This paper proposes a simplified eigencanceler (EC) for clutter suppression in an airborne multiple input multiple autput (MIMO) radar. By using the prior knowledge of the space-time distribution of the clutter, the clutter subspace is constructed off-line to replace the clutter subspace obtained via matrix eigendecomposition, and then the weight vector is simplified to the product of a constant projection matrix and the space-time steering vector of the desired signal. This method does not require complicated covariance matrix estimation and eigenvalue decomposition (EVD), and it not only eliminates performance degradation caused by inaccurate estimation of the covariance matrix, but also reduces computational cost. Simulation results demonstrate that with an ideal clutter model, the simplified MIMO-EC method can provide near optimal clutter suppression performance.
LU Hui, FENG Dazheng, HE Jie, XIANG Cong
. A Simplified Eigencanceler for Airborne MIMO Radar Clutter Suppression[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2011
, 32(5)
: 866
-872
.
DOI: CNKI:11-1929/V.20110126.1718.003
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