Movement detecting device
US5828987A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1997 |
| Grant date | Oct 27, 1998 |
| Priority date | — |
| Expiry date | Apr 22, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/52
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A movement detecting device capable of accurately measuring the position, the speed and the azimuth of a moving object, such as a vehicle, by using GPS signals without applying a particular alteration to the moving object, is purposed. For realizing it, in an arithmetic control section 3, especially in a speed arithmetic processing section 41, an azimuth arithmetic processing section 42 and a position arithmetic processing section 43, data about relationship between the absolute speed, etc. based on the GPS signals and the relative speed, etc. based on an inertia sensor 5 are derived when the GPS signals are normally received, and data about the actual speed and azimuth of the moving object are derived using the foregoing data about the relationship and the relative speed, etc. when the GPS signals are not received.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.