Method and system of real-time transmission and demodulation of beidou satellite navigation signals
US10921456B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2019 |
| Grant date | Feb 16, 2021 |
| Priority date | — |
| Expiry date | Oct 21, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/18513
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method of real-time transmission and demodulation of BeiDou satellite navigation signals, the method including: constructing a large-scale parallel signal transmission branch, grouping a satellite navigation message in a large scale and sequentially sending the grouped messages into the parallel signal transmission branch, obtaining a navigation satellite parallel transmission branch-dedicated sub-ranging code by using a non-linear function driven complex shift pseudo-random code generator and perform spectrum-spreading for the navigation message of each branch, performing modulation by same carrier with different frequency offsets, then forming a composite satellite navigation signal by superimposing carrier-modulated navigation signals of all branches and adding a noise, and sending the composite satellite navigation signal by a single antenna.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.