Parallel amplitude-phase calibration method and system for phased-array antenna

The invention provides a parallel amplitude-phase calibration method and a parallel amplitude-phase calibration system for a phased-array antenna. The method comprises a calibration signal setting step: setting a single-frequency calibration signal to be incident on the phased-array antenna, or to be transmitted through the phased-array antenna; an initial state setting step: selecting a pluralityof antenna units on the phased-array antenna, and setting the phase shifter of each selected antenna unit to be in an initial state; a modulation step: carrying out periodic phase modulation on the phase shifter of each selected antenna unit; and an analysis step: analyzing the harmonic characteristics of the received single-frequency calibration signal to calibrate the amplitude and phase of thecorresponding antenna unit. According to the invention, a plurality of units of the phased-array antenna can be simultaneously calibrated (the number of units calibrated at the same time is not limited), and the amplitude and