크기가 다른 7개의 탄화 텅스텐 구를 이용한 Chirp 소너 시스템의 교정Calibration of a Chirp Sonar System Using Seven Tungsten Carbide Spheres of Different Sizes
- Other Titles
- Calibration of a Chirp Sonar System Using Seven Tungsten Carbide Spheres of Different Sizes
- Authors
- 이대재; 이경훈; 정봉규; 강희원
- Issue Date
- 2022
- Publisher
- 한국수산과학회
- Keywords
- Acoustic calibration; Broadband echo sounder; Specular wave; Tungsten-carbide spheres; Chirp transducer
- Citation
- 한국수산과학회지, v.55, no.2, pp 207 - 217
- Pages
- 11
- Indexed
- KCI
- Journal Title
- 한국수산과학회지
- Volume
- 55
- Number
- 2
- Start Page
- 207
- End Page
- 217
- URI
- https://scholarworks.gnu.ac.kr/handle/sw.gnu/2318
- DOI
- 10.5657/KFAS.2022.0207
- ISSN
- 0374-8111
- Abstract
- The accurate calibration of broadband echo sounders is essential for providing high quality acoustic information for fisheries applications. The increased range resolution of broadband echo sounder systems improves the detection and characterization of targets near boundaries, such as fish near the seabed. Most echo sounder systems are calibrated using tungsten-carbide (WC) spheres. For accurate calibration, it is necessary to select WC spheres of optimized diameters used frequently to calibrate echo sounder systems. For these purposes, the measured and simulated target strength (TS) data for seven WC spheres of different sizes were compared across a bandwidth of 100–200 kHz. The frequency-dependent TS pattern for the specular wave measured from two WC spheres using the fractional Fourier transform was also estimated and analyzed. Comparative results are presented for all the spheres and the best average precision of 0.15 dB was obtained for the 22 mm WC sphere.
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Collections - 해양과학대학 > Department of Maritime Police and Production System > Journal Articles
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