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Sparse MIMO Array for Improved 3D mm- Wave Imaging Radar

R. Z. Syeda, Timofey Savelyev, Martijn C. van Beurden, A.B. Smolders

202119 citationsDOI

Abstract

For imaging radar, higher angular resolution is essential, yet it requires a larger number of antenna elements in enlarged regular arrays. By using antenna-array sparsity, improved imaging performance can be achieved without the increase of antenna elements and the corresponding cost. A two-step synthesis procedure is developed and validated with a model of a 3D MIMO mm-wave imaging radar. Through simulations, it is shown that with a sparse transmit and receive array, an improvement in beam-width and side-lobe levels in the virtual array patterns for MIMO radars can be achieved. The model is confirmed by an experiment using the Walabot-60GHz radar from Vayyar.

Topics & Concepts

Radar imagingMIMORadarSparse arrayAntenna (radio)Computer scienceAntenna arraySide lobeAngular resolution (graph drawing)Radar engineering detailsPhased arrayElectronic engineeringOpticsAcousticsPhysicsTelecommunicationsEngineeringBeamformingAlgorithmMathematicsCombinatoricsRadar Systems and Signal ProcessingMicrowave Imaging and Scattering AnalysisAdvanced SAR Imaging Techniques
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