SBG Systems outlines what GNSS is, how it works, and also dives into potential sources of errors in GNSS in this first instalment of the company’s “Mastering Accuracy” series of articles. Read more >>
In the full article, they go on to outline:
- What is GNSS?
- GNSS fundamental principle: Trilateration
- Signals emitted by the satellites
- Measuring distance to the satellite: code and carrier phase
- Satellite-to-receiver range computation with PRN Code
- Satellite-to-receiver range improvement: Carrier phase measurement
- Sources of errors in GNSS
- Satellite errors
- Atmospheric errors
- Receiver errors
The company asserts that these errors should be accounted for, mitigated using a specific error model, or estimated by the navigation filter to ensure optimal navigation. Many other error terms are not listed in this article, such as tidal effects or relativistic effects, and should also be considered for during position computation.
Read the full article, or visit the SBG Systems website for more information.
