Wood tomography system based on microwave sensor array

The invention discloses a wood tomography system based on a microwave sensor array, and the system comprises a microwave sensor unit which comprises an annular antenna array and a plurality of radio frequency switches, and the annular antenna array is arranged in the circumferential direction of a to-be-detected tree in a surrounding manner; a radio frequency transmitting unit and a radio frequency receiving unit, wherein the radio frequency transmitting unit and the radio frequency receiving unit are connected with the plurality of radio frequency switches through a multiplexer; the radio frequency transmitting unit transmits a microwave signal to a tree to be detected through one microwave antenna for primary scanning, and the radio frequency receiving unit simultaneously receives an echo signal through the remaining microwave antennas and reads an echo signal parameter; and the computer is connected with the radio frequency receiving unit and is used for performing tomographic imaging on the interior of th