High range resolution based on Multi-Carrier-Frequency MIMO Radar

Multi-Carrier-Frequency MIMO (MCF MIMO) Radar is a radar system with multiple transmit antennas and multiple receive antennas capitalizing on frequency diversity and spatial diversity to obtain orthogonality of transmitted signals and it can combine a number of narrow bandwidth signals to form a large bandwidth signal to obtain high range resolution(HRR). Two processing methods based on dechirp processing and channel separation technique to obtain the HRR, which are respectively IDFT Coherent Synthesis method (short for ICS method) and Spatial Domain Synthetic Bandwidth method (short for SDSB method), are proposed in the paper. Also both methods are characterized by the reduction of the instantaneous bandwidth and slightly influence on the moving target. Finally the simulation results on the computer validate these conclusions.