Zobrazeno 1 - 10
of 107
pro vyhledávání: '"William C. Keller"'
Publikováno v:
Journal of Hydraulic Engineering. 131:657-664
Time series of surface velocity and stage have been collected simultaneously. Surface velocity was measured using an array of newly developed continuous-wave microwave sensors. Stage was obtained from the standard U.S. Geological Survey (USGS) measur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ede2d96b3faa20ee42b9bc0f9bb6ada8
https://doi.org/10.1061/(asce)0733-9429(2005)131:8(657)
https://doi.org/10.1061/(asce)0733-9429(2005)131:8(657)
Publikováno v:
Journal of Atmospheric and Oceanic Technology. 22:832-846
A coherent, X-band airborne radar has been developed to measure wind speed and direction simultaneously with directional wave spectra on the ocean. The coherent real aperture radar (CORAR) measures received power, mean Doppler shifts, and mean Dopple
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e2d7e3653cb628e77bf84920446f47e
https://doi.org/10.1175/jtech1724.1
https://doi.org/10.1175/jtech1724.1
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 43:1242-1257
River surface currents have been measured using coherent microwave systems from a bridge, a cableway, several riverbanks, a helicopter, and an airplane. In most cases, the microwave measurements have been compared with conventional measurements of ne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12ef4e35f75b22a35899d748211dfec0
https://doi.org/10.1109/tgrs.2005.845641
https://doi.org/10.1109/tgrs.2005.845641
Publikováno v:
Flow Measurement and Instrumentation. 13:271-276
This paper presents and applies an improved method of determining cross-sectional depth and discharge of a river. The method used with the universal law and Darcy-Weisbach friction factors to obtain the lateral variation of the roughness height. This
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::949bf1dda5140bd6c1edf411fa661f2e
https://doi.org/10.1016/s0955-5986(02)00052-3
https://doi.org/10.1016/s0955-5986(02)00052-3
Publikováno v:
Flow Measurement and Instrumentation. 13:265-270
This article describes a non-contact method for measuring surface velocity and discharge in a natural channel. The X-band pulse (9.36 GHz) radar, developed by the Applied Physics Laboratory of the University of Washington, was used to scan instantane
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::674c63804fad71360edc766fff123946
https://doi.org/10.1016/s0955-5986(02)00048-1
https://doi.org/10.1016/s0955-5986(02)00048-1
Publikováno v:
Journal of Atmospheric and Oceanic Technology. 19:100-113
Coincident measurements with a 37-GHz polarimetric radiometer and a 10-GHz scatterometer during the Coastal Ocean Probing Experiment (COPE) in September and October of 1995 offered a unique opportunity to compare their relative sensitivity and perfor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e0b8aa3a43dabb9d3909fa0f3ef04833
https://doi.org/10.1175/1520-0426(2002)019<0100:cosarw>2.0.co
https://doi.org/10.1175/1520-0426(2002)019<0100:cosarw>2.0.co
Autor:
E. Michael Thurman, Nick B. Melcher, Ralph T. Cheng, F. Peter Haeni, William J. Plant, William C. Keller, Kurt R. Spicer, John E. Costa
Publikováno v:
Geophysical Research Letters. 27:553-556
This report describes an experiment to make a completely non-contact open-channel discharge measurement. A van-mounted, pulsed doppler (10GHz) radar collected surface-velocity data across the 183-m wide Skagit River, Washington at a USGS streamgaging
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8913ade742c2d27d59b85103c0d4f202
https://doi.org/10.1029/1999gl006087
https://doi.org/10.1029/1999gl006087
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 38:64-72
Measurements of the normalized radar cross section of the sea at K/sub u/ band at an incidence angle of 10/spl deg/ were performed from a manned airship off the Oregon coast in September and October of 1993. The cross section at this incidence angle
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::86dad9ce64123700b2daeb7304db1ff9
https://doi.org/10.1109/36.823902
https://doi.org/10.1109/36.823902
Publikováno v:
Journal of Geophysical Research: Oceans. 104:25853-25866
We report simultaneous microwave and acoustic Doppler backscattering measurements made in a wind-wave tank. The microwave system operated at 35 GHz (0.857 cm), while the acoustic system transmitted at 190 kHz (0.777 cm). The two systems were mounted
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f75cf1cc0483a87363fe51f883ad5979
https://doi.org/10.1029/1999jc900168
https://doi.org/10.1029/1999jc900168
Autor:
Vahid Hessany, William J. Plant, David E. Weissman, Kenneth A. Hayes, William C. Keller, Karl W. Hoppel
Publikováno v:
Journal of Geophysical Research: Oceans. 104:11173-11191
Measurements of atmospheric fluxes of heat, moisture, and momentum were made simultaneously and coincidentally with microwave backscatter measurements from an airship flown over the Pacific Ocean in 1993. The measurement technique was well suited to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eaff1c639d4c62fe3e18dc07c043d341
https://doi.org/10.1029/1999jc900038
https://doi.org/10.1029/1999jc900038