标题翻译：导航系统麻省理工学院全球导航卫星系统在TRÄGERINITIALISIERUNG
公开(公告)号：EP3056926A1
公开(公告)日：2016-08-17
申请号：EP15189413.6
申请日：2015-10-12
申请人： Novatel, Inc.
发明人： MORIN, Kristian , BOBYE, Michael , KENNEDY, Sandra
IPC分类号： G01S19/26 , G01S19/49 , G01C21/16 , G01S5/02 , G01S5/16
CPC分类号： G01S19/49 , G01C21/165 , G01S5/0072 , G01S5/16 , G01S13/88 , G01S19/26
摘要： A navigation system for use with moving vehicles includes target points proximate to a rendezvous site located on a first moving vehicle. One or more transmitters broadcast target point positioning information. A navigation unit on a second moving vehicle utilizes a camera to capture images that include the target points or a detector system that emits one or more beams to the target points. The navigation unit determines the relative position and orientation of the rendezvous site at the second vehicle. The navigation unit utilizes the relative position and orientation and an absolute position and orientation of the rendezvous site calculated from the target position information and calculates an absolute position and orientation corresponding to the second vehicle. The navigation unit then initializes its component inertial subsystem using a local position and orientation that are based on the calculated absolute position and orientation of the second vehicle.
摘要翻译：用于移动车辆的导航系统包括靠近位于第一移动车辆上的会合位置的目标点。一个或多个发射机广播目标点定位信息。第二移动车辆上的导航单元利用照相机拍摄包括目标点的图像或者向目标点发射一个或多个光束的检测器系统。导航单元确定第二车辆处的会合位置的相对位置和方位。导航单元使用从目标位置信息计算出的会合位置的相对位置和方向以及会聚位置的绝对位置和方向，并计算与第二车辆相对应的绝对位置和方位。然后，导航单元使用基于所计算的第二车辆的绝对位置和方位的局部位置和方向来初始化其组件惯性子系统。

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