Designed method for satellite navigation signal system with mixed modulation of direct spread spectrum and frequency hopping
US12334973B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2025 |
| Grant date | Jun 17, 2025 |
| Priority date | — |
| Expiry date | Jan 16, 2045 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03898
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A design method for a satellite navigation signal system with mixed modulation of direct spread spectrum and frequency hopping includes: modulating the spread spectrum code sequence of multipath signal components; mixing and multiplexing with the signal components corresponding to the same frequency point; forming a baseband code sequence; separating signal components corresponding to the baseband code sequence to obtain separated radio frequency signals; recombining and modulating separated radio frequency signals; controlling the frequency hopping pattern by the frequency hopping code sequence if the separated radio frequency signals are authorized signals, and performing mixed frequency synthesis modulation; performing direct combined radio frequency modulation if the separated radio frequency signals are unauthorized signals, and obtaining the recombined signal component; amplifying the signal power to obtain the direct spread spectrum navigation signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.