Direction finder

Details Direction finder Direction finder

1987-10-08

1989-06-20

Chin, Gary

Boots, shoes, and leggings

36457104, 364457, 33356, G01C 1738

Patent

active

048414492

ABSTRACT:
A direction finder includes a correction amount amending means which amends automatically correction amounts necessary to cancel out an influence of varying magnetization field of a vehicle on the basis of magnetic detection signals obtained before and after the vehicle changes its moving direction by an angle larger than a predetermined value.

REFERENCES:
patent: 4414753 (1983-11-01), Moulin et al.
patent: 4416067 (1983-11-01), Scherer et al.
patent: 4546550 (1985-10-01), Marchent et al.
patent: 4672565 (1987-06-01), Kuno et al.
patent: 4729172 (1988-03-01), Alberter et al.
patent: 4733179 (1988-03-01), Bauer et al.
patent: 4738031 (1988-04-01), Alberter et al.

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