학술논문

Low-noise receiver for microwave ozone measurements
Document Type
Author abstract
Source
Radiophysics and Quantum Electronics. January, 2012, Vol. 54 Issue 8-9, p638, 10 p.
Subject
Nuclear radiation -- Measurement
Atmospheric ozone -- Measurement
Mesosphere -- Measurement
Air pollution -- Measurement
Language
English
ISSN
0033-8443
Abstract
We describe a low-noise superheterodyne receiver with a Schottky-diode for a new mobile microwave ozonometer operated at a frequency of 142.2 GHz, which is designed to measure the vertical profile of ozone distribution in the stratosphere and mesosphere. Calculated and experimental characteristics of the input quasioptical units of the receiver at the Gaussian beams and the measurement results for the directional pattern of the receiver antenna and the noise temperature of the receiver are presented.
UDC 551.510 + 621.382.2 1. INTRODUCTION The ozone layer of the atmosphere not only protects terrestrial life from the UV solar radiation, but also significantly influences the thermal balance and [...]