Title :
A novel method for beat frequency error correction for low cost FMCW radar using VCO sweep characteristics
Author :
Park, Jung Dong ; Kim, Wan Joo ; Lee, Chang Won
Author_Institution :
Agency for Defense Dev., Daejeon, South Korea
Abstract :
In this paper, we present a simple nonlinearity correction method for a linear frequency modulated continues wave (FMCW) radar. When a typical varactor-tuned voltage controlled oscillator (VCO) is used as the source, we find that the range resolution could be dramatically improved by proper time gating of the beat signals with nonlinearity compensation circuitry. We propose how to optimize the time gating interval and position for an implemented W-band transceiver and verify the improvement of target selectivity of an FMCW radar sensor.
Keywords :
CW radar; FM radar; error compensation; error correction; transceivers; voltage-controlled oscillators; FMCW radar; VCO sweep characteristics; W-band transceiver; beat frequency; beat signals; error correction; frequency modulated continues wave radar; nonlinearity compensation circuitry; nonlinearity correction; range resolution; target selectivity; time gating; Bandwidth; Chirp modulation; Costs; Error correction; Frequency; Radar applications; Radar measurements; Signal resolution; Voltage; Voltage-controlled oscillators;
Conference_Titel :
Microwave Conference, 2005 European
Print_ISBN :
2-9600551-2-8
DOI :
10.1109/EUMC.2005.1610384
