Communication signal blind reconnaissance technology based on independent component analysis

Due to the complexity of the electromagnetism circumstance and the multiplicity of the signal modulation mode in communication countermeasure,we can not know prior any information of the original signal,which bring great difficulty for communication countermeasure.In order to solve the difficult problem of communication countermeasure in circumstance of complex multiple signals,we propose a new blind reconnaissance technology,which adopts independent component analysis(ICA) technology to separate the original signals blindly and implement following signal processing to each of the resulting signals. Based on the introducing ICA technology,We simulate the separation effect using EASI-based(Equivariant Adaptive Separation via Independent) ICA algorithm.The simulation result shows that original signals can be separated primely by adopting this method without any priori information(i.e.carrier frequency,signal bandwidth and modulation mode),which establish a base for following signal processing,such as signal analysis and identity,demodulating and so on.