Vehicle navigation system and method using GPS velocities
US6029111A · kind A · utility
161Cited by
73References
28Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 28, 1995 |
| Grant date | Feb 22, 2000 |
| Priority date | — |
| Expiry date | Dec 28, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/49
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The improved vehicle navigation system can take advantage of the recent availability of low cost micro-machined and piezoelectric sensors, and partially overcomes the low dynamics and line of sight limitations of GPS receivers without resorting to the hard wired approach described above. The low cost sensors introduce system level errors due to their inherent DC offset and drift rates. The improved vehicle navigation system minimizes both the sensor induced errors and GPS low dynamic limitations by using a zero motion detection system as a self contained (within the navigation system), vehicle independent device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.