System and method for measuring a position of a moving object wi

Details System and method for measuring a position of a moving object wi System and method for measuring a position of a moving object wi

1987-06-25

1990-02-06

Chin, Gary

Boots, shoes, and leggings

364449, 342357, G06F 1550

Patent

active

048992852

ABSTRACT:
A system and method for measuring a position of a moving object such as a vehicle using a hybrid-type navigation apparatus. In the system and method, at least two measurement results of an electromagnetic wave position measuring apparatus (such as a GPS position measuring apparatus) are evaluated to determine whether they are reliable with respect to the those derived by an integration calculation position measuring apparatus incorporated in the system together with the electromagnetic wave position measuring apparatus on the basis of the corresponding measurement results by means of the integration calculation position measuring apparatus. When they are determined to be highly reliable, a measurement result of the electromagnetic wave position measuring apparatus subsequent to those evaluated is set to a reference position on the basis of which the integration calculation position measuring apparatus measures the position of the moving object. Consequently, a highly reliable measurement of the position of the moving object can always be achieved.

REFERENCES:
patent: 4254465 (1981-03-01), Land
patent: 4402049 (1983-08-01), Gray
patent: 4405986 (1983-09-01), Gray
patent: 4630056 (1986-12-01), Noguchi et al.
patent: 4672382 (1987-06-01), Fukuhara et al.
patent: 4713767 (1987-12-01), Sato et al.
patent: 4731613 (1988-03-01), Endo et al.

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