Demodulate an acoustic underwater communication using GNURadio. You can use Octave for your initial research.
The signal is modulated in coherent-FSK, using 84.5 kHz to represent the «0» symbol and 85.5 kHz for symbol «1». The transmission speed is 1 kbps.
The following image is a real recording of a transmission.
Submit the developed application and a small memory explaining the followed decoding procedure and bibliographic references.