Summary

Time-frequency analysis of narrow-band signals can be applied to a variety of problems. This report shows that high-resolution time-spectra can be used to detect a narrow-band transient in a very reliable way. As an example the application in a research sonar, where received signals are subject to further analysis, is demonstrated. In this application time-frequency detection may additionally serve as a quality assessment or quality enforcement tool which eliminates extremely noisy signals and provides a clean ensemble for a subsequent classification algorithm, for example.

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