MIMO radar has gotten considerable

MIMO radar has gotten considerable attention in a novel class of radar
system in the last decade ([1, 2] and references therein). There are two
basic regimes of architecture considered in the current literature [3].
One is called statistical MIMO radar with widely separated antennas,
which captures the spatial diversity of the target's radar cross section
(RCS) [2]. The other is called coherent MIMO radar with colocated
antennas, which can obtain the waveform diversity and larger degrees
of freedom (DOF) to improve the target parameter estimation