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首页> 外文会议>International conference on applications of optics and photonics >Millimeter wave radiometer installation in Rio Gallegos, southern Argentina
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Millimeter wave radiometer installation in Rio Gallegos, southern Argentina

机译：阿根廷南部里约加里戈斯的毫米波辐射计安装

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With the aim of contribution to the study of atmospheric ozone layer, a new sensitive radiometer for atmospheric minor constituents has been installed in the Observatorio Atmosferico de la Patagonia Austral, Division LIDAR, CEILAP (CITEDEF-CONICET), in October 2010. This observatory is established in the city of Rio Gallegos (51° 36' S, 69° 19' W), Argentina, close to the spring ozone hole. The millimeter wave radiometer was developed in STEL (Solar Terrestrial Environment Laboratory), Nagoya University, Japan. This passive remote sensing instrument is able to measure the ozone (O_3) amount in the high stratosphere and mesosphere continuously and automatically with a high time resolution. The millimeter wave radiometer ozone profiles will be supplemented with the ozone profiles obtained from the DIAL system existent in the observatory. The millimeter wave radiometer is based on the spectral signal detection from the atmosphere due to the molecular rotational transition of molecules under study. The operation is based on a superheterodyne system which uses a Superconductor-Insulator-Superconductor (SIS) mixer receiver operating at 203.6GHz. The SIS mixer junction consists of a sandwich structure of Nb/AlOx/Nb, and is cooled to 4.2K with a closed cycle He-gas refrigerator. Two additional heterodyne-mixed stages are realized with the aim to shift the measured spectral line until a frequency around of 500 MHz. A FFT (Fast Fourier Transform) spectrometer system is used as a back end. The aims of this work are to show the potential of the millimeter wave radiometer installed in the subpolar latitudes close to the polar ozone hole and to present the preliminary result of the first measurements.
机译：为了对大气臭氧层的研究做出贡献，2010年10月，CEILAP激光雷达分部的Atmosferico de la Patagonia Austral观测台（CITEDEF-CONICET）安装了一种新的大气微量成分敏感辐射计。成立于阿根廷里约加里戈斯市（51°S，36°S，69°19'W），靠近春季臭氧洞。毫米波辐射计是在日本名古屋大学的STEL（太阳能地球环境实验室）开发的。这种无源遥感仪器能够以高时间分辨率自动连续地测量高平流层和中层大气中的臭氧（O_3）量。毫米波辐射计的臭氧剖面将补充有从天文台中存在的DIAL系统获得的臭氧剖面。毫米波辐射计基于来自大气的光谱信号检测，这是由于所研究分子的分子旋转跃迁所致。该操作基于超外差系统，该系统使用工作在203.6GHz的超导体-绝缘体-超导体（SIS）混频器接收器。 SIS混合器结由Nb / AlOx / Nb的夹心结构组成，并使用闭环氦气制冷机冷却至4.2K。实现了两个附加的外差混频级，目的是将测得的谱线移动到500 MHz左右的频率。 FFT（快速傅立叶变换）光谱仪系统用作后端。这项工作的目的是展示安装在接近极地臭氧孔的亚极纬度中的毫米波辐射计的潜力，并展示首次测量的初步结果。

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