A Modified MIMO Radar Model Based on Robustness and Gain Analysis

摘要

Multi-Input Multi-Output (MIMO) radar is a new radar technology in recent years, which partially or completely uses spatial diversity gain of the signal to replace coherent gain in traditional phased-array radar. Using the ideal point source model, we make a detailed analysis of the contributions to radar detection system made by these two kinds of gain. These contributions are divided into two kinds: the contribution to system robustness and the contribution to improving the signal-to-noise ratio. Based on this, it is proposed that the space diversity gain of MIMO radar can make more contribution to the system. The rationality of this proposal is further proved by the modification of the statistical MIMO model. And the theory above is verified by simulation. In addition, this paper illustrates how to analyze other MIMO radar systems from the viewpoints of these two kinds of contributions.