A demonstration of precise calibration of tropospheric delay fluctuations with water vapor radiometers

The ability of water vapor radiometers (WVRs) to calibrate changes in tropospheric delay was demonstrated during very long baseline radio interferometer (VLBI) observations at Goldstone, California. WVR measurements reduced the observed VLBI delay variations over a 13 hr period by a factor of ≈2.5....

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Veröffentlicht in:	Geophysical research letters 1996-12, Vol.23 (25), p.3719-3722
Hauptverfasser:	Teitelbaum, L. P., Keihm, S. J., Linfield, R. P., Mahoney, M. J., Resch, G. M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Calibration Delay Earth, ocean, space Exact sciences and technology External geophysics Fluctuation Geophysics Geophysics. Techniques, methods, instrumentation and models Noise Radio interferometers Radiometers Water vapor
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container_end_page	3722
container_issue	25
container_start_page	3719
container_title	Geophysical research letters
container_volume	23
creator	Teitelbaum, L. P. Keihm, S. J. Linfield, R. P. Mahoney, M. J. Resch, G. M.
description	The ability of water vapor radiometers (WVRs) to calibrate changes in tropospheric delay was demonstrated during very long baseline radio interferometer (VLBI) observations at Goldstone, California. WVR measurements reduced the observed VLBI delay variations over a 13 hr period by a factor of ≈2.5. When applied to shorter time scales, a ≈50% reduction in 100–700 s delay variations was achieved during conditions of high tropospheric activity. Thermal WVR noise precluded calibration of short time scale delay fluctuations during quiet tropospheric conditions.
doi_str_mv	10.1029/96GL03309
format	Article
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Thermal WVR noise precluded calibration of short time scale delay fluctuations during quiet tropospheric conditions.</description><subject>Calibration</subject><subject>Delay</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>External geophysics</subject><subject>Fluctuation</subject><subject>Geophysics</subject><subject>Geophysics. 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M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A demonstration of precise calibration of tropospheric delay fluctuations with water vapor radiometers</atitle><jtitle>Geophysical research letters</jtitle><addtitle>Geophys. Res. Lett</addtitle><date>1996-12-15</date><risdate>1996</risdate><volume>23</volume><issue>25</issue><spage>3719</spage><epage>3722</epage><pages>3719-3722</pages><issn>0094-8276</issn><eissn>1944-8007</eissn><coden>GPRLAJ</coden><abstract>The ability of water vapor radiometers (WVRs) to calibrate changes in tropospheric delay was demonstrated during very long baseline radio interferometer (VLBI) observations at Goldstone, California. WVR measurements reduced the observed VLBI delay variations over a 13 hr period by a factor of ≈2.5. When applied to shorter time scales, a ≈50% reduction in 100–700 s delay variations was achieved during conditions of high tropospheric activity. 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subjects	Calibration Delay Earth, ocean, space Exact sciences and technology External geophysics Fluctuation Geophysics Geophysics. Techniques, methods, instrumentation and models Noise Radio interferometers Radiometers Water vapor
title	A demonstration of precise calibration of tropospheric delay fluctuations with water vapor radiometers
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