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

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.

Dettagli sul prodotto

• Autori: Daniela Karina Bleh
• Con la collaborazione di: Fraunhofer IAF (Editore)
• Editore: Fraunhofer Verlag
• Lingue: Inglese, Tedesco
• Formato: Tascabile
• Pubblicazione: 01.01.2022
• EAN: 9783839612545
• ISBN: 978-3-8396-1254-5
• Pagine: 120
• Dimensioni: 148 mm x 210 mm x 7 mm
• Peso: 184 g
• Illustrazioni: 40 Farbabb.
• Serie: Science for Systems
• Categoria: Scienze naturali, medicina, informatica, tecnica > Tecnica > Termotecnica, tecnica energetica ed elettrica