Rapid testing method for agile transmitting beam based on calibration link

The invention discloses a rapid testing method for an agile transmitted beam based on a calibration link. According to the invention, a set of amplitude-phase high-precision internal calibration network is established based on the internal calibration link characteristics of the space-based radar, and a wave beam agility signal is directly sent to a receiver in a manner that the coupling port of an internal calibration-antenna is independently cascaded with the receiving port of the receiver, so that the information of an agility emission wave beam is directly obtained. An antenna radiation synthesis mode is replaced by a wave beam internal calibration synthesis mode, while a certain precision measurement result of a wave beam is ensured, ground efficient testing of an agile emission wave beam is realized by performing intra-pulse time-frequency analysis on an internal calibration signal of a radar product and combining with a normal amplitude-phase characteristic corresponding to an antenna theory direction;