The invention relates to a system for generating synthetic digital data, comprising a receiver configured to receive a measured signal, in particular an RF signal, a converter configured to convert the measured signal to digital data representing signal characteristics of the measured signal, a trainable neural network encoder and a trainable neural network decoder, wherein, during a training routine, the neural network encoder is configured to receive the digital data and to generate a compressed representation of the digital data, and the neural network decoder is configured to generate a reconstruction of the digital data based on the compressed representation, and wherein the trained neural network decoder is configured to receive random or pseudorandom data and to generate synthetic digital data representing measured signal characteristics based on the random or pseudorandom data.