VCO Nonlinearity Correction Scheme for a FM-CW Radar using a Reference Signal

기준 신호를 이용한 FM-CW 레이더의 VCO 비선형성 보정

  • 박형근 (한국전자통신연구원) ;
  • 김병욱 (포항공과대학교 전자전기공학과 전자파특화연구센터) ;
  • 김영수 (포항공과대학교 전자전기공학과 전자파특화연구센터)
  • Published : 1999.12.01


When a FM-CW radar is used to measure the target distance, the nonlinearity relationship between the VCO control voltage and the output frequency makes an adverse effect on the measurement accuracy. Recently, many nonlinearity correction schemes using signal processing techniques and dedicated hardwares have been studied. This paper presents a signal processing technique to compensate for the VCO nonlinearity using a reference signal. To demonstrate the validity of the presented technique, several experiments were conducted and the results show reduction of the distortion in the range profile and the resolution improvement.


FM-CW radar;Beat frequency;VCO nonlinearity


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