How to Make a Multi-Billion Dollar Thermometer

Autor/in	Baird, William H.
Titel	How to Make a Multi-Billion Dollar Thermometer
Quelle	In: Physics Education, 57 (2022) 2, Artikel 025003 (4 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0031-9120
Schlagwörter	Physics; Geographic Information Systems; Navigation (Information Systems); Handheld Devices; Measurement Equipment; Internet; Data Collection; Measurement Techniques + Suchen Sie Ihr Suchwort? Physik; Messinstrument; Data capture; Datensammlung; Messtechnik
Abstract	The United States' Global Positioning System (GPS), and similar geolocation systems such as Galileo, GLONASS, and Beidou are used by people all over the globe. Modern receivers of these global navigation satellite systems can track multiple satellites from different constellations. Casual, non-technical users are probably aware that the positional information provided is typically accurate to within a few meters. We could expect physics students to infer that, because these systems rely on the travel time of radio signals, this implies time measurement accuracy on the scale of tens of nanoseconds. This feature has led to GPS-enabled Internet time servers providing stratum 1 accuracy for under $1000. In this paper, we will show that we can couple a GPS unit to a field programmable gate array (FPGA) to determine the temperature in a room. The more serious application of this GPS-FPGA pairing is to provide precise time-stamping of events, thereby synchronizing data collection between stations across a room or across the globe. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2024/1/01