| At present, there are many problems in traditional radar system. For example, low altitude targets or super low altitude targets are difficulty to be detected for multiple paths and shelter phenomenon, the attacking of anti-radiation missile, electromagnetism jamming and stealth targets. In order to cope with these challenges, the new concept of MIMO (multiple-input multiple-output) radar is proposed, which makes multi-antenna configuration and uses space multi-channel parallel transmission. MIMO radar also brings new challenges to the domain of ECM.Firstly, the principles of MIMO radar are presented in this paper, including the structure, classification, signal model, orthogonal waveform and signal processing system. Secondly, with MIMO radar signal processing analysis, the sequel DBF technology and mutil-target detection capability of MIMO radar are investigated. Thirdly, the MIMO radar reconnissionce and identification technology are discussed. A method of making correlation analysis based on time\space\frequency for multiple signals is proposed. Simulation results in the computer are carried out to demonstrate the effectiveness of the proposal. Finally, the electronic jamming methods of MIMO radar are investigated. The evaluation criterion of jamming effects is also presented. |
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