Satellite-based positioning receiver with correction of cross correlation errors
US7064707B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 18, 2003 |
| Grant date | Jun 20, 2006 |
| Priority date | — |
| Expiry date | Jul 18, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a satellite-based positioning receiver receiving signals from different satellites, comprising a correlation channel Cii per satellite received, each correlator channel Cii comprising: a correlation path, in-phase and quadrature, between the signal received and two respective local quadrature carriers (sine, cosine) generated by an oscillator with digital control of carrier; a code correlation path based on the signals I, Q output by the carrier correlation path, with the local codes provided by a digital generator of local codes; an integrator for providing, for each local code, signals Ic Qc at the output of the correlator channel Cii of the satellite received, c designating each of the local codes, the receiver according to the invention comprises, for each correlator channel of the signal received from a satellite, as many additional correlator channels as additional satellites received, and the local punctual code of the satellite received is correlated with the local codes of the other additional satellites.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.