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1. WO1998035205 - GEOMAGNETIC FIELD DIRECTION MEASURING SYSTEM

Publication Number WO/1998/035205
Publication Date 13.08.1998
International Application No. PCT/EP1998/000489
International Filing Date 30.01.1998
Chapter 2 Demand Filed 31.07.1998
IPC
G01C 17/30 2006.01
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
02Magnetic compasses
28Electromagnetic compasses
30Earth-inductor compasses
G01C 17/38 2006.01
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
38Testing, calibrating, or compensating of compasses
G01C 21/28 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
26specially adapted for navigation in a road network
28with correlation of data from several navigational instruments
G01R 33/022 2006.01
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
33Arrangements or instruments for measuring magnetic variables
02Measuring direction or magnitude of magnetic fields or magnetic flux
022Measuring gradient
CPC
G01C 17/30
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
02Magnetic compasses
28Electromagnetic compasses
30Earth-inductor compasses
G01C 17/38
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
38Testing, calibrating, or compensating of compasses
G01C 21/28
GPHYSICS
01MEASURING; TESTING
CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
21Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
26specially adapted for navigation in a road network
28with correlation of data from several navigational instruments
G01R 33/022
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
33Arrangements or instruments for measuring magnetic variables
02Measuring direction or magnitude of magnetic fields or magnetic flux
022Measuring gradient
Applicants
  • LEICA GEOSYSTEMS AG [CH]/[CH] (AllExceptUS)
  • GNEPF, Silvio [CH]/[CH] (UsOnly)
  • RAMSEIER, Ernst [CH]/[CH] (UsOnly)
Inventors
  • GNEPF, Silvio
  • RAMSEIER, Ernst
Priority Data
197 04 956.710.02.1997DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) ANORDNUNG ZUM MESSEN DER RICHTUNG DES ERDMAGNETFELDES
(EN) GEOMAGNETIC FIELD DIRECTION MEASURING SYSTEM
(FR) SYSTEME POUR MESURER LE SENS DU CHAMP GEOMAGNETIQUE
Abstract
(DE)
Anordnung zum Messen der Richtung des Erdmagnetfeldes (a) in der Nähe eines magnetischen Störers mit zeitlich veränderlicher Magnetfeldrichtung, die sich dadurch auszeichnet, daß mindestens zwei Magnetfeldmeßgeräte vorgesehen sind, die jeweils alle drei Vektorkomponenten des Gesamtmagnetfeldes (b) messen, die Magnetfeldmeßgeräte eine feste, zeitlich unveränderliche Lage (c) zueinander und zum Störer aufweisen, die Meßwerte zeitsynchron abrufbar sind und entsprechend (d) auswertbar sind, wobei P(c) die geometrische Lage der Magnetfeldmeßgeräte zueinander und zum Störer beschreibt.
(EN)
The invention relates to a system for measuring the direction of the geomagnetic field (a) in the proximity of a magnetic jamming device with a magnetic field direction which can be varied. Said system is characterized in that it comprises at least two magnetic field measuring devices, each measuring all three vector components of the total magnetic field (b), that said devices have a fixed position, not variable in time (c), in relation to each other and to the jamming device, and that the measurements can be retrieved in a time-synchronous manner and evaluated on the basis of (d), where P(c) describes the geometric position of the magnetic field measuring devices in relation to each other and to the jamming device.
(FR)
L'invention concerne un système permettant de mesurer le sens du champ géomagnétique (a) à proximité d'un dispositif de brouillage à sens de champ magnétique variable dans le temps. Ce système se caractérise en ce qu'il est prévu au moins deux appareils de mesure de champ magnétique qui mesurent chacun les trois composantes vectorielles du champ magnétique global (b). Les appareils de mesure de champ magnétique présentent une position fixe, invariable dans le temps (c) l'un par rapport à l'autre, ainsi que par rapport au dispositif de brouillage. Les valeurs mesurées peuvent être appelées sélectivement de manière temporisée et peuvent être évaluées d'après (d), P(c) désignant la position géométrique des appareils de mesure de champ magnétique l'un par rapport à l'autre et par rapport au dispositif de brouillage.
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