Signal synchronization method for depth information transmission of high-speed underwater vehicle

Joo-Hyoung Lee; Geun-Hyeok Lee; Jeong-Ha An; Ki-Man Kim; Min-Su Han; Seong-Yong Kim

doi:10.7776/ASK.2020.39.2.069

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2020 Vol.39, Issue 2 Next Page

Research Article

Signal synchronization method for depth information transmission of high-speed underwater vehicle 고속 수중 이동체의 심도 정보 전송을 위한 신호 동기화 기법

31 March 2020. pp. 69-76

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Abstract

This paper deals with a method of transmitting depth information of a high-speed underwater vehicle. The depth information signal transmitted from the high-speed mobile object is received with high frequency variability. In the proposed method, we apply not only frequency synchronization but also additional synchronization on the time axis like the existing method. In the case of a Doppler frequency bank with less resolution than the conventional method through simulations performed in the environment moving up to 50 kn, and the depth information is recovered using the proposed method, the error rate of 6 % ~ 9 % is reduced to 0.2 % ~ 1 %.

Keywords

Doppler frequency shift

High-speed underwater vehicle

Position estimation

Underwater acoustic communication

본 논문은 수중 고속 이동체의 심도 정보를 전송하는 방법을 다룬다. 고속 이동체로부터 전송되는 심도 정보 신호는 높은 주파수 변동성을 갖고 수신된다. 제안한 방법에서는 기존의 방법처럼 주파수 동기화뿐만 아니라 시간 축에서 추가로 동기화 하는 방법을 적용하였다. 최대 50 kn로 이동하는 환경에서 수행된 모의실험을 통하여 기존의 방법보다 낮은 해상도를 갖는 도플러 주파수 뱅크를 형성하고, 제안한 방법을 사용하여 심도 정보를 복구한 경우 기존에 6 % ~ 9 %이었던 오류율이 0.2 % ~ 1 %로 낮아진 오류 성능을 나타내었다.

키워드

도플러 주파수 천이

수중 고속 이동체

위치 추정

수중음향통신

References

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Information

Publisher :The Acoustical Society of Korea
Publisher(Ko) :한국음향학회
Journal Title :The Journal of the Acoustical Society of Korea
Journal Title(Ko) :한국음향학회지
Volume : 39
No :2
Pages :69-76
Received Date : 2019-11-25
Revised Date : 2020-01-06
Accepted Date : 2020-02-13
DOI :https://doi.org/10.7776/ASK.2020.39.2.069

The Journal of the Acoustical Society of Korea ISSN:1225-4428(Print) 2287-3775(Online) 한국음향학회지

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