Title :
Novel FM nonlinear correction method based on periodic monitoring and adaptive adjustment of FMCW source
Author :
Li Yang ; Liang Liwan ; Pan Weifeng ; Chen Yaqin ; Feng Zhenghe
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
Abstract :
A novel nonlinear correction method for FMCW systems is proposed. By periodically measuring the F/V relationship of VCO and adjusting the control signal, the shift due to change of environmental conditions and aging is compensated. Without complex PLL synthesizer, SAW reference path and real-time correcting, this method simplifies system implementation and reduces cost. Hence, it is a promising method for nonlinearity correction in FMCW system.
Keywords :
CW radar; FM radar; radar applications; F/V relationship; FM nonlinear correction method; FMCW source; adaptive adjustment; aging; control signal; environmental conditions; periodic monitoring; Aging; Costs; Digital signal processing; Frequency modulation; Linearity; Monitoring; Sensor systems; Temperature; Voltage; Voltage-controlled oscillators;
Conference_Titel :
Infrared and Millimeter Waves, 2000. Conference Digest. 2000 25th International Conference on
Conference_Location :
Beijing, China
Print_ISBN :
0-7803-6513-5
DOI :
10.1109/ICIMW.2000.893107
