Odometer assisted GPS navigation method

Details Odometer assisted GPS navigation method Odometer assisted GPS navigation method

1994-08-01

1996-06-11

Issing, Gregory C.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a satellite

342457, 364449, G01S 502, G01S 302, G01C 2100

Patent

active

055259987

ABSTRACT:
An odometer assisted global positioning system (GPS) method operates in a vehicle to indicate the position of the vehicle. The vehicle has an odometer, a processor, and a GPS receiver. The method knows the last position of the vehicle and finds a measured Doppler and a measured pseudo range for each satellite of the GPS which is in line of sight with the vehicle. The processor determines the Doppler compensation to the measured Doppler. The processor combines the speed of the vehicle with the Doppler compensation to the measured Doppler in order to produce a new heading of the vehicle. The processor combines the last known position of the vehicle with the new heading and with the Doppler compensation and the measured pseudo range to provide a new position of the vehicle.

REFERENCES:
patent: 4231613 (1988-03-01), Endo et al.
patent: 5119101 (1992-06-01), Barnard
patent: 5416712 (1995-05-01), Geier et al.

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