Open Access Open Access  Restricted Access Subscription or Fee Access

Beamforming for Phased-MIMO Radar using MVDR Algorithm

K. Ashokkumar, A. Merline

Abstract


Phased Array RADAR has high processing gains but the area coverage is limited to a 120° cone whereas MIMO RADAR has a much enhanced flexibility for transmit beam pattern design. The proposed, is a technique for multiple input multiple output radar with co-located antenna which is called as ‗Phased-MIMO radar‘. The new technique enjoys the advantages of the MIMO radar without sacrificing the main advantage of the phased-array radar which is the coherent processing gain at the transmitting side. The Phased-MIMO radar is limited to range independent diversity; this limits radar performance to mitigate non-desirable range dependent interference. The aspect of the proposed technique is to divide the FDA transmit array into multiple sub-arrays, each sub-arrays coherently transmits a distinct waveform with a small frequency increment. The beamforming performance as compared to phased-MIMO radar is tested by analyzing the ‗transmitted-received‘ beampattern and the output SINR performance. The possible future task is the application of phased-MIMO radar with frequency diversity in (RSN) radar sensor networks.

Keywords


Phase Array Radar, MIMO Radar, Phased-MIMO Radar Beamforming.

Full Text:

PDF

References


A. Hassanien and S. A. Vorobyov "Phased-MIMO radar: A tradeoff between phased-array and MIMO radars", IEEE Trans. Signal Process., vol. 58, no. 6, pp.3137 -3151 2010

J. Li and P. Stoica "MIMO radar with colocated antennas", IEEE Signal Process. Mag., vol. 24, no. 5, pp.106 -114 2007

A. M. Haimovich , R. S. Blum and L. J. Cimini "MIMO radar with widely separated antennas", IEEE Signal Process. Mag., vol. 25, no. 1, pp.116 -129 2008

K. W. Forsythe and D. W. Bliss "MIMO radar waveform constraints for GMTI", IEEE J. Select. Topics Signal Process., vol. 4, no. 1, pp.21 -32 2010

S. Gogineni and A. Nehorai "Polarimetric MIMO radar with distributed antennas for target detection", IEEE Trans. Signal Process., vol. 58, no. 3, pp.1689 -1697 2010

M. Akacakaya and A. Nehorai "MIMO radar sensitivity analysis for target detection", IEEE Trans. Signal Process., vol. 59, no. 7, pp.3241 -3250 2011

J. Bergin , S. McNeil , L. Fomundam and R. Zulch "MIMO phased array for SMTI radar", Proc. IEEE Aerosp. Conf., pp.1 -7 2008

J. P. Browning , D. R. Fuhrmann and M. Rangaswamy "A hybrid MIMO phased-array concept for arbitrary spatial beampattern synthesis", Proc. IEEE Digital Signal Process, Educ. Workshop, pp.446 -450 2009

D. Fuhrmann , P. Browning and M. Rangaswamy "Signaling strategies for the hybrid MIMO phased-array radar", IEEE J. Select. Topics Signal Process., vol. 4, no. 1, pp.66 -78 2010

H. Li and H. Himed "Transmit subaperturing for MIMO radars with colocated antennas", IEEE J. Select. Topics Signal Process., vol. 4, no. 1, pp.55 -65 2010

P. Antonik , M. C. Wicks , H. D. Griffiths and C. J. Baker "Frequency diverse array radars", Proc. IEEE Radar Conf., pp.215 -217 2006

B. W. Jung , R. S. Adve and J. Chun "Frequency diversity in multistatic radars", Proc. IEEE Radar Conf., pp.1 -6 2008

V. Ravenni "Performance evaluations of frequency diversity radar system", Proc. 4th Eur. Radar Conf., pp.436 -439 2007

L. Xu and Q. L. Liang "Radar sensor network using a set of ternary codes: Theory and application", IEEE Sensors J., vol. 11, pp.439 -450 2011


Refbacks

  • There are currently no refbacks.