Patent · US Active

Tightly coupled GPS and dead-reckoning vehicle navigation

US8374785B2 · kind B2 · utility

9Cited by
13References
10Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJan 28, 2010
Grant dateFeb 12, 2013
Priority date—
Expiry dateMay 21, 2031

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01S19/47
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A tightly coupled GPS and dead-reckoning system collects wheel speed transducer data over a vehicle's network to compute vehicle range and direction. The dead-reckoning bridges over gaps in navigation solutions that would otherwise occur when GPS signal transmission is lost in tunnels, parking garages, and other common situations. Continual calibration of the wheel radii and compensation for speed effects are calculated from GPS position fixes, and such improves the performance and accuracy of dead-reckoning during long outages of GPS signal reception. When the GPS signals are restored, the dead-reckoning solutions provide a high quality starting place for the GPS receiver to search around.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.