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Accuracy of PPS signals from a single GPS module: (top) C 1,1 P A ,... | Download Scientific Diagram
GitHub - beta-tester/RPi-GPS-PPS-StratumOne: setup a Raspberry Pi as a Stratum One time server (GPS with PPS)
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Accuracy and Integrity | The Global Positioning System: A Shared National Asset | The National Academies Press
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