Method for obtaining steady radio frequency fingerprints from BPSK (Binary Phase Shift Keying) signal
A radio frequency fingerprint and signal technology, applied in the field of obtaining robust radio frequency fingerprints, can solve the problems of lack of robustness of radio frequency fingerprints, and achieve the effect of eliminating the influence
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[0042] Control figure 1 The RFF identification system of this embodiment is mainly composed of radio equipment of a Wi-Fi 802.11b network card 1 (Netware Interface Card, NIC for short), a wireless channel 2 and a receiving device 3. The Wi-Fi 802.11b USB NIC is connected to the corresponding computer 11, the frequency of the NIC is set to 2.412GHz, the working mode is set to continuously send frames to announce the existence of the Ad-hoc state, and the preamble is set to the short preamble. The receiving device 3 is composed of a receiving antenna 31, a wireless signal amplifier 32 that amplifies the wireless signal received by the receiving antenna 31, a computer 33, and a radio frequency oscilloscope 34. The receiving antenna 31 is an external high-gain antenna; the wireless signal amplifier 32 is a DSO91304A amplifier with a power of 2W, and its sampling rate is set to 10GSps (sa / s); the bandwidth of the RF oscilloscope is 13GHz, and the sampling rate is 40Gsa / s; the indoor...
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