ULTRA-WIDE-BAND ALL-OPTICAL RADAR SYSTEM COVERING ALL WAVEBANDS

摘要

A full-spectrum covering ultra wideband full-photonics based radar system is disclosed, which comprises a signal transmitter, a transceiver module, and a signal receiver. The signal transmitter comprises a mode-locked laser, a first dispersion module, a first optical coupler, a second optical coupler, a first optical filter, a second dispersion module, a second optical filter, a first adjustable time delay module, a third optical coupler, an optical amplifier, and a first photodetector; the transceiver module comprises a band selector, a first electrical amplifier array, a T/R component array, an antenna array, and a second electrical amplifier array; the signal receiver comprises a third optical filter, a second adjustable time delay module, an electro-optical modulator, a third dispersion module, a second photodetector, an analog-digital conversion module, and a signal processing module. The present invention is advantageous in having continuous tunability for center frequency, bandwidth, and time width of the wideband signal, in having high coherence, and high ranging accuracy.