Radar radiation source signal separation method based on improved variational mode decomposition
A technology of variational modal decomposition and signal separation, which is applied to pattern recognition in signals, computational models, biological models, etc. Poor signal discrimination and other problems, to achieve the effect of fast iterative optimization, avoid mode aliasing, and avoid recognition errors
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[0053] The technical solutions of the present invention will be described below, and the described embodiments are the embodiments of the present invention, not all of the embodiments:
[0054] The present application provides a radar radiation source signal separation method based on improved variational modal decomposition, such as figure 1 As shown, including the following steps:
[0055] Step 1: Establish a radar radiation source signal library to obtain an additive hybrid radar radiation source signal P (T);
[0056] Select a conventional pulse signal (CONTINUOUS WAVE, CW), linear frequency frequencymodulation, lfm, two-phase encoded signal (Binary Phase Shift Keying, BNARY PHASE SHIFT KEYING, BINARY PHASE SHIFT, BPSK), FM Coded Signal (CostaS) and multiphase encoded signal (Frank code FRANK, P-phase code P1, P2, P3, P4) As the research object, set the simulation parameters of the radar radiation source signal to: sampling frequency f s = 256MHz, sampling point N = 1024. The ...
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