Array full duplex system

The invention discloses an array full duplex system. The array full duplex system comprises a transmitting array unit, a receiving array unit and a signal processing unit, the transmitting array unit comprises J transmitting array elements, the receiving array unit comprises K receiving array elements, the signal processing unit comprises K first digital filters, and the signal processing unit is used for controlling the array full duplex system to enter an external interference channel test mode to obtain a first channel response; controlling the array full duplex system to enter a radio frequency offset channel test mode to obtain a second channel response; obtaining a first filter coefficient according to the first channel response and the second channel response, and loading the first filter coefficient to a corresponding first digital filter; and controlling the array full duplex system to enter a normal working mode, performing signal reconstruction on the baseband emission signal by using each first di