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    Methods for measuring roll, pitch and yam angle and orientation misalignment in objects
    1.
    发明授权
    Methods for measuring roll, pitch and yam angle and orientation misalignment in objects 有权

    公开(公告)号：US11624612B2

    公开(公告)日：2023-04-11

    申请号：US17200842

    申请日：2021-03-14

    申请人： Omnitek Partners LLC

    发明人： Jahangir S Rastegar

    IPC分类号： G01C19/38 ,  G01C19/48 ,  G01S1/04 ,  G01S5/02 ,  G01S7/02 ,  G01S13/88 ,  G01S13/00

    摘要： A method for determining angular orientation of an object in two or more directions. The method includes: generating a scanning polarized RF source signal; receiving the scanning polarized RF source signal at one or more cavities of a sensor disposed on the object; measuring the scanning polarized RF source signal at a first portion of the sensor; reflecting the scanning polarized RF source signal toward a second portion of the sensor; measuring the scanning polarized RF source signal at the second portion of the sensor; and determining the angular orientation of the object in the two or more directions based on the measured signal at the first and second portions of the sensor.

    INERTIAL MEASURING DEVICE FOR DETERMINING A NORTH DIRECTION
    4.
    发明申请
    INERTIAL MEASURING DEVICE FOR DETERMINING A NORTH DIRECTION 审中-公开

    公开(公告)号：US20200096335A1

    公开(公告)日：2020-03-26

    申请号：US16612377

    申请日：2018-04-27

    申请人： Northrop Grumman Litef GmbH

    发明人： Andrea Dahlhoff ,  Claus Kühne ,  Christian Spannagel

    IPC分类号： G01C19/38 ,  G01P15/18 ,  G01C21/16

    摘要： The invention relates to an inertial measuring device, having an inertial measuring unit for determining a north direction and for determining position angles, having a battery, and having a wireless interface, which inertial measuring device has a housing, in which the inertial measuring unit, the battery and the interface are housed. A carrying handle is provided on the housing, which carrying handle is designed as a one-hand carrying handle such that the inertial measuring device can be carried with only one hand during normal use.

    Inertial navigation system with improved accuracy
    5.
    发明申请
    Inertial navigation system with improved accuracy 审中-公开

    公开(公告)号：US20180356226A1

    公开(公告)日：2018-12-13

    申请号：US15780853

    申请日：2016-11-28

    申请人： Innalabs Limited

    发明人： Jose BEITIA ,  Alain RENAULT ,  Isaak OKON

    IPC分类号： G01C19/38 ,  G01C21/18

    CPC分类号： G01C19/38 ,  G01C21/18

    摘要： The invention relates to an inertial navigation system for a carrier comprising a core comprising gyroscopic sensors making it possible to determine the angular velocity thereof according to three axes defining a reference trihedron, two of the axes defining a reference plane and the third axis being at right angles to this plane. The device comprises command and control means making it possible to rotate the core about the third axis and to determine the direction of the geographic north on the basis of the information supplied by the gyroscopic sensors and by an accelerometer placed in the reference plane; the rotation of the core being performed with a period for which the value of the Allan variance of the stability error of the gyroscopic sensors is lower than a given value guaranteeing the accuracy with which the direction of the geographic north can be known.

    POLARIZED RADIO FREQUENCY (RF) ROLL, PITCH AND YAW ANGLE SENSORS AND ORIENTATION MISALIGNMENT SENSORS
    6.
    发明申请
    POLARIZED RADIO FREQUENCY (RF) ROLL, PITCH AND YAW ANGLE SENSORS AND ORIENTATION MISALIGNMENT SENSORS 审中-公开

    公开(公告)号：US20180340774A1

    公开(公告)日：2018-11-29

    申请号：US15986765

    申请日：2018-05-22

    申请人： Jahangir S. Rastegar

    发明人： Jahangir S. Rastegar

    IPC分类号： G01C19/38 ,  G01C19/48 ,  G01S1/04

    摘要： A cavity sensor including: a body defining a cavity, the cavity having an opening on one end and a closed surface on other end; a reflective surface disposed in the cavity, the reflective surface being angled 45 degrees relative to a propagation direction of an incoming wave through the opening; and first and second angle probes positioned on each of two ends of the reflective surface. Also provided is a cavity sensor including: a body defining a cavity, the body having two or more conduits, each having an opening, the body having a closed surface opposing the openings, and a probe positioned in the cavity at a position common to each of the two or more conduits.

    Method for the autonomous calibration of an inertial rig used in static mode
    7.
    发明授权
    Method for the autonomous calibration of an inertial rig used in static mode 有权
    用于静态模式下惯性平台自主校准的方法

    公开(公告)号：US09534926B2

    公开(公告)日：2017-01-03

    申请号：US14895478

    申请日：2014-06-02

    申请人： Sagem Defense Securite

    发明人： David Roberfroid ,  Vincent Cournou

    IPC分类号： G01P21/00 ,  G01C25/00 ,  G01C19/38 ,  G01C21/16

    CPC分类号： G01C25/005 ,  G01C19/38 ,  G01C21/165 ,  G01P21/00

    摘要： The invention relates to a method for the autocalibration of an inertial rig comprising an inertial core defining a sensor reference frame, implemented in the course of at least two missions (Mn, Mn+1) each comprising the determination, on the basis of measurements of gyroscopes, of the orientation of the rig in a reference frame comprising the north axis (N) and the vertical axis (Up), the method comprising the implementation:—in the course of a mission (Mn), of an estimation (200) of drift errors of the gyroscopes for the orientation of the rig at least with respect to the north axis (dgyrN); and—in the course of a following mission (Mn+1), of a calculation (400) of corrections of drift errors (DXn) of the sensor reference frame (X,Y,Z), on the basis of the estimated drift errors; and—of a calculation (600) of drift errors (Xn+1), consisting in correcting drift errors (Xn) of the sensor reference frame that were calculated during the previous mission (Mn).

    摘要翻译： 本发明涉及一种用于惯性钻机的自动校准的方法，包括定义传感器参考系的惯性芯，其在至少两个任务（Mn，Mn + 1）的过程中实施，每个任务包括确定，基于测量 在包括北轴（N）和垂直轴（Up）的参考系中的钻机的方向的陀螺仪，所述方法包括以下实现：在任务（Mn）的过程中，估计（200） 用于至少相对于北轴（dgyrN）的钻机取向的陀螺仪的漂移误差; 并且在随后的任务（Mn + 1）的过程中，基于估计的漂移误差来计算传感器参考系（X，Y，Z）的漂移误差（DXn）的校正的计算（400） ; 以及包括校正在先前任务（Mn）期间计算的传感器参考帧的漂移误差（Xn）的漂移误差（Xn + 1）的计算（600）。

    Compass
    10.
    发明授权
    Compass 有权
    罗盘

    公开(公告)号：US09091541B2

    公开(公告)日：2015-07-28

    申请号：US13283352

    申请日：2011-10-27

    申请人： Arnott Hamilton

    发明人： Arnott Hamilton

    IPC分类号： G01C19/38

    CPC分类号： G01C19/38

    摘要： The invention relates to a compass or direction determination device comprising one or more rotation sensitive sensors and means for rotating the one or more rotation sensitive sensors, wherein the means for rotating is configured to produce two or more rotation speeds of the one or more rotation sensitive sensors during a single direction determination operation.

    摘要翻译： 本发明涉及一种罗盘或方向确定装置，包括一个或多个旋转敏感传感器和用于旋转一个或多个旋转敏感传感器的装置，其中用于旋转的装置被配置成产生一个或多个旋转敏感的两个或多个旋转速度 传感器在单方向确定操作。