Three-dimensional imaging system and method based on rotational scanning

A three-dimensional imaging system based on rotational scanning, comprising:

• a column-shaped frame, comprising a column-shaped side, wherein, the column-shaped frame is provided with a circular guide rail arranged along a rotational direction;
• a transceiving antenna array element, arranged on the column-shaped side and configured to transmit a micro-wave detection signal to a detected object located in the column-shaped frame and to receive an echo signal reflected back from the detected object;
• a signal transceiving module, connected to the transceiving antenna array element and configured to generate the micro-wave detection signal and send the micro-wave detection signal to the transceiving antenna array element and to process the echo signal;
• a rotation control module, connected to the transceiving antenna array element and configured to control rotational movement of the transceiving antenna array element along the column-shaped side so that the transceiving antenna array element transmits the micro-wave detection signal to the detected object in a plurality of angles;
• and
• a plurality of positioning triggers, connected to the signal transceiving module, wherein the plurality of positioning triggers are fixedly arranged on the circular guide rail corresponding to a plurality of preset scanning spots respectively and are configured to trigger the signal transceiving module when the transceiving antenna array element arrives at a position of each of the plurality of positioning triggers to detect object at fixed points at positions of the plurality of preset scanning spots.