Four Satellites, One Clock
In short: How a GPS receiver turns signal travel times from four satellites into a 3D position and a correction for its own clock.
A 2:01 short film in the series “How Things Work”, narrated by intellect_voice_01.
Sources used in this film: NASA (Space Communications and Navigation program), “GPS - NASA”; NOAA National Ocean Service (U.S. National Oceanic and Atmospheric Administration), “The Global Positioning System: Global Positioning Tutorial”; RF Wireless World, “GPS Satellites Explained: How They Work & What They”; Springer Nature (GPS Solutions journal), “Mitigating pseudorange noise using time-correlated noise estimation from time-differenced observations with an application to PPP - GPS Solutions”.
Sources used in this film
- NASA (Space Communications and Navigation program) — GPS - NASA · View →
- NOAA National Ocean Service (U.S. National Oceanic and Atmospheric Administration) — The Global Positioning System: Global Positioning Tutorial · View →
- RF Wireless World — GPS Satellites Explained: How They Work & What They · View →
- Springer Nature (GPS Solutions journal) — Mitigating pseudorange noise using time-correlated noise estimation from time-differenced observations with an application to PPP - GPS Solutions · View →
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Sources
- Summary by Intellect · source: GPS - NASA
- Also: NOAA National Ocean Service (U.S. National Oceanic and Atmospheric Administration): The Global Positioning System: Global Positioning Tutorial
- Also: RF Wireless World: GPS Satellites Explained: How They Work & What They
- Also: Springer Nature (GPS Solutions journal): Mitigating pseudorange noise using time-correlated noise estimation from time-differenced observations with an application to PPP - GPS Solutions
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