In a MIMO system, the transmitting signals from the single transmitters are different. As a result, the echo signals can be re-assigned to the source. This gives an enlarged virtual receive aperture.
Multiple-input multiple-output (MIMO) radar is an extension of a traditional radar system to utilize multiple-inputs and multiple-outputs (antennas), similar to MIMO techniques used to increase the capacity of a radio link.[1][2] MIMO radar is an advanced type of phased array radar employing digital receivers and waveform generators distributed across the aperture. MIMO radar signals propagate in a fashion similar to multistatic radar. However, instead of distributing the radar elements throughout the surveillance area, antennas are closely located to obtain better spatial resolution, Doppler resolution, and dynamic range.[3] MIMO radar may also be used to obtain low-probability-of-intercept radar properties.[4]
In a traditional phased array system, additional antennas and related hardware are needed to improve spatial resolution. MIMO radar systems transmit mutually orthogonal signals from multiple transmit antennas, and these waveforms can be extracted from each of the receive antennas by a set of matched filters. For example, if a MIMO radar system has 3 transmit antennas and 4 receive antennas, 12 signals can be extracted from the receiver because of the orthogonality of the transmitted signals. That is, a 12-element virtual antenna array is created using only 7 antennas by conducting digital signal processing on the received signals, thereby obtaining a finer spatial resolution compared with its phased array counterpart.
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^Kalkan, Yılmaz (2024). "20 Years of MIMO Radar". IEEE Aerospace and Electronic Systems Magazine: 1–5. doi:10.1109/MAES.2023.3349228. ISSN 0885-8985.
^Rabideau, D.J. (2003). "Ubiquitous MIMO multifunction digital array radar". The Thirty-Seventh Asilomar Conference on Signals, Systems & Computers, 2003. Vol. 1. pp. 1057–1064. doi:10.1109/ACSSC.2003.1292087. ISBN 978-0-7803-8104-9. S2CID 60452716.
^Rabideau, D J (2003). Ubiquitous MIMO Multifunction Digital Array Radar ... and the Role of Time-Energy Management in Radar(PDF). DEFENSE TECHNICAL INFORMATION CENTER. Archived (PDF) from the original on December 3, 2019.
multiple-output (MIMO) radar is an extension of a traditional radar system to utilize multiple-inputs and multiple-outputs (antennas), similar to MIMO techniques...
In radio, multiple-input and multiple-output (MIMO) (/ˈmaɪmoʊ, ˈmiːmoʊ/) is a method for multiplying the capacity of a radio link using multiple transmission...
A further subset of multistatic radar with roots in communications is that of MIMOradar. Since multistatic radar may contain both monostatic and bistatic...
Valenzuela (2004). MIMOradar: an idea whose time has come. IEEE Radar Conference. Mark R. Bell (1993). "Information theory and radar waveform design"....
Such systems are sometimes described as MIMOradars due to the information theoretic similarities to MIMO communication systems. An ambiguity function...
introduced the technology of collocated Multiple-Input Multiple-Output (MIMO) radar, where the concept of virtual sensors was introduced via transmission...
array radars) are composed of thousands of individual antennas. Arrays can be used to achieve higher gain, to give path diversity (also called MIMO) which...
MiMo antenna array enables accurate detection and tracking of multiple static and dynamic targets simultaneously. Cost efficiency: 4D imaging radar costs...
Muge; Baker, Chris; Hoare, Edward; Gashinova, Marina (2021). "Joint MIMORadar and Communication System Using a PSK-LFM Waveform With TDM and CDM Approaches"...
IEEE Trans Signal Process, vol 51, 1702–1715, 2003. J Li and P Stoica, MIMOradar with colocated antennas: review of some recent work. IEEE Signal Processing...
and indoor service. Massive MIMO would also be employed in high-speed backhaul links. History of radar History of radio MIMO Smart antenna ADA Braun, Karl...
The Synchronous Impulse Reconstruction (SIRE) radar is a multiple-input, multiple-output (MIMO) radar system designed to detect landmines and improvised...
Seminar. University of Texas at Austin. J Li, Peter Stoica (Eds) (2009). MIMORadar Signal Processing. USA: J Wiley&Sons. Peter Stoica, R Moses (2005). Spectral...
and single-output (MISO), and multiple-input and multiple-output (MIMO) structures. MIMO is an advanced smart antenna system which has multiple transmit...
at both transmit and receive results in a multiple-input multiple-output (MIMO) system. The use of diversity techniques at both ends of the link is termed...
multiple-input and multiple-output (MIMO) radar systems. Ahmad worked on urban sensing and Through the Wall Radar Imaging (TWRI) to visualise areas that...
beamforming) DAA use to improve the performance of radio communications in MIMO (Massive MIMO) systems. DAA was implemented in a big lot of sonars and medical ultrasound...
Czech). Retrieved 2024-01-11. ArmadniNoviny.cz. "Holding CSG jako jediný mimo USA komerčně provozuje legendární vrtulníky UH-60 Black Hawk". Armádní noviny...
latency, such as MU-MIMO[4][9] and CRAN. When the delay-Doppler channel representation is appropriately incorporated in MU-MIMO architecture, it enables...
communication systems. The proposed strategies are particularly suitable for MIMO communication systems, with channel state information at the transmit side...
using large numbers of antennas. This includes Single User MIMO and Multi-user MIMO (MU-MIMO). Each antenna is individually-controlled and may embed radio...
Ishimaru, Akira (2018). "Hard-Wall Radar Imaging: Localization of Objects Shadowed by Metallic Walls With MIMORadar". IEEE Transactions on Antennas and...
"Channel Estimation for Orthogonal Time Frequency Space (OTFS) Massive MIMO". IEEE Transactions on Signal Processing. 67 (16): 4204–4217. arXiv:1903...
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