However, facing the increasingly complex electromagnetic environment, most existing methods have poor performance to identify different modulation types in low signal-to-noise ratio (SNR). This paper proposes an automatic recognition method for different LPI radar signal modulations. Firstly, time-domain ...
Nuclear quadrupole spin dynamics: How weak RF pulses and double resonance cross -relaxation contribute to explosives detection of explosives containing N, however it suffers from a low signal to noise ratio (SNR) particularly in samples with long spin-lattice relaxation times. To... DW Prescott 被...
As can be known from the above references, some methods of radar-signal modulation recognition at the same signal-to-noise ratio (SNR) have been proposed. However, the dual-component radar signal recognition method under different SNRs has not been reported to date. A majority of the proposed...
The proposed scheme was applied by using a threshold between signal and noise at fMSE equal to 0.5 to maintain the high-quality SM observations. In the regions where TCM is unreliable, we propose four scenarios based on the determinations of correlations between all three SM products of TCM ...
However, these methods mainly rely on the choice of signal features and the set thresholds, and they usually perform not very well or even fail to work in classifying the complex modulated signals or low signal-to-noise (SNR) signals. With highly developed artificial intelligence, significant ...