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High Resolution mmWave Radar by Radar Fusion and Sparse SAR

Authors:
Thomas Moon

Keywords: FMCW radar; SAR; Compressive Sensing; Autonomous Vehicle

Abstract:
In automotive applications, mmWave radar has been limited to measuring the range of objects. Its limited role comes from two reasons: low resolution in three-dimensional (3D) imaging and blind spot from specularity. A single automotive radar typically has less than 5GHz bandwidth, and therefore its distance resolution is insufficient. By fusing multiple radars operating different frequencies, the total bandwidth of the radar system can be increased. Strong specular effects of mmWave signals cause incomplete or shabby radar images due to few or none of the reflected signals back to the radar. We address the blind spot problem with random spatial sampling, resulting in the ability to reconstruct the radar image with missing reflected signals. The numerical results are illustrated to prove the concept.

Pages: 36 to 39

Copyright: Copyright (c) IARIA, 2021

Publication date: May 30, 2021

Published in: conference

ISSN: 2308-4006

ISBN: 978-1-61208-853-2

Location: Valencia, Spain

Dates: from May 30, 2021 to June 3, 2021