한국 동해에서 토모그래피용 신호를 이용한 음파 도달시간의 시변동성
- Title
- 한국 동해에서 토모그래피용 신호를 이용한 음파 도달시간의 시변동성
- Other Titles
- Temporal Variability of Acoustic Arrivals in the East Sea of Korea Using Tomographic Method
- Author
- 나정열
- Keywords
- Ocean acoustic tomography; Temporal variability; East Sea of Korea; Coherence; Time spread
- Issue Date
- 2001-07
- Publisher
- 한국음향학회
- Citation
- 한국음향학회지, v. 20, issue. 5, page. 92-99
- Abstract
- To measure temporal variability of long- range transmission in northern part of the East Sea of Korea, low frequency acoustic sources were deployed on the continental shelf 0.4km south of Cape Shultz near the port of Vladivostok during October 1999. The transmissions of the phase modulated signals were recorded by VLA moored on the northern slope of Ulleung-do. The measured signals were processed for the acoustic arrivals and their variability in time. The temporal signal processing involves pulse compression of the phase-encoded signal, time spread and temporal coherence processing. Variability of the ocean sound speed field in time scales of short period seems to be dominated by random fluctuations caused by sound speed perturbation due to the vertical displacements associated with internal waves.
- URI
- https://www.koreascience.or.kr/article/JAKO200111921140500.pagehttps://repository.hanyang.ac.kr/handle/20.500.11754/160371
- ISSN
- 1225-4428; 2287-3775
- Appears in Collections:
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > MARINE SCIENCE AND CONVERGENCE ENGINEERING(해양융합공학과) > Articles
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