Radar radiation source identification system based on signal scale decomposition

Abstract

The invention discloses a radar radiation source identification system based on signal scale decomposition. The system is composed of a radar signal database, a radar receiver, a signal decompositionmodule, a classifier and an identification result display instrument. The radar signal database stores historical collected radar signals of known types, and the radar receiver receives latest radar signals of unknown types. All radar signals are subjected to data multi-scale decomposition processing through a signal decomposition module, then the type of a radar radiation source is identified bya classifier according to the processed data, and finally an identification result display instrument displays a result. According to the method, the intra-pulse features of the radar radiation sourceare extracted through multi-scale decomposition and the lightweight gradient boosting tree, and classification and recognition can be better carried out compared with conventional features. When theradiation source signal is subjected to deep multi-scale analysis, the signal is subjected to multi-frequency decomposition, and in order to prevent frequency confusion, the original signal is subjected to processing of adding white noise and averaging, so that the identification accuracy is further improved.

Description

technical field [0001] The invention relates to the field of radar radiation source signal identification, in particular to a radar radiation source identification system based on signal scale decomposition. Background technique [0002] Radar radiation source identification technology is a crucial part of electronic warfare, the core of electronic support measures and the key technology in radar countermeasure system. The level of radar radiation source identification technology restricts the level of the entire radar countermeasure system, and the effectiveness and accuracy of its identification results will directly affect the judgment of the situation and the adjustment of decision-making. With the development of modern radar radiation sources, there are more and more new system radars represented by phased array radars, the electromagnetic environment is becoming more and more complex, the radiation sources are highly interleaved, and the signal density is increasing da...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problem that conventional features in current radar radiation source identification are too simple and cannot be accurately identified, the purpose of the present invention is to provide a radar radiation source identification system based on signal scale decomposition, which performs in-depth multi-scale analysis on radiation source signals, The signal is decomposed into multiple frequencies, and in order to prevent frequency confusion, the original signal is processed by adding white noise and averaging

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