Navigator and method for reducing consumption current thereof
US7953553B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 7, 2008 |
| Grant date | May 31, 2011 |
| Priority date | — |
| Expiry date | Nov 28, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/34
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Provided is a navigator, which reduces current consumption in a gap of an orbiting GPS satellite signal. A method for reducing the current consumption of the navigator is disclosed. The method includes measuring the strength of a geostationary GPS satellite signal; stopping the tracking of an orbiting GPS satellite signal when the measured geostationary GPS satellite signal strength is less than a critical value and such a state passes a preset time; performing a navigation mode where an orbiting GPS satellite signal and a geostationary GPS satellite signal are tracked when the measured geostationary GPS satellite signal strength exceeds the critical value. The navigator reads a gap of an orbiting GPS satellite signal using a geostationary GPS satellite signal and stops tracking the orbiting GPS satellite signal in the gap, thereby reducing its current consumption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.