Navigation system, GPS terminal and navigation method using supplementary data in broadcast radio wave signal
US6590527B2 · kind B2 · utility
5Cited by
3References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2001 |
| Grant date | Jul 8, 2003 |
| Priority date | — |
| Expiry date | Dec 28, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/25
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A navigation system is constructed to set up navigation function of a GPS terminal by using radio signals of broadcast station before receiving GPS signals from GPS satellites. A GPS monitor server receives on the ground GPS signals transmitted from GPS satellites, a FM multiplex broadcast station transmits, using the radio signals, GPS supplementary information including the Almanac and Ephemeris data in a navigation message of the GPS signals received by the GPS monitor server. A GPS terminal starts, upon reception of the GPS supplementary information, reception of the GPS signals transmitted from the GPS satellites.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.