Abstract
The bandwidth of underwater acoustic channel is limited. Anti‐crosstalk technology is used in many acoustic fields to increase the utilization ratio of bandwidth. Based on the principle of adaptive estimator of instantaneous frequency, a new anti‐crosstalk method is presented, which uses the matched filter to resist the noise and estimate the time‐delay and uses the mean square error of instantaneous frequency as detection statistics to pick out the crosstalk interference from the same or nearby acoustic channel. The simulation results show that this method is not only useful in the detection of signals in low SNR but also is effective in the suppression of channel crosstalk, and the method can adapt to Doppler mismatch very well.
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