Processing

Please wait...

Settings

Settings

Goto Application

1. AU1998066176 - Geomagnetic field direction measuring system

Office Australia
Application Number 66176/98
Application Date 30.01.1998
Publication Number 1998066176
Publication Date 15.10.1998
Publication Kind A
IPC
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/-G01C19/104
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
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
Inventors Gnepf, Silvio
Ramseier, Ernst
Priority Data 19704956 10.02.1997 DE
Title
(EN) Geomagnetic field direction measuring system
Abstract
(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.