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This paper describes the W-band fully polarimetric radiometer design and the measurement results of material's emissivity of rubber sheet and water as examples using developed radiometer. The measured brightness temperatures of sample materials depend on incident angle. For this angle dependent measurement, the test set-up was designed. Using the measured brightness temperature, the characteristics...
In this paper, we have investigated the characteristics of road surfaces status depending on electromagnetic polarization in vertical and horizontal, respectively. The emissivity of road surface of V-, H-polarization shows the different brightness signal level in receiver and it can detect by the experiment the different road surface status like dry, wet or ice covered road. This technology can be...
In this paper, we developed and experimented of the W-band 1-D focal plane array (FPA) passive imaging radiometer which was called by Millimeter-wave Imaging Radiometer Equipment (MIRAE). This consists of quasi-optics including a dielectric aspheric lens and a metal mirror as a reflector, 30 channels FPA receiver based on the direct conversion type, scanner, image processor and displayer. To get 2-D...
The design method of calibration standard of fully polarimetric radiometer to measure the Stokes parameters at W-band is proposed. The information of 45° in a linear and a circular polarization are calibrated using the wire grid with thin Teflon substrate and the retardation plate which was implemented by dielectric plate with grove. The calibration standards show good performance on orthogonal channel...
The W-band fully polarized radiometer with the detail calibration is presented. The calibration standard for the measurement of Stokes parameters was designed and the measured results are presented. For the calibration standard, a wideband analog correlator was designed and described the performance. The correlation coefficient of the U and V Stokes parameter was 0.92 and 0.96, respectively. The detail...
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