Compensation of self-RCS and IQ-demodulation imperfections of continuous-wave radar systems

Citation
26th International Radar Symposium, IRS 2025
Contribution to Conference
26th International Radar Symposium, IRS 2025  
Publisher DOI
10.23919/IRS64527.2025.11046051
Scopus ID
2-s2.0-105010830647
Publisher
IEEE
ISBN
979-8-3315-0663-6
978-3-00-079305-9
This contribution discusses the calibration of continuous-wave radar sys-tems used for relative displacement measurements. To address systematic measurement errors arising from receiver inphase-quadrature (IQ) imperfections as well as the own radar cross section of the radar device (self-RCS), a model of the radar response that accounts for both effects is presented. Given the model parameters, which are retrieved based on calibration measurements, the effects of both IQ-imbalance and self-RCS can be removed. Measurements with a custom 24-GHz six-port-based radar system validate the proposed concept enabling highly accurate relative displacement measurements.
DDC Class
600: Technology