Title :
Precision ranging by phase processing of scalar homodyne FMCW raw data
Author :
Stolle, Reinhard ; Schiek, Burkhard
Author_Institution :
Ruhr-Universitaet Bochum, Arbeitsgruppe Hochfrequenzmesstechnik, D-44780 Bochum, Germany. Tel: +49 234 700-6497, Fax: +49 234 7094-167, E-mail: rest@hf.ruhr-uni-bochum.de
Abstract :
A new way of processing FMCW raw data is described, leading to a ranging uncertainty of ±0.2 mm in 500 MHz measurement bandwidth. The system is based on a low-cost scalar homodyne FMCW set-up and a FFT for signal processing. The reflection phase of each target is exploited for precision ranging. Our novel approach utilizes the reflection phase, but in contrast to a Hilbert Transform it is principally error-free. As compared to CW phase measurements our method is qualified for multiple target environments and has a higher signal-to-noise ratio.
Keywords :
Bandwidth; Delay effects; Fourier transforms; Frequency measurement; Optical reflection; Phase measurement; Radar; Signal generators; Signal to noise ratio; Transfer functions;
Conference_Titel :
Microwave Conference, 1996. 26th European
Conference_Location :
Prague, Czech Republic
DOI :
10.1109/EUMA.1996.337538
