Accuracy Bounds and Measurements of a Contactless Permittivity Sensor for Gases Using Synchronized Low-Cost mm-Wave Frequency Modulated Continuous Wave Radar Transceivers. - Andreas Och; Jochen O. Schrattenecker; Stefan Schuster; Patrick A. Hölzl; Philipp F. Freidl; Stefan Scheiblhofer; Dominik Zankl; Robert Weigel (Sensors, 2019)