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1. 发明公开

EP3537106A3 MAGNETIC-INERTIAL GLOBAL POSITIONING SYSTEM 审中-实审
公开(公告)号：EP3537106A3
公开(公告)日：2020-01-01
申请号：EP19160212.7
申请日：2019-03-01
申请人： Northrop Grumman Systems Corporation
发明人： Larsen, Michael S.
IPC分类号： G01C21/08 , G01C21/16
摘要： One example includes a magnetic-inertial global positioning system mounted on a platform. The system includes an inertial system configured to determine an approximate latitude associated with an approximate global position of the global positioning system. The system also includes a magnetometer system configured to determine an ambient magnetic field at the approximate global position. The system further includes a location processor configured to compare the ambient magnetic field with a predetermined magnetic field profile to determine an approximate longitude along the determined approximate latitude to determine the approximate global position of the platform.

2. 发明授权

EP2282167B1 Nuclear magnetic resonance gyroscope mechanization 有权转让
公开(公告)号：EP2282167B1
公开(公告)日：2018-05-30
申请号：EP10008100.9
申请日：2010-08-03
申请人： Northrop Grumman Systems Corporation
发明人： Bulatowicz, Michael D. , Larsen, Michael S. , Griffith, Robert
IPC分类号： G01C19/62 , G01R33/26 , G01N24/00
CPC分类号： G01C19/62 , G01R33/26
摘要： One embodiment of the invention includes a nuclear magnetic resonance (NMR) gyroscope system. The system includes a gyro cell that is sealed to enclose an alkali metal vapor, a first gyromagnetic isotope, a second gyromagnetic isotope, and a third gyromagnetic isotope. The system also includes a magnetic field generator configured to generate a substantially uniform magnetic field that is provided through the gyro cell to cause the first, second, and third gyromagnetic isotopes to precess. The system further includes an angular rotation sensor configured to measure a rotation angle about a sensitive axis of the NMR gyroscope system based on measured precession angles of the first, second, and third gyromagnetic isotopes.

3. 发明授权

EP2952854B1 SELF-CALIBRATING NUCLEAR MAGNETIC RESONANCE (NMR) GYROSCOPE SYSTEM 有权
标题翻译：自校准核磁共振（NMR）-GYROSKOPSYSTEM
公开(公告)号：EP2952854B1
公开(公告)日：2017-01-11
申请号：EP15169150.8
申请日：2015-05-26
申请人： Northrop Grumman Systems Corporation
发明人： Bulatowicz, Michael D. , Larsen, Michael S.
IPC分类号： G01C19/62 , G01C25/00
CPC分类号： G01C25/00 , G01C19/62 , G01C25/005
摘要： One embodiment includes a nuclear magnetic resonance (NMR) gyroscope system. The system includes a vapor cell comprising an alkali metal and a plurality of gyromagnetic isotopes and a pump laser configured to generate an optical pump beam configured to spin-polarize the alkali metal. The system also includes a probe laser that generates an optical probe beam and a detection system configured to monitor the optical probe beam and to calculate a rotation of the NMR gyroscope system about a sensitive axis based on a modulation of the optical probe beam in response to precession of the plurality of gyromagnetic isotopes resulting from the spin-polarization of the alkali metal. The system further includes a calibration controller that modulates a characteristic of the optical pump beam to substantially mitigate bias errors associated with the gyromagnetic isotopes in the calculation of the rotation of the NMR gyroscope system about the sensitive axis.

4. 发明公开

EP2952854A1 SELF-CALIBRATING NUCLEAR MAGNETIC RESONANCE (NMR) GYROSCOPE SYSTEM 有权
标题翻译： SEL AL ER ES ES ES Z Z Z Z TEM TEM TEM TEM TEM TEM TEM TEM TEM TEM TEM TEM
公开(公告)号：EP2952854A1
公开(公告)日：2015-12-09
申请号：EP15169150.8
申请日：2015-05-26
申请人： Northrop Grumman Systems Corporation
发明人： Bulatowicz, Michael D. , Larsen, Michael S.
IPC分类号： G01C19/62 , G01C25/00
CPC分类号： G01C25/00 , G01C19/62 , G01C25/005
摘要： One embodiment includes a nuclear magnetic resonance (NMR) gyroscope system. The system includes a vapor cell comprising an alkali metal and a plurality of gyromagnetic isotopes and a pump laser configured to generate an optical pump beam configured to spin-polarize the alkali metal. The system also includes a probe laser that generates an optical probe beam and a detection system configured to monitor the optical probe beam and to calculate a rotation of the NMR gyroscope system about a sensitive axis based on a modulation of the optical probe beam in response to precession of the plurality of gyromagnetic isotopes resulting from the spin-polarization of the alkali metal. The system further includes a calibration controller that modulates a characteristic of the optical pump beam to substantially mitigate bias errors associated with the gyromagnetic isotopes in the calculation of the rotation of the NMR gyroscope system about the sensitive axis.
摘要翻译：一个实施例包括核磁共振（NMR）陀螺仪系统。该系统包括包含碱金属和多个回旋同位素的蒸汽池，以及被配置为产生被配置为使碱金属旋转极化的光泵梁的泵激光器。该系统还包括产生光学探针光束的探测激光器和被配置为监测光学探测光束并且基于响应于光学探针光束的调制而计算NMR陀螺仪系统围绕敏感轴的旋转的探测系统由碱金属的自旋极化产生的多个回旋磁同位素的旋进。该系统还包括校准控制器，该校准控制器在计算NMR陀螺仪系统围绕敏感轴的旋转时调制光泵浦光束的特性，从而基本上减轻与陀螺磁同位素相关联的偏差误差。

5. 发明公开

EP2944971A1 ATOMIC SENSOR SYSTEM 有权
标题翻译： ATOMSENSORSYSTEM
公开(公告)号：EP2944971A1
公开(公告)日：2015-11-18
申请号：EP15167451.2
申请日：2015-05-13
申请人： Northrop Grumman Systems Corporation
发明人： Bulatowicz, Michael D. , Larsen, Michael S.
IPC分类号： G01R33/26 , G01C19/62
摘要： One embodiment includes an atomic sensor system (10). The system includes a vapor cell (56) that is sealed to enclose an alkali metal that is spin-polarized by an optical beam. The vapor cell includes a mirror at a distal end. The system also includes an optical system including a photodetector system and a laser that generates the optical beam (54). The optical beam is provided into a proximal end of the vapor cell and is reflected back to the photodetector system via the mirror (60) as a reflected optical beam to generate at least one intensity signal. The optical system further includes a control system (24) that modulates a wavelength of the optical beam between an on-resonance wavelength and an off-resonance wavelength with respect to the alkali metal. The system also includes a processor (26) that calculates a measurable parameter associated with the atomic sensor system based on the at least one intensity signal.
摘要翻译：一个实施例包括原子传感器系统（10）。该系统包括一个蒸气室（56），其被密封以包围由光束自旋极化的碱金属。蒸汽池包括在远端的反射镜。该系统还包括光学系统，其包括光电检测器系统和产生光束（54）的激光器。光束被提供到蒸汽单元的近端，并且经由反射镜（60）作为反射光束被反射回到光电检测器系统以产生至少一个强度信号。光学系统还包括控制系统（24），该控制系统（24）相对于碱金属调制在共振波长和非共振波长之间的光束的波长。该系统还包括处理器（26），其基于至少一个强度信号计算与原子传感器系统相关联的可测量参数。

6. 发明公开

EP2910900A1 Nuclear magnetic resonance gyroscope system 有权
标题翻译： Kernmagnetresonanz-Gyroskopsystem
公开(公告)号：EP2910900A1
公开(公告)日：2015-08-26
申请号：EP15155621.4
申请日：2015-02-18
申请人： Northrop Grumman Systems Corporation
发明人： Bulatowicz, Michael D. , Larsen, Michael S.
IPC分类号： G01C19/62
CPC分类号： G01C19/60 , G01C19/62
摘要： One embodiment includes a nuclear magnetic resonance (NMR) gyroscope system. The system includes a vapor cell that encloses an alkali metal and a gyromagnetic isotope. The system also includes a magnetic field source that generates a magnetic field aligned with a sensitive axis of the NMR gyroscope system and which is provided through the vapor cell to cause the alkali metal and the gyromagnetic isotope to precess. The system also includes a laser that generates an optical beam that polarizes the alkali metal in the vapor cell to facilitate the precession of the alkali metal and the gyromagnetic isotope. The system further includes an angular rotation sensor configured to calculate a rotation angle about the sensitive axis based on a measured characteristic of a detection beam corresponding to the optical beam exiting the vapor cell, the characteristic being associated with the precession of the gyromagnetic isotope.
摘要翻译：一个实施例包括核磁共振（NMR）陀螺仪系统。该系统包括包围碱金属和回旋磁同位素的蒸汽池。该系统还包括产生与NMR陀螺仪系统的敏感轴对准的磁场的磁场源，并且通过蒸气室提供磁场，以使碱金属和回旋磁同位素进入。该系统还包括产生使蒸气室中的碱金属极化的光束的激光器，以促进碱金属和旋磁同位素的进动。该系统还包括一个角度旋转传感器，该角度旋转传感器被配置为基于与离开蒸气室的光束相对应的检测光束的测量特性来计算关于感测轴的旋转角度，该特性与旋转磁同位素的进动相关联。

7. 发明授权

EP3040680B1 MAGNETIC ANOMALY TRACKING FOR AN INERTIAL NAVIGATION SYSTEM 有权
公开(公告)号：EP3040680B1
公开(公告)日：2019-02-27
申请号：EP15187614.1
申请日：2015-09-30
申请人： Northrop Grumman Systems Corporation
发明人： Larsen, Michael S. , Bulatowicz, Michael D. , Meyer, Douglas , Bevan, Dennis P.
IPC分类号： G01C21/18 , G01C21/20 , G01P15/00 , G01C21/08 , G01C21/16 , G01P15/105 , G01P15/14

8. 发明公开

EP3410142A1 PULSED-BEAM ATOMIC MAGNETOMETER SYSTEM 有权
公开(公告)号：EP3410142A1
公开(公告)日：2018-12-05
申请号：EP18175089.4
申请日：2018-05-30
申请人： Northrop Grumman Systems Corporation
发明人： Bulatowicz, Michael D. , Walker, Thad G. , Larsen, Michael S.
IPC分类号： G01R33/26 , G01R33/032
摘要： One example includes a magnetometer system. The system includes a sensor cell (258) comprising alkali metal vapor and a laser system (252, 254) configured to provide an optical pump beam through the sensor cell in a pulsed manner to facilitate precession of the alkali metal vapor in response to an external magnetic field and to provide an optical probe beam through the sensor cell in a pulsed manner based on a precession frequency of the alkali metal vapor. The system also includes a detection system (268, 286, 270) configured to detect the precession of the alkali metal vapor in response to a detection beam corresponding to the optical probe beam exiting the sensor cell and to calculate an amplitude and direction of the external magnetic field based on the detected precession of the alkali metal vapor.

9. 发明公开

EP2952855A1 OPTICAL PROBE BEAM STABILIZATION IN AN ATOMIC SENSOR SYSTEM 有权
标题翻译：爱因斯坦体系中的STABILISIERUNG VON OPTISCHEM SONDENSTRAHL
公开(公告)号：EP2952855A1
公开(公告)日：2015-12-09
申请号：EP15169193.8
申请日：2015-05-26
申请人： Northrop Grumman Systems Corporation
发明人： Bulatowicz, Michael D. , Larsen, Michael S.
IPC分类号： G01C19/62
CPC分类号： G01R33/26 , G01C19/62
摘要： One example embodiment includes an atomic sensor system. A probe laser generates a probe beam. A first portion of the probe beam is provided through a sensor cell comprising a first alkali vapor to calculate a measurable parameter of the system based on a first detection beam corresponding to the first portion of the probe beam exiting the sensor cell. A second portion of the probe beam can be provided through a stabilization cell that comprises a second vapor. A detection system can be configured to stabilize the frequency of the probe beam in a manner that is on-resonance with respect to an optical transition wavelength of the second alkali vapor and off-resonance with respect to an optical transition wavelength of the first alkali vapor based on a second detection beam corresponding to the second portion of the probe beam exiting the stabilization cell.
摘要翻译：一个示例实施例包括原子传感器系统。探头激光器产生探针光束。探测光束的第一部分通过包括第一碱性蒸气的传感器单元提供，以基于对应于离开传感器单元的探测光束的第一部分的第一检测光束来计算系统的可测量参数。探针束的第二部分可以通过包括第二蒸气的稳定池提供。检测系统可以被配置为以相对于第二碱性蒸汽的光学跃迁波长为共振的方式稳定探测光束的频率，并且相对于第一碱性蒸气的光学跃迁波长为非共振基于对应于离开稳定单元的探测光束的第二部分的第二检测光束。

10. 发明授权

EP2282243B1 Atomic clock system and frequency tuning method for such a system 有权
标题翻译：原子钟系统和频率调谐方法，用于这种系统
公开(公告)号：EP2282243B1
公开(公告)日：2013-11-13
申请号：EP10008101.7
申请日：2010-08-03
申请人： Northrop Grumman Systems Corporation
发明人： Larsen, Michael S.
IPC分类号： G04F5/14
CPC分类号： G04F5/145

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