Abstract
Recently, cross-ice acoustic communication experiment was conducted in shallow water with the water column covered by fifty centimeters thick ice. During this experiment, single carrier communication signals with a center frequency 750 Hz and bandwidth 500 Hz were transmitted from a flextensional transducer to a receiving array with five ice-mounted geophones uniformly spaced by 0.5 m. This paper firstly analyzes the estimated cross-ice acoustic channels in terms of amplitude and phase characteristic, temporal coherence and spatial coherence. The communication performance is then presented based on multi-channel decision feedback equalizer (M-DFE). According to the experimental results, it can be concluded that it is feasible to realize cross-ice data transmissions using ice-mounted geophones at short ranges.
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