Polarimetric imaging with the 91GHz radiometer SPIRA

A. Murk; O. Stähli; C. Mätzler; M. Canavero; R. Oechslin; P. Wellig; D. Nötel; H. Essen

doi:10.1117/12.865150

12 October 2010 Polarimetric imaging with the 91GHz radiometer SPIRA

A. Murk, O. Stähli, C. Mätzler, M. Canavero, R. Oechslin, P. Wellig, D. Nötel, H. Essen

Proceedings Volume 7837, Millimetre Wave and Terahertz Sensors and Technology III; 78370F (2010) https://doi.org/10.1117/12.865150
Event: SPIE Security + Defence, 2010, Toulouse, France

Abstract

The Scanning Polarimetric Imaging Radiometer (SPIRA) is a passive microwave imaging system operating around 91 GHz. It consists of a two orthogonally polarized receiver channels and an analog adding correlator network with 2 GHz bandwidth, which can measure all four Stokes parameters simultaneously by scanning the scene with an offset parabolic reflector on an elevation over azimuth scanner. In October 2008 the SPIRA instrument has participated in the joint Swiss-German Radiometer Experiment Thun where it has been operated in parallel with two PMMW systems of Fraunhofer Institut fur Hochfrequenzphysik und Radartechnik and an IR camera. During this measurement campaign different camouflage kits, vehicles and persons with hidden threats have been observed together with reference objects. This paper gives an overview of the three different instruments and discusses selected images of the joint measurement campaign.

Citation Download Citation

A. Murk, O. Stähli, C. Mätzler, M. Canavero, R. Oechslin, P. Wellig, D. Nötel, and H. Essen "Polarimetric imaging with the 91GHz radiometer SPIRA", Proc. SPIE 7837, Millimetre Wave and Terahertz Sensors and Technology III, 78370F (12 October 2010); https://doi.org/10.1117/12.865150

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