Title :
Novel algorithms for FMCW range finding with microwaves
Author :
Stolle, Reinhard ; Heuermann, Holger ; Schiek, Burkhard
Author_Institution :
Inst. fur Hochfrequenztech., Ruhr-Univ., Bochum, Germany
Abstract :
The output of a conventional FMCW ranging measurement is the real-part of the free-space transfer function. However, the missing imaginary part leads to an artificial but non-negligible measurement error, when employing a Fourier transform for distance evaluation. Novel algorithms for processing the FMCW measurement raw data are described, allowing complete suppression of the aforementioned image-error. Measurement uncertainties of ±0.2 mm have been achieved, performed in the frequency range from 8.5 up to 10.4 GHz. A considerable improvement is obtained even in comparison to entirely complex measurements
Keywords :
CW radar; FM radar; distance measurement; measurement errors; microwave measurement; radar applications; transfer functions; 8.5 to 10.4 GHz; FMCW measurement data processing; FMCW range finding; FMCW ranging measurement; Fourier transform; SHF; algorithms; complex measurements; distance evaluation; free-space transfer function; frequency range; image-error suppression; measurement error; measurement uncertainties; microwaves; Bandwidth; Filters; Fourier transforms; Frequency measurement; Performance evaluation; Pulse measurements; Radar imaging; Radar measurements; Time measurement; Transfer functions;
Conference_Titel :
Microwave Systems Conference, 1995. Conference Proceedings., IEEE NTC '95
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-2591-1
DOI :
10.1109/NTCMWS.1995.522875
