SIGNAL PROCESSING SYSTEM AND RELATED DEVICE

The present application relates to the technical field of millimeter-wave radars. Disclosed are a signal processing system and a related device. The signal processing system comprises a signal generation unit, a frequency-mixing and phase-shifting unit and N transmitting ports, wherein the signal generation unit is used for generating baseband signals, the baseband signals comprise a first baseband signal and a second baseband signal, and the first baseband signal and the second baseband signal are orthogonal signals; the frequency-mixing and phase-shifting unit is used for executing frequency-mixing processing and phase-shifting processing on the baseband signals to obtain N radio frequency signals, and the phases or frequencies of the N radio frequency signals are different from each other; and the N transmitting ports are used for respectively transmitting the N radio frequency signals, with N being a positive integer. The signal processing system can solve the problems of poor linearity and a long stabili