GNSS and positioning

How GPS, Galileo, GLONASS, BeiDou and NavIC actually deliver a position.

Scope

• Trilateration, pseudoranges and receiver clock bias
• The constellation architectures compared
• Error sources: ionosphere, troposphere, multipath, ephemeris
• Differential GNSS, RTK and precise point positioning
• Integrity, jamming and spoofing

Notes

Nothing written here yet. Working notes go in Research and Learning Lab; anything that becomes durable is promoted onto this page.

References

To be added as the topic is worked through.