NDLI: HF radar wave measurements in the presence of ship echoes

Content Provider	IEEE Xplore Digital Library
Author	Gurgel, K.-W. Schlick, T.
Copyright Year	2005
Description	Author affiliation: Inst. fur Meereskunde, Univ. Hamburg, Germany (Gurgel, K.-W.; Schlick, T.)
Abstract	HF radar is an important tool to remotely measure oceanographic parameters like currents and waves from shore over large areas up to 6500 km/sup 2/. Maps of these parameters can be obtained 3 times per hour. In areas of high ship traffic, there are ship echoes within the radar backscatter signal, which can appear in the frequency bands of the Doppler spectrum which are used to extract current- and wave information. While the current speed is derived from the first-order Bragg peaks, wave height and direction is calculated from the second-order bands around the first-order peaks. The second-order bands require 15 to 20 times the bandwidth of the first-order peaks and their amplitude is about 20 dB lower. Due to these facts, ship echoes can cause problems especially to wave algorithms. This paper discusses the special signatures of ship echoes and shows possibilities to identify and to track ships.
Starting Page	937
Ending Page	941
File Size	886683
Page Count	5
File Format	PDF
ISBN	0780391039
DOI	10.1109/OCEANSE.2005.1513182
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-06-20
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Hafnium Radar measurements Marine vehicles Sea measurements Area measurement Current measurement Doppler radar Backscatter Frequency Data mining
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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