W-Band FMCW MIMO radar demonstrator system for 3D imaging.

Daniela Karina Bleh, Fraunhofer IAF

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English

Fraunhofer Verlag
12 February 2018

Engineering: general; Parallel processing; Signal processing

Series: Science for systems

Summary
Details

One of the most dangerous situations when flying a helicopter is landing over dry sand or powder snow. The rotors swirl particles creating a dense cloud. With optical methods navigating through this cloud is impossible but for millimetre waves it becomes almost transparent. As a consequence millimetre waves are an outstanding choice for the development of imaging systems that can be used as a landing aid. The aim of this work is the 3D imaging of static scenes with a large field of view, good resolution and high dynamics. In this thesis a demonstrator system is presented, which is based on the MIMO principle and works with FMCW radar modules in the millimetre wavelength range. The set-up of the demonstrator system is explained and the hardware components are described. An algorithm for image reconstruction is presented as well as a calibration routine. An optimized antenne aperture is determined that enables unambiguous imaging of the half-space in front of the aperture with good resolution and low side lobes. Various measurements illustrate three-dimensional imaging capabilities and show long-range operation. In addition, the data acquisition rate is determined.

By: Daniela Karina Bleh
Edited by: Fraunhofer IAF
Imprint: Fraunhofer Verlag
Country of Publication: Germany
Volume: 34
Dimensions: Height: 210mm, Width: 148mm, Spine: 6mm
Weight: 154g
ISBN: 9783839612545
ISBN 10: 3839612543
Series: Science for systems
Pages: 120
Publication Date: 12 February 2018
Audience: Professional and scholarly , Undergraduate
Format: Paperback
Publisher's Status: Inactive