Page 363 - The Mechatronics Handbook

FIGURE 17.14 Frequency stability of GPS receiver.

17.5 Closing

As noted earlier, time and frequency standards and measurements have improved by about nine orders
of magnitude in the past 100 years. This rapid advance has made many new products and technologies
possible. While it is impossible to predict what the future holds, we can be certain that oscillator Qs will
continue to increase, measurement uncertainties will continue to decrease, and new technologies will
continue to emerge.

References
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U.S. Government Printing Office, Washington, DC, 1990.
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Physics Teachers, College Park, Maryland, 1996.
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