2D high resolution of stepped-FM radar based on MUSIC scheme

Ogawa, Kenshi; Kajiwara, Akihiro

doi:10.1109/wisnet.2018.8311562

Cited by 2 publications

(1 citation statement)

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“…Other high-resolution algorithms have also been studied to complement these approaches. For example, in [17] a MIMO system in conjunction with a multiple signal classification (MUSIC) [18] approach was reported. Capon filtering [19] and the estimation of signal parameters via rotational invariance techniques (ESPRIT) [20], have also been used in MIMO systems (more information can be found in [6] and [21]).…”

Section: Introductionmentioning

confidence: 99%

FMCW Radar With Enhanced Resolution and Processing Time by Beam Switching

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Podilchak

et al. 2021

IEEE Open J. Antennas Propag.

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We present the design of a novel K-band radar architecture for short-range target detection. Applications include direction finding systems and automotive radar. The developed system is compact and low cost and employs substrate-integratedwaveguide (SIW) antenna arrays and a 4×4 Butler matrix (BM) beamformer. In particular, the proposed radar transmits a frequency modulated continuous-wave (FMCW) signal at 24 GHz, scanning the horizontal plane by switching the four input ports of the BM in time. Also, in conjunction with a new processing method for the received radar signals, the architecture is able to provide enhanced resolution at reduced computational burden and when compared to more standard single-input multipleoutput (SIMO) and multiple-input multiple-output (MIMO) systems. The radar performance has also been measured in an anechoic chamber and results have been analyzed by illuminating and identifying test targets which are 2 • apart, while also making comparisons to SIMO and MIMO FMCW radars. Moreover, the proposed radar architecture, by appropriate design, can also be scaled to operate at other microwave and millimeterwave frequencies, while also providing a computationally efficient multi-channel radar signal processing platform.

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