Fig. 1. The broadband radar transceiver based on microwave photonic frequency multiplication and de-chirp receiving

Fig. 2. Principle of de-chirp processing

Fig. 3. (a) Picture showing the detection scenario; (b) Spectra of the de-chirped signal

Fig. 4. Setup of the phased array radar based on microwave photonic frequency multiplication and de-chirp receiving

Fig. 5. (a) Optical spectrum of the signal after DPMZM; (b) Spectra and waveform of the transmitted radar signal

Fig. 6. (a) Photograph of the phased array antennas and target; (b) Image constructed by digital beamforming

Fig. 7. Point spread functions along (a) range direction and (b) azimuth direction in the main beam

Fig. 8. Imaging result of multiple targets

Fig. 9. Equivalent MIMO array by the principle of the phase center approximation

Fig. 10. Schematic diagram of the microwave photonic MIMO radar based on wavelength division multiplexing

Fig. 11. Results of the target location with microwave photonic MIMO radar

Fig. 12. (a) Picture of the targets; (b) 2D imaging result of the targets