MIMO radar demystified and where it makes sense to use

Contrary to claims made Multiple Input and Multiple Output (MIMO) radars do not provide an order of magnitude or better angle resolution, accuracy and identifiability (the ability to resolve and identify targets) over conventional radars. This claim is based on using a MIMO array radar system consisting of a full transmit array and thinned receive array (or vice versa; called here a full/thin array). This claim for MIMO results from making the wrong comparison to a full conventional array rather than to a conventional full/thin array. It is shown here that a conventional full/thin array radar can have the same angle accuracy, resolution and identifiability as a MIMO full/thin array. Where does the MIMO radar provide a better angle accuracy than a conventional radar? A monostatic MIMO array radar does provide a better angle accuracy than its conventional monostatic equivalent, but it is only about a factor of 1/√2 (29 percent) better and its resolution is the same.

[1]  Eli Brookner,et al.  Practical Phased Array Antenna Systems , 1991 .

[2]  Christoph Meinel,et al.  Digital Communication , 2014, X.media.publishing.

[3]  Sergiy A. Vorobyov,et al.  Phased-MIMO Radar: A Tradeoff Between Phased-Array and MIMO Radars , 2009, IEEE Transactions on Signal Processing.

[4]  Eli Brookner,et al.  Aspects of Modern Radar , 1988 .

[5]  Jinho Choi,et al.  Low Complexity MIMO Detection , 2012 .

[6]  Aaas News,et al.  Book Reviews , 1893, Buffalo Medical and Surgical Journal.

[7]  Sergiy A. Vorobyov,et al.  MIMO radar capability on powerful jammers suppression , 2014, 2014 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP).

[8]  Richard O. Lane,et al.  Cognitive Radar: the Knowledge-Aided Fully Adaptive Approach. J. R. Guerci Artech House, 16 Sussex Street, London, SW1V 4RW, UK. 2010. 175pp. Illustrated. £66. ISBN 978-1-59693-364-4. , 2011, The Aeronautical Journal (1968).

[9]  F.C. Robey,et al.  MIMO radar theory and experimental results , 2004, Conference Record of the Thirty-Eighth Asilomar Conference on Signals, Systems and Computers, 2004..

[10]  James Ward,et al.  Space-time adaptive processing for airborne radar , 1994, 1995 International Conference on Acoustics, Speech, and Signal Processing.

[11]  W. Marsden.  I and J , 2012 .

[12]  Sergiy A. Vorobyov,et al.  Transmit Energy Focusing for DOA Estimation in MIMO Radar With Colocated Antennas , 2010, IEEE Transactions on Signal Processing.

[13]  Mandy Eberhart.  Antenna Based Signal Processing Techniques For Radar Systems , 2016 .

[14]  E. Brookner,et al.  Adaptive-adaptive array processing , 1986, Proceedings of the IEEE.

[15]  Eli Brookner.  Recent developments and future trends in phased arrays , 2013, 2013 IEEE International Symposium on Phased Array Systems and Technology.

[16]  Daniel W. Bliss,et al.  MIMO Radar: Concepts, Performance Enhancements, and Applications , 2009 .

[17]  J. Bartram,et al.  Digital Communication Systems , 1987, IEEE Journal of Oceanic Engineering.

[18]  Y.I. Abramovich,et al.  Recent results in MIMO over-the-horizon radar , 2008, 2008 IEEE Radar Conference.

[19]  D. J. Rabideau,et al.  Multiple-input multiple-output radar aperture optimisation , 2011 .

[20]  Joseph R. Guerci,et al.  Space-Time Adaptive Processing for Radar , 2003 .

[21]  David Tse,et al.  Fundamentals of Wireless Communication , 2005 .

[22]  P. Stoica,et al.  MIMO Radar Signal Processing , 2008 .

[23]  Eli Brookner,et al.  MIMO radar demystified and where it makes sense to use , 2014, 2013 IEEE International Symposium on Phased Array Systems and Technology.

[24]  Hongbin Li,et al.  Transmit Subaperturing for MIMO Radars With Co-Located Antennas , 2010, IEEE Journal of Selected Topics in Signal Processing.

[25]  G. J. Frazer,et al.  Initial results from an experimental skew-fire Mode-Selective over-the-horizon-radar , 2014, 2014 IEEE Radar Conference.