On 11/28/21 8:03 PM, Tom Van Baak wrote:
Jim,
For state of the art numbers and plots, here's a recent (2020) paper:
"A Review of Contemporary Atomic Frequency Standards",
by Bonnie Schmittberger, David Scherer
https://arxiv.org/abs/2004.09987
https://arxiv.org/pdf/2004.09987.pdf
It also has plots comparing clock stability vs. size and vs. power.
Highly recommended reading.
There is also a power point version with similar content as the paper:
https://www.gps.gov/cgsic/meetings/2019/scherer.pdf
/tvb
On 11/28/2021 2:05 PM, Lux, Jim wrote:
Speaking of which, does anyone have a link to a "current state of the
art" graph.
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Awesome, these are a good start.
It's nice to have a figure to put in to reports and presentations.
(Larry Young, recently retired from JPL who is a GNSS guru, had a hand
drawn graph that he'd update over the years pasted into his notebook)
DSAC is shown as 10 liters (which is about how big it actually is) - I
remember when John Prestage was talking about the 1 liter atomic clock
more than 10 years ago, but that's the size of the physics package on
the bench, and comparing to USOs. That was before it was "flight ready".
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