Method and device for generating a constant envelope navigation signal with four independent codes
US7561103B2 · kind B2 · utility
3Cited by
8References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 12, 2003 |
| Grant date | Jul 14, 2009 |
| Priority date | — |
| Expiry date | Jan 4, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and a device for generating a modulated navigation signal which is intended to be used to position a downlink receiver. Four pseudorandom navigation codes of chip rhythms greater than 0.5 MHz are modulated onto a carrier of frequency greater than 500 MHz according to an 8-PSK modulation of constant amplitude with a modulation frequency fM such that: 8fc≦fM where fc=Max(fci), and fci designates the chip rhythms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.