Radiometric electrical line sensor in combination with mechanical rotating mirror for creating 2D image

摘要

The present invention relates to the field of two dimensional (2D) radiometric imaging. The present invention especially relates to a sensor unit. The sensor unit according to the present invention comprises a reflecting element mounted so as to be rotatable around an axis of rotation and a line sensor operating in the microwave, millimeter wave and/or terahertz frequency range and having its field of view directed towards the reflecting element, whereby the axis of rotation intersects with a reflection plane of the reflecting element.