SMIMO Radar: MIMO Radar with Subarray Elements of Phased-Array Antenna

Syahfrizal Tahcfulloh(1*)

(1) Department Of Electrical Engineering, Universitas Borneo Tarakan
(*) Corresponding Author


Unlike Phased-MIMO Radar (PMIMO) which employs overlapping equal subarrays (OES) only on the transmit (Tx), Subarray-MIMO (SMIMO) radar utilizes the combination of subarrays, both in the transmit (Tx) and receive (Rx). SMIMO radar is MIMO radar with subarray elements acting as Phased-Array (PA). It simultaneously combines the primary advantages of PA and the MIMO radar; they are high directional gain and high diversity gain, respectively. High directional gain is beneficial to improve the range target, while high diversity gain is beneficial to improve the number of target detection. The use of the subarray methods in the Tx-Rx array could be configured such as in verlapping subarray (OS), non-overlapping subarray (NOS), equal subarray (ES), unequal subarray (US), and/or the combination of all configurations. Various configurations in Tr-Rx would determine the performance of radar, such as the number of virtual arrays, the maximum number of target detections, the detection accuracies, and the angular resolutions along with its effectivity compared to PA, MIMO, and Phased-MIMO radar. Numerical results and simulation showed that SMIMO provided higher flexibility than other radars by configuring Tx-Rx to easily adapt to various changes of target conditions and their surroundings.


Angular Resolution;MIMO Radar;Number of Detectable Targets;Phased-array;Subarray;Target Detection;Virtual Array

Full Text:



I. Bilik, O. Longman, S. Villeval, and J. Tabrikian, “The Rise of Radar for Autonomous Vehicles: Signal Processing Solutions and Future Research Directions,” IEEE Signal Processing Magazine, Vol. 36, No. 5, pp. 20–31, Sep. 2019.

R.C. Hansen, Phased Array Antennas, 2nd ed. New Jersey, USA: John Wiley & Sons, 2009.

D.S. Zrnic, G. Zhang, and R.J. Doviak, “Bias Correction and Doppler Measurement for Polarimetric Phased-Array Radar,” IEEE Transactions on Geoscience and Remote Sensing, Vol. 49, No. 2, pp. 843–853, Feb. 2011.

A. Haimovich, R. Blum, and L. Cimini, “MIMO Radar with Widely Separated Antennas,” IEEE Signal Processing Magazine, Vol. 25, No. 1, pp. 116-129, Jan. 2008.

Y. Li, H. Ma, Y. Wu, L. Cheng, and D. Yu, “DOA Estimation for Echo Signals and Experimental Results in the AM Radio-Based Passive Radar,” IEEE Access, Vol. 6, pp. 73316–73327, Nov. 2018.

X. Song, N. Zheng, and T. Bai, “Resource Allocation Schemes for Multiple Targets Tracking in Distributed MIMO Radar Systems,” International Journal of Antennas and Propagation, Vol. 2017, pp. 1–12, Jul. 2017.

M.S. Davis and A.D. Lanterman, “Coherent MIMO Radar: the Phased Array and Orthogonal Waveforms,” IEEE Aerospace and Electronic Systems Magazine, Vol. 29, No. 8, pp. 76–91, Aug. 2014.

A. Hassanien and S.A. Vorobyov, “Phased-MIMO Radar: A Tradeoff between Phased-Array and MIMO Radars,” IEEE Transactions on Signal Processing, Vol. 58, No. 6, pp. 3137–3151, Jun. 2010.

W. Khan, I.M. Qureshi, A. Basit, and M. Zubair, “Hybrid Phased MIMO Radar with Unequal Subarrays,” IEEE Antennas and Wireless Propagation Letters, Vol. 14, pp. 1702-1705, Apr. 2015.

S. Tahcfulloh and G. Hendrantoro, “Phased-MIMO Radar using Hadamard Coded Signal,” Proceeding of IEEE International Conference on Radar Antenna Microwave Electronics and Telecommunications, Tangerang, Indonesia, Oct. 2016, pp. 13–16.

A. Alieldin, Y. Huang, and W.M. Saad, “Optimum Partitioning of a Phased-MIMO Radar Array Antenna,” IEEE Antennas and Wireless Propagation Letters, Vol. 16, pp. 2287–2290, Aug. 2017.

M. Hardiwansyah, S. Tahcfulloh, and G. Hendrantoro, “Parameter Identifiability of Phased-MIMO Radar,” Proceeding of International Conference on Artificial Intelligence and Information Technology, Yogyakarta, Indonesia, Mar. 2019, pp. 192–195.

S. Tahcfulloh and G. Hendrantoro, “Full Phased MIMO Radar with Colocated Antennas,” International Journal on Communications Antenna and Propagation, Vol. 9, No. 2, pp. 144–154, Apr. 2019.

S. Tahcfulloh and G. Hendrantoro, “FPMIMO: General MIMO Structure with Overlapping Subarrays for Various Radar Applications,” IEEE Access, Vol. 8, No. 1, pp. 11248–11267, Jan. 2020.

A.F. Utami, Iswandi, and I.W. Mustika, “Random Delay Mitigation in Pulse Radar Implementation on Universal Software Radio Peripheral (USRP),” International Journal on Information Technology and Electrical Engineering, Vol. 2, No. 3, pp. 85–90, Sep. 2018.

J. Li, P. Stoica, X. Luzhou, and W. Roberts, “On Parameter Identifiability of MIMO Radar”, IEEE Signal Processing Letters, Vol. 14, No. 12, pp. 968 – 971, Dec. 2007.


Article Metrics

Abstract views : 771 | views : 257


  • There are currently no refbacks.

Copyright (c) 2021 IJITEE (International Journal of Information Technology and Electrical Engineering)

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

ISSN  : 2550-0554 (online)

Contact :

Department of Electrical engineering and Information Technology, Faculty of Engineering
Universitas Gadjah Mada

Jl. Grafika No 2 Kampus UGM Yogyakarta

+62 (274) 552305

Email :