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Status Of Hf Radars For Wave Height Directional Spectral Measurements
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Book Synopsis Status of HF Radars for Wave-Height Directional Spectral Measurements by : Donald E. Barrick
Download or read book Status of HF Radars for Wave-Height Directional Spectral Measurements written by Donald E. Barrick and published by . This book was released on 1982 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: This manuscript is a concise review of the status of high-frequency (HF) radars for measuring various descriptors of the ocean wave-height directional spectrum. It is not intended as a historical account of the many developments and contributors to the subject over the past three decades, nor is it meant to develop the theory and techniques of HF radar in sufficient detail for planning HF radar programs. Finally, no attempt is made to review every MF/ HF experiment performed or analyzed, although several very clever techniques have been tried (e.g., bistatic arrangements, synthetic aperture systems, and balloon-borne antennas); rather, techniques are discussed that appear to have potential for practical, operational ocean monitoring. The next section reviews very briefly the principles of HF radar sea echo that make it possible to measure the wave-height directional spectrum. The section following discusses the capability and status of sky-wave (over-the-horizon) radar for making wide- area ocean surface measurements. The final section discusses the application of HF ground-wave radars to measuring the wave-height directional spectrum, both for coastal use and for deployment from offshore platforms or ships, and their accuracy. In all cases, the limitations as well as the advantages of HF radars are indicated.
Book Synopsis Direction and Frequency Resolution in HF Radar Directional Wave Spectra Measurements by : Lucy Rhiannon Wyatt
Download or read book Direction and Frequency Resolution in HF Radar Directional Wave Spectra Measurements written by Lucy Rhiannon Wyatt and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Prospects for Operational HF Radar Measurements of the Ocean Wave Directional Spectrum by : Lucy Rhiannon Wyatt
Download or read book Prospects for Operational HF Radar Measurements of the Ocean Wave Directional Spectrum written by Lucy Rhiannon Wyatt and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measuring Ocean Waves written by and published by National Academies. This book was released on 1982 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measuring and Understanding Coastal Processes by : National Research Council
Download or read book Measuring and Understanding Coastal Processes written by National Research Council and published by National Academies Press. This book was released on 1989-02-01 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Much of the U.S. coastline is rapidly changingâ€"mostly eroding. That fact places increasing pressure on the planners and managers responsible for coastal development and protection, and could have a direct effect on many of the 125 million Americans living within 50 miles of the coast who rely on its resources and beaches for their livelihood or recreation. Although rapid advances have been made in the measurement systems needed to understand and describe the forces and changes at work in the surf-zone environment, their potential for allowing more accurate and reliable planning and engineering responses has not been fully realized. This book assesses coastal data needs, instrumentation, and analyses, and recommends areas in which more information or better instrumentation is needed.
Book Synopsis Proposal to Demonstrate an HF Radar System for Measuring the Ocean-wave Directional Spectrum from Offshore Platforms by :
Download or read book Proposal to Demonstrate an HF Radar System for Measuring the Ocean-wave Directional Spectrum from Offshore Platforms written by and published by . This book was released on 1981 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The High Frequency Surface Wave Radar Cross Section for Ocean Swell by : Chengxi Shen
Download or read book The High Frequency Surface Wave Radar Cross Section for Ocean Swell written by Chengxi Shen and published by . This book was released on 2013 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comparison of Wave Parameters and Spectra Between Wera Hf Radars and Tri-axys Buoys by : Mei Wang
Download or read book Comparison of Wave Parameters and Spectra Between Wera Hf Radars and Tri-axys Buoys written by Mei Wang and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: To establish the credibility of surface wave measurements from two phased-array WERA HF (High Frequency) radars, SEACOOS (SouthEast Atlantic Coastal Ocean Observing System) funded the Mini-Waves experiment from March to May, 2005. For this study, the surface wave parameter (significant wave height) and directional wave spectrum obtained from two WERA radars were compared with those obtained from two Tri-Axys buoys during the same period. The Wyatt (1990) method was used to obtain the directional wave spectra, and significant wave heights were obtained by integrating the directional wave spectra over all directions and the selected frequency band. The SWAN (Simulating WAve Nearshore) directional wave model was used to evaluate the comparison results between WERA radars and buoys. There was a good agreement between WERA radars and Tri-Axys buoys when the echo-Doppler spectrum had a high 2nd-order SNR (signal-to-noise) ratio. The measurements didn2t agree in low sea states when the echo-Doppler spectrum had a lower SNR. Also, strong horizontal current shear caused by Florida Current (FC) had an effect on wave propagation direction. To improve the quality of WERA radar wave measurements, a longer sampling interval (10-minute interval) and procedures to remove the effect of RFI are needed.
Download or read book Earth Resources written by and published by . This book was released on 1983 with total page 758 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Directional Properties of Surface Waves Observed With HF Radar by :
Download or read book Directional Properties of Surface Waves Observed With HF Radar written by and published by . This book was released on 2003 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of the work at Sheffield is to demonstrate that wave measurements obtained using HF radars are of sufficient accuracy and availability for them to contribute to the investigation of changes to the directional spectrum of waves subject to meteorological bathymetric and current variability in coastal environments for both scientific and operational applications. This report summarizes the measurements made with the OSCR HF radar in collaboration with the University of Miami, during the SHOWEX experiment in fall 1999 using inversion algorithms developed at the University of Sheffield. The data set obtained contains interesting examples of shoaling waves and fetch limited wave development but the amount of data obtained was limited by the hardware constraints of the OSCR system. Comparisons with directional wave buoys confirmed the results of earlier work that signal-to-noise and antenna sidelobes are the main sources of error in the radar wave measurements.
Book Synopsis Remote Sensing of the Directional Ocean Wave Spectra Using HF Backscatter Radar by : Abdelrahman M. Elabdalla
Download or read book Remote Sensing of the Directional Ocean Wave Spectra Using HF Backscatter Radar written by Abdelrahman M. Elabdalla and published by . This book was released on 1982 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of Ocean Wave Spectra Using a Ship-mounted HF Radar by :
Download or read book Measurement of Ocean Wave Spectra Using a Ship-mounted HF Radar written by and published by . This book was released on 1990 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: A promising alternative to in situ methods such as wave buoys for measuring ocean wave spectra is HF ground wave radar. This paper describes an algorithm used to extract the nondirectional wave-height spectrum from the backscatter return of a stationary ship- or rig-mounted radar employing an omnidirectional antenna for both transmission and reception. To test the effectiveness of the algorithm, its estimates are compared to those of a WAVE-TRACK buoy using data collected onboard CFAV Quest during 1988.
Book Synopsis Measuring Ocean Waves by : NATIONAL RESEARCH COUNCIL WASHINGTON DC MARINE BOARD.
Download or read book Measuring Ocean Waves written by NATIONAL RESEARCH COUNCIL WASHINGTON DC MARINE BOARD. and published by . This book was released on 1981 with total page 259 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents: Operational Needs for Wave Data; Research Needs for Wave Data; Survey of Remote Sensing Techniques for Wave Measurement; Remote Sensing of Ocean Waves by Surface Contour Radar; The Use of Synthetic Aperture Radar (SAR) to Measure Ocean Gravity Waves; Status of HF Radars for Wave-Height Directional Spectral Measurements; Aircraft and Satellite Measurement of Ocean Wave Directional Spectra Using Scanning-Beam Microwave Radars; Review of Wave Measurement Using In Situ Systems; Wave Measurements Using Surface-Mounted Instruments; Pitch-Roll Buoy Wave Directional Spectra Analysis; Subsurface Wave-Measuring Systems; Wave-Measurement Technology in the 1980s; Workshop Sessions.
Book Synopsis Quarterly Literature Review of the Remote Sensing of Natural Resources by :
Download or read book Quarterly Literature Review of the Remote Sensing of Natural Resources written by and published by . This book was released on 1987 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analysis Methods for Narrow-beam High-frequency Radar Sea Echo by : Belinda J. Lipa
Download or read book Analysis Methods for Narrow-beam High-frequency Radar Sea Echo written by Belinda J. Lipa and published by . This book was released on 1982 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Operational Oceanography by : N.C. Flemming
Download or read book Operational Oceanography written by N.C. Flemming and published by Elsevier. This book was released on 2002-06-05 with total page 573 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Global Ocean Observing System (GOOS) is an international programme for a permanent global framework of observations, modelling and analysis of ocean variables that are needed to support operational services around the world. The EuroGOOS strategy has two streams: the first is to improve the quality of marine information in European home waters, and the second is to collaborate with similar organisations in other continents to create a new global ocean observing and modelling system that will provide the open ocean forecasts needed to achieve the best possible performance by local marine information services everywhere. EuroGOOS held its second international conference in The Hague in 1999. Here, the operational services already in place in the EuroGOOS regions were presented and evaluated. In addition, a "Forward Look" was presented, with targets for the next 5-10 years. The proceedings of the first EuroGOOS conference were published by Elsevier in the /locate/inca/600827EOS Series No. 62 Editors: Stel et al, ISBN 0-444-82892-3.
