DEAD-RECKONING GUIDANCE SYSTEM AND METHOD WITH CARDINAL-DIRECTION BASED COORDINATE-CORRECTIONS

A dead-reckoning guidance system (10) determines a vehicle-speed (22) of the host-vehicle (12) based on wheel-signals (20) from the one or more wheel-sensors (18); determines a distance-traveled (24) by the host-vehicle (12) during a time-interval (36) since prior-coordinates (38) of the host-vehicl...

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Bibliographische Detailangaben
Hauptverfasser:	PHAM, Linh N, KNUTSON, Eric P, SPELL, David M
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES GYROSCOPIC INSTRUMENTS MEASURING MEASURING DISTANCES, LEVELS OR BEARINGS NAVIGATION PERFORMING OPERATIONS PHOTOGRAMMETRY OR VIDEOGRAMMETRY PHYSICS ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT SURVEYING TESTING TRANSPORTING VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	A dead-reckoning guidance system (10) determines a vehicle-speed (22) of the host-vehicle (12) based on wheel-signals (20) from the one or more wheel-sensors (18); determines a distance-traveled (24) by the host-vehicle (12) during a time-interval (36) since prior-coordinates (38) of the host-vehicle (12) were determined; determines a heading-traveled (48) of the host-vehicle (12) during the time-interval (36) since the prior-coordinates (38) of the host-vehicle (12) were determined; determines present-coordinates (40) of the host-vehicle (12) based on the distance-traveled (24) and the heading-traveled (48); determines when the vehicle-speed (22) is greater than a speed-threshold (52); determines when the heading-traveled (48) differs from a cardinal-direction (46) by both greater than a noise-threshold (54) and less than an angle-threshold (56); and in response to a determination that both the vehicle-speed (22) is greater than the speed-threshold (52) and that the heading-traveled (48) differs from the cardinal-direction (46) by both greater than the noise-threshold (54) and less than the angle-threshold (56), determines a coordinate-correction (42) to apply to the present-coordinates (40), said coordinate-correction (42) determined in accordance with the distance-traveled (24) and the cardinal-direction (46).