Fig. 1. Schematic of wideband radar’s target detection

Fig. 2. Schematic of multi-channel demultiplexing photonic analog-to-digital converter

Fig. 3. Flow chart of channel-mismatch compensation

Fig. 4. STFT of single-channel signals for different frequency bands. (a) X-band (static corner reflectors); (b) Ka-band (static corner reflectors); (c) X-band (flying corner reflector)

Fig. 5. Comparison of interleaved digital data’s STFT spectra before and after channel-mismatch compensation. (a)(d) Results for X-band before and after compensation (static corner reflectors); (b)(e) results for Ka-band before and after compensation (static corner reflectors); (c)(f) results for X-band before and after compensation (flying corner reflector)

Fig. 6. One-dimensional imaging results by digital pulse compression processing before and after channel-mismatch compensated data in PADC. (a) Results comparison for X-band before and after compensation (static corner reflectors); (b) results comparison for Ka-band before and after compensation (static corner reflectors); (c) results comparison for X-band before and after compensation (flying corner reflector)