TY - GEN
T1 - A digital post-distortion technique for noncontact accurate movement measurement using interferometric radar
AU - Gu, Changzhan
AU - Li, Changzhi
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/7/24
Y1 - 2015/7/24
N2 - Signal distortion may happen in conventional accoupled interferometric radar when measuring slow target movements. Existing solutions to preserve signal integrity add to hardware complexity and are at extra cost. In this paper, a digital post-distortion (DPD) technique is proposed to compensate the signal distortion in baseband digital domain. For the first time, at no extra hardware cost, an ac-coupled interferometric radar can be used to measure slow movements without losing any signal information-even those with stationary moment. The DPD technique is realized by applying a compensation function, which is the inverse of the baseband system response and obtained in hardware calibration, to the digitized baseband I/Q signals. Both simulation and experimental results show that the proposed technique is robust to recover distorted signals.
AB - Signal distortion may happen in conventional accoupled interferometric radar when measuring slow target movements. Existing solutions to preserve signal integrity add to hardware complexity and are at extra cost. In this paper, a digital post-distortion (DPD) technique is proposed to compensate the signal distortion in baseband digital domain. For the first time, at no extra hardware cost, an ac-coupled interferometric radar can be used to measure slow movements without losing any signal information-even those with stationary moment. The DPD technique is realized by applying a compensation function, which is the inverse of the baseband system response and obtained in hardware calibration, to the digitized baseband I/Q signals. Both simulation and experimental results show that the proposed technique is robust to recover distorted signals.
KW - Interferometric radar
KW - compensation
KW - distortion
KW - post-distortion
KW - signal integrity
UR - http://www.scopus.com/inward/record.url?scp=84946101058&partnerID=8YFLogxK
U2 - 10.1109/MWSYM.2015.7166903
DO - 10.1109/MWSYM.2015.7166903
M3 - Conference contribution
AN - SCOPUS:84946101058
T3 - 2015 IEEE MTT-S International Microwave Symposium, IMS 2015
BT - 2015 IEEE MTT-S International Microwave Symposium, IMS 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - IEEE MTT-S International Microwave Symposium, IMS 2015
Y2 - 17 May 2015 through 22 May 2015
ER -