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DTIC ADA483323: A Systems-Level Analysis of the JHU/APL Time and Fr... |
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by Defense Technical Information Center |
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In past years, we have reported on continuous improvement |
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in the operation of the master clock of our Time and |
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Frequency Laboratory at the Johns Hopkins University |
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Applied Physics Laboratory. We have discussed our |
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ensemble of hydrogen maser and cesium beam atomic |
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frequency standards into an autonomous timescale that |
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maintains UTC (JHU/APL) within + or - 20 ns per month of |
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UTC. This year, since completing the major aspects of our |
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laboratory refurbishment, we have undertaken systems |
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analysis toward optimization and improved timekeeping. In |
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our paper, we will describe the system of clocks, control |
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mechanisms, and their relationship that maintain our |
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laboratory's accuracy. One outcome will describe the |
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determination of our worst performing clock through |
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frequency characterization and the performance |
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improvement in the UTC (JHU/APL) timescale through |
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selectively weighting its contribution. |
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Date Published: 2018-06-23 06:39:29 |
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Identifier: DTIC_ADA483323 |
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Item Size: 6986521 |
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Language: english |
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Media Type: texts |
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# Topics |
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DTIC Archive; Miranian, Mihran; JOHNS... |
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