Study on clutter characteristics of airborne MIMO radar

This paper builds model of clutter for airborne MIMO radar by transmitting multi-Carrier rectangle pulse signal, then lists the typical clutter spectrum estimator and clutter freedom estimation rule, finally simulates clutter spectrum and clutter characteristics of clutter rank with different transmit frequencies and different error. The analysis results show minimum variance clutter spectrum emerges the clutter with diagonal property in the space-time category. The clutter spectrum spreads and clutter degree of freedom increases because of the fluctuation of clutter and the yaw angle, even blends for airborne MIMO radar, the increase of transmit frequency step degrades the relation of clutter. Based on these studies, we can suppress the clutter more effectively.