Abstract:

Compared with conventional phased array radar, the most distinct advantage of multiple-input multiple-output (MIMO) radar is that it has higher resolution due to the space convolution of the antenna aperture. Several X-band phased array radars can be constructed to form a distributed coherent MIMO radar with collocated antennas for narrower beam, but the trouble accompanying with this is the serious grating lobe. The paper optimizes the antenna array geometry of the distributed coherent MIMO radar with collocated antennas for the aim of reducing the grating lobe of the plane sparse arrays of MIMO radar. The simulation results show that the particle swarm optimization is effective and robust in the min-max design.