Concept of a Radiometer for Measurements of the Optical Depth of the Atmosphere in a 1.3-mm Window of Atmospheric Transparency

IF 0.4 4区 工程技术 Q4 ENGINEERING, MULTIDISCIPLINARY
V. F. Vdovin, A. M. Zarezin, P. M. Zemlyanukha, A. V. Kotov, I. V. Lesnov, A. S. Marukhno, K. V. Mineev, V. M. Muravev, V. I. Nosov, V. A. Salkov
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引用次数: 0

Abstract

The article presents a concept of an uncooled subterahertz radiometer designed for estimating the atmospheric absorption in the 1.3-mm atmospheric transparency window, which can possibly operate under mountain expedition conditions. Estimation of the atmospheric absorption is based on radiometric measurements of the sky brightness temperature. A comparative analysis of two typical schemes of radiometer receivers (heterodyne and tuned radio frequency receiver schemes) was carried out based on the modern stage of development of the subterahertz electronic components. The noise temperature and fluctuation sensitivity of both schemes were estimated. The results of designing a horn–lens antenna with a radiation pattern of 3° at a level of –3 dB at a frequency of 230 GHz are presented. The general structure of the high-frequency part of the radiometer is described, including some design features that are necessary to provide continuous measurements in a wide range of climatic conditions.

Abstract Image

在1.3毫米大气透明度窗口中测量大气光学深度的辐射计的概念
本文提出了一种用于估算1.3 mm大气透明窗内大气吸收的非冷却亚太赫兹辐射计的概念,该辐射计可以在山地考察条件下工作。大气吸收的估计是基于对天空亮度温度的辐射测量。根据亚太赫兹电子元件的现代发展阶段,对辐射计接收机的两种典型方案(外差式和调谐射频接收机方案)进行了比较分析。对两种方案的噪声温度和波动灵敏度进行了估计。本文介绍了一种在230 GHz频率下-3 dB水平下辐射方向图为3°的喇叭透镜天线的设计结果。描述了辐射计高频部分的一般结构,包括在大范围气候条件下提供连续测量所必需的一些设计特征。
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来源期刊
Instruments and Experimental Techniques
Instruments and Experimental Techniques 工程技术-工程:综合
CiteScore
1.20
自引率
33.30%
发文量
113
审稿时长
4-8 weeks
期刊介绍: Instruments and Experimental Techniques is an international peer reviewed journal that publishes reviews describing advanced methods for physical measurements and techniques and original articles that present techniques for physical measurements, principles of operation, design, methods of application, and analysis of the operation of physical instruments used in all fields of experimental physics and when conducting measurements using physical methods and instruments in astronomy, natural sciences, chemistry, biology, medicine, and ecology.
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