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Published on: November 20, 2017
Passive depth estimation for a narrowband source using a single vector sensor in deep water
1Key Laboratory of Underwater Acoustic Environment, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, Chinalihe930626@mail.ioa.ac.cn, wangtong18@mail.ioa.ac.cn, sulin807@mail.ioa.ac.cn, guoxinyi@mail.ioa.ac.cn, wangche@mail.ioa.ac.cn, mali@mail.ioa.ac.cn.
Abstract:
For a narrowband signal, an oscillating interference pattern is formed with a target's moving when receiving at the bottom of the sea. In this Letter, the interference pattern of a narrowband source is observed using a single vector sensor (SVS). A passive depth estimation method employing a SVS is proposed. This approach processes the signals after the adaptive line enhancing and extracts the vector intensity, which oscillates periodically with the vertical azimuth. The passive estimation is achieved based on the Fourier-transform relationship between the depth and interference period. The simulation and sea experiment verify this method.
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