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1. WO2012063243 - A SYSTEM AND METHOD FOR NORTH FINDING

Publication Number WO/2012/063243
Publication Date 18.05.2012
International Application No. PCT/IL2011/050006
International Filing Date 09.11.2011
Chapter 2 Demand Filed 11.04.2013
IPC
G01C 21/18 2006.01
GPHYSICS
01MEASURING; TESTING
CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
21Navigation; Navigational instruments not provided for in groups G01C1/-G01C19/104
10by using measurement of speed or acceleration
12executed aboard the object being navigated; Dead reckoning
16by integrating acceleration or speed, i.e. inertial navigation
18Stabilised platforms, e.g. by gyroscope
G01C 19/38 2006.01
GPHYSICS
01MEASURING; TESTING
CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
19Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
02Rotary gyroscopes
34for indicating a direction in the horizontal plane, e.g. directional gyroscopes
38with north-seeking action by other than magnetic means, e.g. gyrocompasses using earth's rotation
CPC
G01C 17/00
GPHYSICS
01MEASURING; TESTING
CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
17Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
G01C 19/38
GPHYSICS
01MEASURING; TESTING
CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
19Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
02Rotary gyroscopes
34for indicating a direction in the horizontal plane, e.g. directional gyroscopes
38with north-seeking action by other than magnetic means, e.g. gyrocompasses using earth's rotation
G01C 21/18
GPHYSICS
01MEASURING; TESTING
CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
21Navigation; Navigational instruments not provided for in preceding groups G01C1/00-G01C19/00
10by using measurements of speed or acceleration
12executed aboard the object being navigated; Dead reckoning
16by integrating acceleration or speed, i.e. inertial navigation
18Stabilised platforms, e.g. by gyroscope
Applicants
  • ISRAEL AEROSPACE INDUSTRIES LTD. [IL]/[IL] (AllExceptUS)
  • KAGAN, Avraham [IL]/[IL] (UsOnly)
  • BENISTY, Michael [IL]/[IL] (UsOnly)
Inventors
  • KAGAN, Avraham
  • BENISTY, Michael
Agents
  • REINHOLD COHN AND PARTNERS
Priority Data
20926111.11.2010IL
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) A SYSTEM AND METHOD FOR NORTH FINDING
(FR) SYSTÈME ET PROCÉDÉ POUR TROUVER LE NORD
Abstract
(EN)
A payload including a gimbal assembly and gyro assembly that includes a gyro assembly control associated with the gyro assembly and operable to trigger the gyro assembly to obtain deviation measurements and process the measurements in a first dynamic range for stabilizing the payload utilizing the gimbal assembly. The gyro assembly control is operable to trigger the gyro assembly to obtain instantaneous measurements and process the measurements in a second dynamic range having different sensitivity than the first dynamic range, for finding deviation of the payload from the magnetic north of the earth.
(FR)
L'invention concerne une charge utile comprenant un ensemble suspension à Cardan et un ensemble gyroscope qui comprend une commande d'ensemble gyroscope associée à l'ensemble gyroscope et servant à déclencher l'ensemble gyroscope pour obtenir des mesures de déviation et à traiter les mesures dans une première plage dynamique pour stabiliser la charge utile au moyen de l'ensemble suspension à Cardan. La commande d'ensemble gyroscope sert à déclencher l'ensemble gyroscope pour obtenir des mesures instantanées et traiter les mesures dans une seconde plage dynamique ayant une sensibilité différente de la première plage dynamique, afin de trouver une déviation de la charge utile par rapport au nord magnétique de la Terre.
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