Watermarking of linear frequency modulated pulses using chirplet graphs and stretch processing.


In many underwater acoustics problems such as search and rescue, it is desirable to establish the source of the sonar pings. In this paper a methodology is proposed to watermark sonar pulses prior to transmission by embedding them with a chain of low power chirplets represented by a graph. Watermark detection is formulated using stretch processing where… (More)
DOI: 10.1121/1.4938268


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