Clutter covariance matrices for GMTI MIMO radar

We examine the clutter covariance matrices for ground moving-target indicator (GMTI) multiple-input, multiple-output (MIMO) radar systems, and, in particular, discuss a potential suboptimal increase in their rank. This increase in rank will generically degrade the ability of a MIMO GMTI system to de...

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Bibliographic Details
Main Authors: Kantor, J M, Bliss, D W
Format: Conference Proceeding
Language:English
Subjects:
Arrays
Clutter
Covariance matrix
Doppler effect
Eigenvalues and eigenfunctions
MIMO
Transmitters
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Summary:We examine the clutter covariance matrices for ground moving-target indicator (GMTI) multiple-input, multiple-output (MIMO) radar systems, and, in particular, discuss a potential suboptimal increase in their rank. This increase in rank will generically degrade the ability of a MIMO GMTI system to detect slowly moving targets. We first give a general theoretical analysis and then focus on simulated and experimental data for MIMO systems employing fast-time random, time-division multiple-access (TDMA), and Doppler-division multiple-access (DDMA) waveforms. We will show that for the TDMA/DDMA waveforms the clutter covariance matrix in a given Doppler bin is effectively rank 1 for both the simulated and experimental data.
ISSN:1058-6393
2576-2303
DOI:10.1109/ACSSC.2010.5757856