Study on Array Antenna Radar OFDM-MIMO Three-dimensional Imaging Method

To further improve data acquisition with array antenna radar three-dimensional imaging, a Array Antenna Radar Three-Dimensional Imaging based on OFDM-MIMO is proposed, called Array Antenna Radar Three-Dimensional Imaging based on OFDM-MIMO (AAR-3DIM-OFDM-MIMO). Firstly, this paper presents the principles for AAR-3DIM-OFDM-MIMO, then the geometry and echo model are established. Different transmitting array elements emit mutually orthogonal narrowband LFMCW signals, which are simultaneously received by different receiving array elements. Secondly, a new signal is synthesized from multiple narrowband signals with different carrier frequencies. A three-dimensional imaging processing method is used to reconstruct the image of the target scene. Finally, the feasibility of the proposed method is subsequently validated with simulations.