Acoustic communication in deep water exploiting multiple beams with a horizontal array.
نویسنده
چکیده
A recent experiment showed that coherent long-range acoustic communication (200-300 Hz) is feasible in deep water over a ∼550-km range between a source and a horizontal towed array (∼100 m aperture). The low input signal-to-noise ratio (SNR) (e.g., -10 dB) at an element level required conventional beamforming to enhance the SNR of the communication signals for subsequent channel equalization and decoding. This paper demonstrates that with a larger aperture (∼200 m), multiple adjacent beams can be exploited to further improve the communication performance, achieving an almost error-free data rate of 100 bits/s for QPSK modulation at ∼550 km range.
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ورودعنوان ژورنال:
- The Journal of the Acoustical Society of America
دوره 132 2 شماره
صفحات -
تاریخ انتشار 2012