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After being interfered by the jamming sources, the signal obtained at the target detector receiver can be written as this. where j(t) is the jamming signal and n(t) is the additive Gaussian white noise (AWGN). From this figure we can see the process of fuze jamming signal recognition. The received signal is further mixed with the local oscillator signal that matches the carrier signal and enters the jamming signal recognition module. The jamming signal recognition module consists of two parts: the TFA module and the CNN detector. The TFA module converts jamming signals into time-frequency images. The CNN detector extracts time-frequency images features and recognizes the jamming signals correctly. |
IEEE/ICACT20230135 Slide.06
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