Fig. 1. Schematic of photonics-aided millimeter wave joint communication and radar sensing system

Fig. 2. Schematic and equipment diagram of joint communication and radar sensing system. (a) Schematic of proposed photonics-aided millimeter wave JRC architecture; (b) experimental setup

Fig. 3. Time-frequency diagrams of JRC signal. (a) Spectrum of original LFM; (b) spectrum of JRC signal

Fig. 4. Spectra of received signal. (a) Spectrum of IF signal after down conversion; (b) spectrum of de-chirped signal

Fig. 5. Experimental results of JRC signals. (a) BER curves for different signals in the 2 m transmission experiment; (b) BER curves for different signals in the 10 m transmission experiment; (c) EVM curves for different signals in the 50 m transmission experiment; (d) measured EVM at different frequency offsets

Fig. 6. Results of matched filtering of LFM and JRC signals

Fig. 7. Matched filtering results of JRC signals at 2 m and 10 m. (a) Filtering result of 2 m 4 GHz LFM-6 Gbaud QPSK integrated signal; (b) filtering result of 2 m 6 GHz LFM-4 Gbaud QPSK integrated signal; (c) filtering result of 10 m 4 GHz LFM-6 Gbaud QPSK integrated signal

Fig. 8. Detection results of double targets. (a) Detection result at 6 cm interval; (b) detection result at 10 cm interval