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
G01C21/04—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by terrestrial means
G01C21/08—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by terrestrial means involving use of the magnetic field of the earth
Landscapes
Engineering & Computer Science
(AREA)
Remote Sensing
(AREA)
Radar, Positioning & Navigation
(AREA)
Life Sciences & Earth Sciences
(AREA)
Environmental & Geological Engineering
(AREA)
General Life Sciences & Earth Sciences
(AREA)
Geology
(AREA)
Automation & Control Theory
(AREA)
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated
(AREA)