Title :
Novel nonlinear FMCW radar for precise distance and velocity measurements
Author :
Vossiek, M. ; Kerssenbrock, T.V. ; Heide, P.
Author_Institution :
Dept. of Corp. Technol., Siemens AG, Munich, Germany
Abstract :
A new nonlinear FMCW radar concept for precise distance and velocity measurements is presented. The radar system incorporates a surface acoustic wave (SAW) reference device used for an online detection of oscillator phase errors. With a specific Doppler/distance ambiguity function, that is continuously adapted to the measured phase error, the target signal is evaluated. By applying this novel technique the optimal distance resolution at a given sweep bandwidth is obtained independently of the Doppler resolution. The proposed system approach has been evaluated with a 77 GHz radar incorporating a flip-chip MMIC VCO.
Keywords :
CW radar; Doppler radar; FM radar; distance measurement; millimetre wave measurement; surface acoustic wave devices; velocity measurement; 77 GHz; Doppler/distance ambiguity function; MM-wave radar; SAW reference device; distance measurements; flip-chip MMIC VCO; nonlinear FMCW radar; online detection; oscillator phase errors; surface acoustic wave reference device; velocity measurements; Acoustic signal detection; Acoustic waves; Doppler radar; Phase detection; Radar detection; Radar measurements; Signal resolution; Surface acoustic wave devices; Surface acoustic waves; Velocity measurement;
Conference_Titel :
Microwave Symposium Digest, 1998 IEEE MTT-S International
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
0-7803-4471-5
DOI :
10.1109/MWSYM.1998.705044
