Binary Phase-Coded Sequence Recognition Based on EMD

Identifying the phase-coded sequence of the binary phase-coded radar signal is a difficultly issue in the radar countermeasures. In this paper, a new approach of abstracting waveform features of the radar signal and identifying the phase-coded sequences is proposed, based on experimental model decomposition. The proposed approach can successfully identify complex phase-coded signal. Moreover, the presented approach can be applied as an integral part of radar signal recognition algorithm to prevent the electronic support measure (ESM) system from taking actions against false radar signal recognition and consequently avoid the waste of the available resources. Computer simulation results have shown that the proposed approach can successfully identify phase-coded sequences, and the recognition accuracy is greater than or equal to 89% when the signal-to-noise ratio is as low as 8 dB.