Apparatus for determining positional coordinates utilizing the t

Details Apparatus for determining positional coordinates utilizing the t Apparatus for determining positional coordinates utilizing the t

1979-09-14

1981-11-17

Martin, Jr., William D.

Measuring and testing

Navigation

Take-off and landing monitors

33 1M, 33342, 33352, 33361, G01C 2120

Patent

active

043003907

ABSTRACT:
Apparatus for determining the positional coordinates of a moving object including a plurality of magnetic field vector detecting devices, an inclination detecting device for detecting inclination of the magnetic field vector detecting devices, a distance detecting device for detecting the distance that the moving object has travelled, and arithmetic means which receives outputs from the magnetic field vector detecting devices as well as from the inclination detecting device, calculates the horizontal component force vector of the geomagnetic field by using the outputs from the magnetic field vector detecting devices and from the inclination detecting device, further calculates the vector in the progress direction of the moving object by referring to the horizontal component force vector, and integrates the product of the vector in the progress direction and the output from the distance detecting device, whereby the positional coordinates are obtained as the output of the arithmetic means, and the coordinates which have been set at an arbitrary point are replaced by the newly determined coordinates when turning to the right or left is carried out at the arbitrary point correctly as ordered.

REFERENCES:
patent: 2464057 (1949-03-01), Phair
patent: 3183603 (1965-05-01), Trenchard
patent: 3355942 (1967-12-01), Freeman
patent: 3744312 (1973-07-01), Anderson
patent: 3936949 (1976-02-01), Devand
patent: 3991361 (1976-11-01), Matter et al.
patent: 4179741 (1979-12-01), Rossani

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