Forming and detection of digital watermarks in the System for Automatic Identification of VHF Transmissions
DOI:
https://doi.org/10.18372/2306-1472.55.5415Keywords:
digital watermarks, hash-function, identification, intersymbol interference, VHF radiotelephonyAbstract
Forming and detection algorithms for digital watermarks are designed for automatic identification of VHF radiotelephone transmissions in the maritime and aeronautical mobile services. An audible insensitivity and interference resistance of embedded digital data are provided by means of OFDM technology jointly with normalized distortions distribution and data packet detection by the hash-function. Experiments were carried out on the base of ship’s radio station RT-2048 Sailor and USB ADC-DAC module of type Е14-140M L-CARD in the off-line processing regime in Matlab mediumReferences
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