Multiple-input Multiple-output Grating Lobe Selection Scheme for Radar Applications

Master thesis (2019)

Authors

N.A. Cancrinus Electrical Engineering, Mathematics and Computer Science

Contributors

Alexander Yarovoy Microwave Sensing, Signals & Systems - EEMCS (mentor)
J. Puskely Microwave Sensing, Signals & Systems - EEMCS (mentor)
C. Silveira Vaucher Electronics - EEMCS (graduation committee member)
O.A. Krasnov Microwave Sensing, Signals & Systems - EEMCS (graduation committee member)
Faculty
Electrical Engineering, Mathematics and Computer Science, Electrical Engineering, Mathematics and Computer Science
Copyright: © 2019 Nick Cancrinus
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Published Date

26-08-2019

Language

English

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Faculty

Electrical Engineering, Mathematics and Computer Science

Abstract

For radar applications, MIMO is often used. The problem is that the amount of available transmit- and receive channels is limited. If each channel is connected to a single antenna element, the effective aperture is small, and therefore the beamwidth is large and the angular resolution is limited. In this thesis, a novel scheme is proposed that circumvents this problem. More details are given in the full thesis. The result is an array that covers a reduced part of the visible space, with discrete beams that have improved beamwidth. The system gives the possibility to improve the angular resolution at the cost of field of view. A CST-model is made to verify this concept. In the specific example given in this thesis, the half-power beamwidth is improved from 8.4 degrees at broadside, to 5.7 degrees at broadside. At the same time the coverage is reduced from a theoretical ±90 degrees, to ±50 degrees.

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