Fig. 1. Schematic diagram of the echo amplitude difference related to the separation of the discrete MIMO transceiver

Fig. 2. Schematic diagram of the near-field imaging scenario of the transmit-receive discrete 2-D MIMO radar

Fig. 3. Diagram of conversion process from beam pointing to amplitude

Fig. 4. Diagram of conversion process from amplitude to beam pointing

Fig. 5. Arrangement of transmitting elements and receiving elements

Fig. 6. Comparison of imaging results before and after calibration

Fig. 7. The antenna pattern and experiment scene

Fig. 8. Comparison of imaging results of Experiment 1

Fig. 9. Comparison of imaging results of experiment 2