EP3794318A1 - Procede d'harmonisation de deux unites de mesure inertielle l'une avec l'autre et systeme de navigation mettant en & x152;uvre ce procede - Google Patents
Procede d'harmonisation de deux unites de mesure inertielle l'une avec l'autre et systeme de navigation mettant en & x152;uvre ce procedeInfo
- Publication number
- EP3794318A1 EP3794318A1 EP19722653.3A EP19722653A EP3794318A1 EP 3794318 A1 EP3794318 A1 EP 3794318A1 EP 19722653 A EP19722653 A EP 19722653A EP 3794318 A1 EP3794318 A1 EP 3794318A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- inertial measurement
- measurement unit
- unit
- inertial
- specific force
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/10—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration
- G01C21/12—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning
- G01C21/16—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation
- G01C21/166—Mechanical, construction or arrangement details of inertial navigation systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
- G01C25/005—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass initial alignment, calibration or starting-up of inertial devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/10—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration
- G01C21/12—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning
- G01C21/16—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
- G01P15/13—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by measuring the force required to restore a proofmass subjected to inertial forces to a null position
Definitions
- An inertial navigation system usually incorporates an Inertial Measurement Unit (IMU), which comprises three accelerometric sensors arranged along the axes of an inertial measurement unit (IMU). accelerometer measuring instrument and three angular sensors, gyroscopes or gyrometers, for measuring angular movements of the accelerometric measurement reference with respect to a reference orientation of the measurement mark.
- Each accelerometric sensor comprises a proof mass (or "proof mass") subject to the gravity and accelerations of the object which is integral with the inertial unit (for example a vehicle).
- the accelerometers measure a magnitude called specific force ("force-specific" or "g-force” in English) and determine the three components of a specific force vector.
- Harmonization between a first inertial unit and a second inertial unit that are carried by the same vehicle is performed by calculating a rotation matrix to project the specific force vectors of the two inertial units in a same frame.
- This harmonization operation can only be carried out using an in-depth navigation program. the implementation of which requires relatively large computer resources.
- both inertial units be of sufficient precision to enable navigation to be carried out.
- the optronic device for navigation by targeting elements of the landscape whose position is known, such as bitter or celestial objects.
- FIG. 4 is a schematic sectional view of an inertial system according to the invention.
- the invention relates to a navigation system 1 for a vehicle.
- vehicle is a ship here, but the invention applies to the same type of vehicle, whether overhead or overland.
- the satellite geolocation unit 20 is arranged in a manner known per se to work with at least one of the constellations of GPS satellites, GALILEO, GLONASS, BAIDU ...
- the optronic apparatus 30 comprises, in a manner known per se, a base 40 and a turret 50 provided with a sighting device 60 and mounted on the base 50 to pivot about a first axis A1 or axis deposit.
- the sighting device 60 is mounted in the turret 50 to pivot about an axis A2, or axis of elevation, perpendicular to the axis A1.
- the control unit 10 is further arranged to determine a line of sight of the sighting device 60 from measurements of the second inertial measurement unit 100.2 and to project it into a frame of the first inertial measurement unit 100.1. . To do this, the sighting device 60 is pointed towards geographical landmarks whose position is known, for example celestial objects and / or bitter.
- the harmonization method is implemented by the control unit 10 and comprises the steps of;
- control unit determine a harmonization value from the specific force deviation and the rotation difference (the lever arm between the two inertial measurement units is here neglected).
- the comparison of the specific force vectors is carried out by comparing the outputs of the accelerometers
- the two inertial measurement units can be mounted in the same apparatus, as in the embodiment described, or in separate apparatuses.
- the second inertial measurement unit 100.2 may be distinct from the optronic apparatus 30.
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Manufacturing & Machinery (AREA)
- Navigation (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
- Manipulator (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1854076A FR3081220B1 (fr) | 2018-05-16 | 2018-05-16 | Procede d'harmonisation de deux unites de mesure inertielle l'une avec l'autre et systeme de navigation mettant en œuvre ce procede |
| PCT/EP2019/062241 WO2019219626A1 (fr) | 2018-05-16 | 2019-05-13 | Procede d'harmonisation de deux unites de mesure inertielle l'une avec l'autre et systeme de navigation mettant en œuvre ce procede |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3794318A1 true EP3794318A1 (fr) | 2021-03-24 |
Family
ID=65031201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19722653.3A Pending EP3794318A1 (fr) | 2018-05-16 | 2019-05-13 | Procede d'harmonisation de deux unites de mesure inertielle l'une avec l'autre et systeme de navigation mettant en & x152;uvre ce procede |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US12270658B2 (fr) |
| EP (1) | EP3794318A1 (fr) |
| CA (1) | CA3100115C (fr) |
| FR (1) | FR3081220B1 (fr) |
| IL (1) | IL278733B2 (fr) |
| WO (1) | WO2019219626A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3097316B1 (fr) * | 2019-06-14 | 2022-01-28 | Safran Electronics & Defense | Procédé de surveillance des performances d’unités de mesure inertielle |
| CN110940357B (zh) * | 2019-12-20 | 2021-07-20 | 湖北航天技术研究院总体设计所 | 一种用于旋转惯导单轴自对准的内杆臂标定方法 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5570304A (en) * | 1994-07-27 | 1996-10-29 | Litton Systems, Inc. | Method for thermal modeling and updating of bias errors in inertial navigation instrument outputs |
| US7133776B2 (en) * | 2000-07-28 | 2006-11-07 | Litton Systems, Inc. | Attitude alignment of a slave inertial measurement system |
| KR100761011B1 (ko) * | 2006-05-30 | 2007-09-21 | 학교법인 인하학원 | 카메라형 태양센서를 이용한 관성항법시스템의자세보정장치 및 방법 |
| US7979231B2 (en) * | 2008-11-13 | 2011-07-12 | Honeywell International Inc. | Method and system for estimation of inertial sensor errors in remote inertial measurement unit |
| FR2963095B1 (fr) * | 2010-07-23 | 2017-04-28 | Mbda France | Procede et systeme d'harmonisation d'un referentiel d'un positionneur angulaire par rapport a un referentiel terrestre |
| FR3000219B1 (fr) * | 2012-12-26 | 2015-01-09 | Sagem Defense Securite | Procede de comparaison de deux centrales inertielles solidaires d'un meme porteur |
| WO2015149079A1 (fr) * | 2014-03-28 | 2015-10-01 | Flir Systems, Inc. | Système de cardan avec isolation précontrainte |
| US9377309B2 (en) * | 2014-03-31 | 2016-06-28 | Honeywell International Inc. | Global positioning system (GPS) self-calibrating lever arm function |
| FR3043455B1 (fr) * | 2015-11-10 | 2017-12-01 | Sagem Defense Securite | Procede d'elaboration d'une navigation et procede d'orientation d'un organe de visee a partir de cette navigation |
| WO2017165854A2 (fr) * | 2016-03-24 | 2017-09-28 | CyPhy Works, Inc. | Système de reconnaissance et de communication aérienne persistante |
| US10455155B1 (en) * | 2016-10-25 | 2019-10-22 | Skydio, Inc. | Counter-balanced suspended image stabilization system |
| CN106525034B (zh) * | 2016-10-26 | 2017-09-08 | 郑州轻工业学院 | 一种基于对偶四元数的惯导系统传递对准建模方法 |
-
2018
- 2018-05-16 FR FR1854076A patent/FR3081220B1/fr active Active
-
2019
- 2019-05-13 EP EP19722653.3A patent/EP3794318A1/fr active Pending
- 2019-05-13 WO PCT/EP2019/062241 patent/WO2019219626A1/fr not_active Ceased
- 2019-05-13 US US17/055,388 patent/US12270658B2/en active Active
- 2019-05-13 CA CA3100115A patent/CA3100115C/fr active Active
- 2019-05-13 IL IL278733A patent/IL278733B2/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US12270658B2 (en) | 2025-04-08 |
| FR3081220B1 (fr) | 2020-05-29 |
| IL278733B1 (en) | 2025-11-01 |
| US20210116247A1 (en) | 2021-04-22 |
| WO2019219626A1 (fr) | 2019-11-21 |
| IL278733A (en) | 2021-01-31 |
| CA3100115A1 (fr) | 2019-11-21 |
| FR3081220A1 (fr) | 2019-11-22 |
| CA3100115C (fr) | 2022-06-21 |
| IL278733B2 (en) | 2026-03-01 |
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