公开(公告)号：US20160187142A1

公开(公告)日：2016-06-30

申请号：US14586207

申请日：2014-12-30

Applicant: MICHAEL S. LARSEN ,  MICHAEL D. BULATOWICZ ,  A. DOUGLAS MEYER ,  DENNIS P. BEVAN

Inventor： MICHAEL S. LARSEN ,  MICHAEL D. BULATOWICZ ,  A. DOUGLAS MEYER ,  DENNIS P. BEVAN

IPC: G01C21/18 ,  G01P15/14 ,  G01C21/20 ,  G01P15/105

CPC classification number: G01C21/18 ,  G01C21/08 ,  G01C21/165 ,  G01C21/20 ,  G01P15/105 ,  G01P15/14

Abstract: One example includes an inertial navigation system (INS). The INS includes a navigation controller configured to generate inertial data associated with motion of a vehicle based on at least one navigation sensor configured on the vehicle and based on magnetic anomaly data. The INS also includes a magnetic anomaly INS-aiding system comprising a plurality of magnetometers distributed in a respective plurality of locations on the vehicle. The magnetic anomaly INS-aiding system can be configured to generate the magnetic anomaly data based on magnetic field measurements of a fixed magnetic anomaly at each of the plurality of magnetometers.

Abstract translation: 一个例子包括惯性导航系统（INS）。 INS包括导航控制器，其被配置为基于配置在车辆上的至少一个导航传感器并且基于磁异常数据来产生与车辆的运动相关联的惯性数据。 INS还包括磁异常INS辅助系统，其包括分布在车辆上的相应多个位置中的多个磁力计。 磁异常INS辅助系统可以被配置为基于多个磁力计中的每个磁力计上的固定磁异常的磁场测量来产生磁异常数据。

公开(公告)号：US08994371B2

公开(公告)日：2015-03-31

申请号：US13332536

申请日：2011-12-21

Applicant: Michael S. Larsen ,  Robert Griffith ,  Michael D. Bulatowicz ,  Philip R. Clark

Inventor： Michael S. Larsen ,  Robert Griffith ,  Michael D. Bulatowicz ,  Philip R. Clark

IPC: G01V3/00 ,  G01R33/00 ,  G01R33/12

CPC classification number: G01R33/0041 ,  G01C19/62 ,  G01R33/1284 ,  G01R33/26

Abstract: One embodiment of the invention includes an atomic sensing system. The system includes an atomic sensing device configured to generate an output signal along an output axis in response to a plurality of control parameters. The system also includes a signal generator configured to apply a reference signal to a cross-axis that is approximately orthogonal to the output axis. The system also includes a phase measurement system configured to demodulate the output signal relative to the reference signal to measure a relative phase alignment between the output axis and a physical axis of the atomic sensing device based on the reference signal.

Abstract translation: 本发明的一个实施例包括原子感测系统。 该系统包括原子感测装置，其被配置为响应于多个控制参数沿着输出轴产生输出信号。 该系统还包括信号发生器，该信号发生器被配置为将参考信号施加到大致正交于输出轴的交叉轴。 该系统还包括相位测量系统，其被配置为相对于参考信号解调输出信号，以基于参考信号来测量原子感测装置的输出轴和物理轴之间的相对相位对准。

公开(公告)号：US20140159718A1

公开(公告)日：2014-06-12

申请号：US13711199

申请日：2012-12-11

Applicant: MICHAEL S. LARSEN ,  ROBERT C. GRIFFITH ,  MICHAEL D. BULATOWICZ ,  PHILIP R. CLARK

Inventor： MICHAEL S. LARSEN ,  ROBERT C. GRIFFITH ,  MICHAEL D. BULATOWICZ ,  PHILIP R. CLARK

IPC: G01R33/24

CPC classification number: G01R33/26 ,  G01R33/032 ,  G01R33/24 ,  G01R33/443 ,  G01R33/60

Abstract: One embodiment of the invention includes a magnetometer system. The system includes a sensor cell comprising alkali metal particles and a probe laser configured to provide a probe beam through the sensor cell. The system also includes a detection system configured to implement nuclear magnetic resonance (NMR) detection of a vector magnitude of an external magnetic field in a first of three orthogonal axes based on characteristics of the probe beam passing through the sensor cell and to implement electron paramagnetic resonance (EPR) detection of a vector magnitude of the external magnetic field in a second and a third of the three orthogonal axes based on the characteristics of the probe beam passing through the sensor cell. The system further includes a controller configured to calculate a scalar magnitude of the external magnetic field based on the magnitude of the external magnetic field in each of the three orthogonal axes.

Abstract translation: 本发明的一个实施例包括磁力计系统。 该系统包括包含碱金属颗粒的传感器单元和被配置为提供探针束通过传感器单元的探针激光器。 该系统还包括检测系统，其被配置为基于通过传感器单元的探测光束的特性来实现三个正交轴中的第一个中的外部磁场的矢量幅值的核磁共振（NMR）检测，并实现电子顺磁性 基于通过传感器单元的探测光束的特性，在三个正交轴的第二和第三个中的外部磁场的矢量幅度的共振（EPR）检测。 该系统还包括控制器，其被配置为基于三个正交轴中的每一个中的外部磁场的大小来计算外部磁场的标量。

公开(公告)号：US20220018913A1

公开(公告)日：2022-01-20

申请号：US16928609

申请日：2020-07-14

Applicant: THAD G. WALKER ,  MICHAEL D. BULATOWICZ

Inventor： THAD G. WALKER ,  MICHAEL D. BULATOWICZ

IPC: G01R33/26

Abstract: One example includes a magnetometer that includes a sensor cell comprising alkali metal vapor and a magnetic field generator system that generates predetermined AC magnetic fields through the sensor cell. The magnetometer also includes a laser system to provide optical pump and probe beams through the sensor cell in a pulsed manner to facilitate precession of the alkali metal vapor and to provide a detection beam corresponding to the optical probe beam exiting the sensor cell. The detection beam exhibits an optical property corresponding to a modified precession of the alkali metal vapor based on the predetermined AC magnetic fields and an external magnetic field. The magnetometer also includes a detection system to monitor the detection beam to detect the modified precession of the alkali metal vapor to calculate scalar and vector components of the external magnetic field based on the plurality of predetermined AC magnetic fields.

公开(公告)号：US20190293736A1

公开(公告)日：2019-09-26

申请号：US14188436

申请日：2014-02-24

Applicant: MICHAEL D. BULATOWICZ

Inventor： MICHAEL D. BULATOWICZ

IPC: G01R33/26 ,  G01C19/62

Abstract: One example embodiment includes an atomic sensor system. The system includes a vapor cell comprising an alkali metal vapor that precesses in response to a magnetic field. The system also includes a probe laser that generates an optical probe beam that is modulated about a center frequency and which is provided through the vapor cell. A photodetector assembly generates an intensity signal corresponding to a Faraday rotation associated with a detection beam that is associated with the optical probe beam exiting the vapor cell. The system further includes a detection system configured to demodulate the intensity signal at a frequency corresponding to a modulation frequency of the optical probe beam and to generate a feedback signal based on the demodulated intensity signal. The feedback signal is provided to the probe laser to substantially stabilize the center frequency of the optical probe beam based on the feedback signal.

公开(公告)号：US10126324B2

公开(公告)日：2018-11-13

申请号：US15615438

申请日：2017-06-06

Applicant: Robert E. Stewart ,  Michael D. Bulatowicz

Inventor： Robert E. Stewart ,  Michael D. Bulatowicz

IPC: G01P21/00 ,  G01P15/125 ,  G01P15/13 ,  G01P15/08

Abstract: One embodiment includes a method for dynamic self-calibration of an accelerometer system. The method includes forcing a proof-mass associated with a sensor of the accelerometer system in a first direction to a first predetermined position and obtaining a first measurement associated with the sensor in the first predetermined position via at least one force/detection element of the sensor. The method also includes forcing the proof-mass to a second predetermined position and obtaining a second measurement associated with the sensor in the second predetermined position via the at least one force/detection element of the sensor. The method further includes calibrating the accelerometer system based on the first and second measurements.

公开(公告)号：US09970999B2

公开(公告)日：2018-05-15

申请号：US13907293

申请日：2013-05-31

Applicant: Michael S. Larsen ,  Henry C. Abbink ,  Thad G. Walker ,  Michael D. Bulatowicz

Inventor： Michael S. Larsen ,  Henry C. Abbink ,  Thad G. Walker ,  Michael D. Bulatowicz

IPC: G01R33/26 ,  G01R33/32 ,  G01C19/62

CPC classification number: G01R33/26 ,  G01C19/62 ,  G01R33/323

Abstract: One embodiment includes a nuclear magnetic resonance (NMR) sensor system. The system includes a pump laser configured to generate an optical pump beam at a first wavelength and a probe laser configured to generate an optical probe beam at a second wavelength that is different from the first wavelength. The system also includes beam optics configured to direct the pump laser and the probe laser along orthogonal axes through a sensor cell comprising an alkali metal vapor. The system further includes detection optics that include a photodetector assembly configured to measure at least one characteristic associated with the optical probe beam leaving the sensor cell for measurement of a polarization vector of the alkali metal vapor. The detection optics can include at least one filter configured to filter light having the first wavelength and to pass light having the second wavelength to the photodetector assembly.

公开(公告)号：US20180052211A1

公开(公告)日：2018-02-22

申请号：US15714669

申请日：2017-09-25

Applicant: MICHAEL D. BULATOWICZ

Inventor： MICHAEL D. BULATOWICZ

IPC: G01R33/34 ,  G01R33/565 ,  B05D7/00

CPC classification number: G01R33/34 ,  B05D7/52 ,  B32B15/00 ,  B32B15/01 ,  B32B18/00 ,  C04B37/001 ,  C04B37/021 ,  C04B2237/34 ,  C04B2237/348 ,  C04B2237/36 ,  C04B2237/408 ,  G01C19/00 ,  G01C19/60 ,  G01R33/00 ,  G01R33/42 ,  G01R33/56536 ,  Y10T428/23 ,  Y10T428/239

Abstract: One example includes a method for fabricating a compound material. The method includes providing a first discrete material layer having a first thickness dimension. The first discrete material layer includes a first material having a first magnetic susceptibility. The method also includes depositing a second discrete material layer having a second thickness dimension over the first discrete material layer. The second discrete material layer can include a second material having a second magnetic susceptibility. The relative first and second thickness dimensions can be selected to provide a desired magnetic susceptibility of the compound material.

公开(公告)号：US20170280252A1

公开(公告)日：2017-09-28

申请号：US15081043

申请日：2016-03-25

Applicant: MICHAEL D. BULATOWICZ

Inventor： MICHAEL D. BULATOWICZ

IPC: H04R23/00

CPC classification number: H04R23/008 ,  H04R23/006 ,  H04R2410/00

Abstract: One embodiment includes an optical microphone system. The system includes a laser configured to emit an optical beam at a linear polarization and an optical cavity system comprising a membranous mirror that is configured to reflect the optical beam and to vibrate in response to an acoustic input signal. The optical cavity system includes at least one photodetector configured to receive at least a portion of the optical beam to generate a microphone signal that is indicative of the vibration of the membranous mirror resulting from the acoustic input signal based on the reflection of the optical beam. The system further includes an acoustic processor configured to process the microphone signal to calculate a frequency of the acoustic input signal.

公开(公告)号：US09500725B2

公开(公告)日：2016-11-22

申请号：US13960127

申请日：2013-08-06

Applicant: Michael D. Bulatowicz

Inventor： Michael D. Bulatowicz

IPC: G01R33/26 ,  G01C19/62

CPC classification number: G01R33/26 ,  G01C19/62

Abstract: An atomic sensor system includes a magnetic field generator configured to generate a magnetic field along an axis and a probe laser configured to generate an optical probe beam. Beam optics direct the optical probe beam through a sensor cell comprising an alkali metal vapor such that the optical probe beam has at least a vector component along the axis. The system also includes detection optics comprising a photodetector assembly configured to measure a Faraday rotation associated with the optical probe beam exiting the sensor cell and to generate a feedback signal based on the Faraday rotation associated with the optical probe beam exiting the sensor cell. The system further includes a laser controller configured to modulate a frequency of the optical probe beam about a center frequency and to substantially stabilize the center frequency of the optical probe beam based on the feedback signal.

Abstract translation: 原子传感器系统包括被配置为沿着轴产生磁场的磁场发生器和被配置为产生光学探测光束的探测激光器。 光束光学器件将光学探针光束引导通过包含碱金属蒸气的传感器单元，使得光学探针光束沿轴线至少具有矢量分量。 该系统还包括检测光学器件，其包括光电检测器组件，其被配置为测量与离开传感器单元的光学探针光束相关联的法拉第旋转，并且基于与离开传感器单元的光学探针光束相关联的法拉第旋转生成反馈信号。 该系统还包括激光控制器，该激光控制器被配置成基于反馈信号调制围绕中心频率的光学探针光束的频率并且基本上稳定光学探针光束的中心频率。