Real-time detection of non-cooperative burst signals in complex environment

Devised under simple assumption that either noise or a single burst signal exists, the known transient detectors produce a large number of false alarms in real situations and thus become inapplicable. The real situation for non-cooperative burst signal detection is analyzed and modeled as complicated environment containing continuous signals and short-period interferences besides additive noises. A short time Fourier transform (STFT) based sequential detector is proposed to deal with the complicated environment above. The new detector eliminates the false alarms sourced from other signals by identifying their time-lasting differences with that of burst objects. Performance evaluation through theoretical analysis and Monte Carlo simulations demonstrates that the detector is able to achieve the high probability of detection and the low probability of false alarm in the complicated environment. The detector proposed is computational effective and convenient for real-time implementation.