Microwave photon broadband radio frequency cancellation system and method based on spectrum processing

The invention discloses a microwave photon broadband radio frequency cancellation system and method based on spectrum processing, and the system comprises: a light source; an electro-optical modulator which is used for loading the reference signal to a multi-frequency optical carrier through electro-optical modulation to generate an optical reference signal; a spectrum processor which is used for adjusting the amplitude and the phase of each path of optical reference signal in an optical domain; an optical delay regulation and control module which is used for carrying out delay regulation on the regulated optical carrier reference signals, introducing equal-interval delays among all paths of optical carriers, and carrying out photoelectric conversion, so that all paths of optical carrier reference signals beat frequency to generate radio frequency cancellation signals which are equal in amplitude and opposite in phase with interference signals on the whole frequency band, so as to couple the cancellation sign