PRI modulation recognition and sequence search under small sample prerequisite

Pulse repetition interval (PRI) modulation recognition and pulse sequence search are significant for effective electronic support measures. In modern electromagnetic environments, different types of inter-pulse slide radars highly confusing. There few available training samples in practical situations, which leads to a low accuracy poor effect the sequence. this paper, an approach based on bi-directional long short-term memory (BiLSTM) networks temporal correlation algorithm PRI under small sample prerequisite is proposed. The simulation results demonstrate that proposed can recognize unilinear, bilinear, sawtooth, sinusoidal with 91.43% complete 30% missing pulses 50% spurious prerequisite.