A target identification method and device in a complex electromagnetic environment

Abstract

The application relates to a target identification method and device in a complex electromagnetic environment, which comprises the following steps: carrying out denoising processing on a target signal to be identified by using a wavelet packet threshold value to obtain a reconstructed signal; identifying the reconstructed signal according to a frequency domain self-adaptive amplitude modulation to obtain a signal type of the target signal; obtaining a corresponding radiation source individual of the target signal by using a pre-trained support vector machine; and obtaining an identification result of the target signal according to the signal type of the target signal and the corresponding radiation source individual. Through the above technical scheme, the wavelet packet threshold value is used for denoising, the noise interference is significantly reduced under a low signal-to-noise ratio, the effective part of the target signal is improved, the reconstructed signal is identified according to the frequency domain self-adaptive amplitude modulation, so that the signal type is obtained, the calculation time can be reduced, the target signal has a high identification rate, and the pre-trained support vector machine is used for obtaining the radiation source individual, so that the identification of the corresponding radiation source individual of the target signal can be efficiently completed.

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