Process for the autonomous reduction of acquisition and tracking thresholds of carriers received in orbit
US6147641A · kind A · utility
4Cited by
3References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 12, 1997 |
| Grant date | Nov 14, 2000 |
| Priority date | — |
| Expiry date | Nov 12, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/10
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a process for the autonomous reduction of acquisition and tracking thresholds of carriers received in orbit by a receiver accessing an orbital navigator inside or outside said receiver, the latter having at least one phase loop. The phase loop, which is responsible for the acquisition and/or tracking of the carrier, is "pushed" by the fine speed aid and takes up the error between the real speed and the calculated speed. The search for the Doppler frequency of the carrier received takes place around a frequency prediction maintained by the fine speed aid coming from the orbital navigator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.