Patent ID: 11874105
Assignee: INOEX GMBH INNOVATIONEN UND AUSRÜSTUNGEN FÜR DIE EXTRUSIONSTECHNIK
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 10:
11. A method for measuring a measured object including at least the following steps:
providing or positioning an antenna arrangement made of a plurality of terahertz (THz) transceivers such that an optical axis of the antenna arrangement is aligned with the measured object and/or perpendicular to an axis of symmetry,
carrying out a first terahertz (THz) measurement of the measured object in the first measuring position, said plurality of terahertz (THz) transceivers of the antenna matrix each at times actively emitting a terahertz (THz) transmission beam along or parallel to its optical axis which is partially reflected from the measured object back to the antenna arrangement,
said THz transceivers at times passively detecting reflected terahertz (THz) radiation,
successively adjusting the antenna arrangement along an adjustment direction into several measuring positions in which the optical axis is aligned with measured object and/or perpendicular to the axis of symmetry, and
carrying out further terahertz (THz) measurements while putting out measuring signals,
evaluating the measuring signals from said several measuring positions, where the measuring signals of the individual terahertz (THz) transceivers are processed together by means of a synthetic aperture radar (SAR) evaluation process and a virtual model of a cross-sectional area of the measured object is determined,
determining the reference surfaces and layer thicknesses as distances of the reference surfaces in the virtual model.