Radio frequency fine feature information extraction method and system based on semi-supervised meta learning
A subtle feature and information extraction technology, applied in neural learning methods, instruments, biological neural network models, etc., can solve problems such as poor generalization ability, low precision, and inability of deep network models to fully mine the distribution characteristic information of signal samples. Achieve the effect of improving accuracy and generalization ability and simplifying dependencies
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[0076] The present invention is further described below in conjunction with accompanying drawing:
[0077] see Figure 1 to Figure 5 , the present invention aims at the extraction of subtle feature information of communication radiation sources and individual identification, based on the semi-supervised meta-learning model, through the simultaneous training of the student network and the teacher network to promote each other, the radio frequency subtle feature perception and extraction system based on machine learning System model such as figure 2 As shown, there are three parts in the whole system. The first part is the transmitter. After the digital baseband signal has completed all the processing, the signal will be I / Q modulated and then go through a series of analog signal processing processes such as filters and power amplifiers. In this process, the nonlinear characteristics of some modules are added. into the waveform of the signal. The second part is that after th...
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