PERFORMANCE COMPARISON OF AIRBORNE PHASED-ARRAY AND MIMO RADAR WITH SUBARRAYS
Keywords:
Airborne MIMO radar, PA, Subarray, STAP, BBM-JDLAbstract
A generalized signal model for airborne phased-array (PA) and multi-input multi-output (MIMO) radar with colocated antennas is proposed. This model is based on partitioning the transmit array into a certain number of uniform subarrays that are allowed to overlap. Different subarrays transmit identical waveforms for PA radar while orthogonal or non-coherent ones for MIMO which maintains coherent processing gain in each of them. Passive element-level phase shifting is utilized within each subarray in order to steer the scanning beams. On the basis of the unified model, we focus on the performances of space-time adaptive processing (STAP) and nonadaptive processing technique by formulating and evaluating the signal-tointerference- noise ratio (SINR) for PA and MIMO radar. Beamforming-based modified joint domain localized (BBM-JDL) method is employed as the STAP technique. It is verified that under the same coverage condition, performances of PA and uniform non-overlapped MIMO radar are nearly same, while fully overlapped MIMO radar possesses the potential of achieving higher performance.
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References
Bliss D. W. and Forsythe K. W., “Multiple-input multiple-output (MIMO) radar and imaging:
degrees of freedom and resolution,” in Proc. 37th IEEE Asilomar Conf. Signals, Systems,
Computers, Nov. 2003, Vol .1, pp. 54-59.
Fishier E., Haimovich A., Blum R. S., Chizhik D., Cimini L., and Valenzuela R., "MIMO radar:
An idea whose time has come," in Proc. IEEE Radar Conference, Apr. 2004, pp. 71-78.
Fishler E., Haimovich A., Blum R. S., Cimini L. J., Chizhik D., and Valenzuela R.A.,
“Performance of MIMO radar systems: Advantages of angular diversity,” in Proc. 38th IEEE
Asilomar Conference Signals, Systems, Computers, Nov. 2004, vol. 1, pp. 305–309.
Fishler E., Haimovich A., Blum R. S., Cimini L. J., Chizhik D., and Valenzuela R. A., “Spatial
diversity in radars—models and detection performance,” IEEE Transaction on Signal Processing,
vol. 54, no. 3, pp. 823–837, Mar. 2007.
Forsythe K. W., Bliss D. W., and Fawcett G. S., “Multiple-input multiple-output (MIMO) radar
performance issues,” in Proc. 38th IEEE Asilomar Conference Signals, Systems, Computers, Nov.
, pp. 310–315.
Fuhrmann D. R. and Antonio G. S., “Transmit beamforming for MIMO radar systems using
partial signal correlation,” in Proc. 38th IEEE Asilomar Conference Signals, Systems, Computers,
Nov. 2004, pp. 295–299.
Antonio G. S. and Fuhrmann D. R., “Beampattern synthesis for wideband MIMO radar systems,”
Proc. 1st IEEE Int. Workshop Computational Advances in Multi-Sensor Adaptive Processing, pp.
–108, Dec. 2005.
Forsythe K. W. and Bliss D. W., “Waveform correlation and optimization issues for MIMO
radar,” in Proc. 39th IEEE Asilomar Conf. Signals, Systems, Computers, Nov. 2005, pp. 1306–
Li J. and Stoica P., “MIMO radar with collocated Antennas,” IEEE Signal Processing, Magzine,
vol. 24, no. 9, pp. 106-114, Sep. 2007.
Bergin J., McNeil S., Fomundam L., and Zulch P., “MIMO phased-array for SMTI radar,” in
Proc. IEEE Aerospace Conference, Big Sky, MT, Mar. 2008, pp. 1-7.
Fuhrmann D., Browning J. P. and Rangaswamy M., “Signal strategies for the hybrid MIMO
phased-array radar,” IEEE Selected Topics Journal on Signal Process., vol. 4, no. 1, pp. 66-78,
Feb. 2010.
Hassanien A., Vorobyov S. A., “Phased-MIMO radar: a tradeoff between phased-array and
MIMO radars,” IEEE Transaction on Signal Processing, vol. 58, no. 6, pp. 3137-3151, Jun. 2010.
Melvin W. L., “A STAP overview,” IEEE Aerospace and Electronic System Magzine, vol. 19, no.
, pp. 19-35, Jan. 2004.
Wang H. and Cai L., “On adaptive spatial-temporal processing for airborne radar Systems,” IEEE
Transaction on Aerospace and Electronic System, vol. 30, no. 3 pp. 660-670, Jul. 1994.
Chen C. Y. and Vaidyanathan P. P., "MIMO radar space time adaptive processing using prolate
spheroidal wave functions," IEEE Trans. on Signal Process., Vol. 56, pp. 623-635, Feb. 2007.
Li Y. Z., He Z. S., Liu H. M., Li J., “A new STAP method for MIMO radar based on joint digital
beam forming and joint domain localized processing,” in the 2011 CIE International Conference
on Radar, vol. II, pp. 1107-1110, Oct. 2011.
Ward J., Space–time adaptive processing for airborne radar, Lincoln Laboratory, Lexington, MA,
Tech. Rep. 1015, Dec. 1994.
Guerci J. R., Space–Time Adaptive Processing. Norwood, MA: Artech House, 2003.
Klemm R., Principles of Space–Time Adaptive Processing. London, U.K.: IEE, 2002.
H. L. Van Trees, Optimum Array Processing: Part IV of Detection Estimation and Modulation
Theory. New York: Wiley Interscience, 2002.
