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31 December 2019 PRI sinusoidal modulation feature extraction and pulse sorting based on EMD
Beihai Wei, Chundong Qi, Wenhua Wang
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Proceedings Volume 11384, Eleventh International Conference on Signal Processing Systems; 1138403 (2019) https://doi.org/10.1117/12.2559539
Event: Eleventh International Conference on Signal Processing Systems, 2019, Chengdu, China
Abstract
Radar signal sorting is the key technology of electronic warfare, and pulse repetition interval (PRI) is an important parameter of signal sorting. In this paper, a PRI sinusoidal extraction method of modulation feature based on Empirical mode decomposition (EMD) decomposition is proposed. By defining the S function and performing EMD decomposition on it, the Intrinsic Mode Function (IMF) group obtained. Selecting the appropriate IMF component to extract the sinusoidal modulation period. Combined with the S function, the pulse sequence initially screened, and the modulation characteristics are determined according to the screening results. A pulse sorting algorithm is implemented according to the modulation characteristics. The simulation results show that the proposed method can effectively extract the modulation information from multiple radar pulses with different modulation periods, such as the modulation period of the PRI modulated signal, and complete the sorting of the radar pulse.
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Beihai Wei, Chundong Qi, and Wenhua Wang "PRI sinusoidal modulation feature extraction and pulse sorting based on EMD", Proc. SPIE 11384, Eleventh International Conference on Signal Processing Systems, 1138403 (31 December 2019); https://doi.org/10.1117/12.2559539
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KEYWORDS
Modulation
Radar
Feature extraction
Electronics
Signal attenuation
Computer simulations
Signal analyzers
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