Title :
MIMO system for fast imaging at 90 GHz
Author :
R. Herschel;S. Nowok;P. Warok;R. Zimmermann;S. A. Lang;N. Pohl
Author_Institution :
Department Millimeter Wave Radar and High Frequency Sensors, Fraunhofer Institute for High Frequency Physics and Radar Techniques FHR, Fraunhoferstra?e 20, 53343 Wachtberg, Germany
Abstract :
A millimeter wave imaging system operating around 90 GHz with 7.5 GHz bandwidth is presented. 2D images with 20 mm resolution in range and 3.2° in azimuth are obtained with an 1×4 MIMO approach. The performance of receiver and transmitter modules driven by a Direct Digital Synthesizer is discussed. Experimental data on radar imaging between 1 and 4 m is shown and the used calibration is discussed in further detail. The system successfully achieves a dynamic range of more than 40 dB.
Keywords :
"Radar imaging","Calibration","Receivers","Imaging","Image resolution","Chirp"
Conference_Titel :
Microwave Conference (EuMC), 2015 European
DOI :
10.1109/EuMC.2015.7345793
