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This paper presents the characterization in terms of spatial resolution and radiometric sensitivity of a W-band Total Power Radiometer (TPR). The TPR is based on a heterodyne receiver with 64 dB of gain and 6.5 dB of noise figure. An antenna system consisting on a pan-tilt scanner has been designed and built in order to aim a 100 mm offset parabolic reflector. With this system, relative temperature images of targets at a 1 m standoff range are obtained in indoor environments with an spatial resolution of 4 cm.
CitationNova, E. [et al.]. Characterization of a 94 GHz radiometric imager with mechanical beam-scanning. A: IEEE International Microwave Workshop. "IMWS 2011, Proceedings". Kaist: IEEE, 2011, p. 164-167.
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