Complete radio navigation receiver, particularly of the GPS type
US6175725A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 2, 1998 |
| Grant date | Jan 16, 2001 |
| Priority date | — |
| Expiry date | Oct 2, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J13/0022
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A receiver of modulated carrier-wave signals equipped with a pseudo-random code time marker, particularly for radio navigation, comprises coincidence modules each of which comprises chronometric memory media which receives a wanted signal, provides storage as data of the time offset of the code offset estimates and the frequency and phase carrier-wave status, and on that basis provides, with a local clock, a local carrier-wave image and that least one local code repeat for the relevant signal and code and carrier-wave slaving control functions providing correlation of the wanted signal and the local code repeat on the basis of a frequency and phase offset signal between the carrier-wave of the wanted signal and the carrier-wave image. It further comprises Fourier transformation media for reception of the offset signal and management/decision-making media which provide invalidation of time offset data where the Fourier transformation indicates the presence of energy outside of the vicinity of a central coincidence line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.