Title :
Influence of systematic frequency-sweep non-linearity on object distance estimation in FMCW/FSCW radar systems
Author :
Pichler, Markus ; Stelzer, Andreas ; Gulden, Peter ; Vossiek, Martin
Author_Institution :
Linz Center of Competence in Mechatronics, Austria
Abstract :
The performance of frequency estimation procedures for sinusoidal signals in the presence of phase perturbations plays an important role in continuous-wave radar systems for distance measurement, as it directly determines the ranging accuracy. For the most widely used frequency estimator, the fast Fourier transformation, the influence of deterministic deviations of the transmit signal from the ideal curve in FMCW/FSCW radars is investigated, quantified and verified with measured radar data.
Keywords :
CW radar; FM radar; Fourier transforms; phase modulation; FMCW radar; Fourier transformation; continuous wave radar; distance measurement; frequency stepped CW radar; ideal curve; object distance estimation; phase perturbations; sinusoidal signals; systematic frequency-sweep nonlinearity; transmit signal; Chirp modulation; Frequency estimation; Frequency measurement; Low pass filters; Power capacitors; RF signals; Radar antennas; Radar measurements; Radio frequency; Sampling methods;
Conference_Titel :
Microwave Conference, 2003. 33rd European
Print_ISBN :
1-58053-834-7
DOI :
10.1109/EUMC.2003.1262872
