USBL Underwater Positioning Algorithm using Phase Spectrum

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Journal of the Korea Institute of Military Science and Technology 2000;3(1):85-91.

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위상 스펙트럼에 의한 USBL 수중위치 추정기법 연구

이용곤, 이상국, 도경철

국방과학연구소

Abstract

Underwater sensor accuracy test which measures the detection range and bearing accuracies of sonar simulates sonar transmitting ping and underwater radiating noise of target vessels. In this test, because the position of sonar target is the reference position of test, the sonar target position should be precisely estimated. Hence, this paper suggests to apply USBL algorithm which adopts cross phase spectrum of received sensor signals, and presents its performance by range and bearing estimation simulations. As a result of simulations, suggested algorithm shows good accuracy for underwater sensor accuracy test near 5㏈ SNR.

Key Words: Sonar Target, USBL(Ultra Short Base Line), Cross Phase Spectrum, Positioin Estimation