Extended ellipse-based reconstruction algorithm for six-port radar

S Linz, F Lurz, R Weigel… - 2019 IEEE Radio and …, 2019 - ieeexplore.ieee.org
2019 IEEE Radio and Wireless Symposium (RWS), 2019ieeexplore.ieee.org
This work proposes a new approach to calibrate six-port displacement sensors without the
use of calibration standards or well-known target positions. The detectors' nonlinearities can
be also compensated in this one-step cali-bration. An implicit equation of a so-called
squircle is used to approximate measured I/Q data of arbitrary and unknown target positions.
It is demonstrated with measurement data, that the squircle is a suitable model to describe
errors caused by power imbalance, crosstalk or parasitic reflections as well as detector …
This work proposes a new approach to calibrate six-port displacement sensors without the use of calibration standards or well-known target positions. The detectors' nonlinearities can be also compensated in this one-step cali-bration. An implicit equation of a so-called squircle is used to approximate measured I/Q data of arbitrary and unknown target positions. It is demonstrated with measurement data, that the squircle is a suitable model to describe errors caused by power imbalance, crosstalk or parasitic reflections as well as detector nonlinearities.
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