Development of a Millimeterwave Instrument for Measurements of Strato-Mesospheric Ozone Using a Superconductive Receiver

Abstract

Department of Physics and Astrophysics of the Nagoya University, Fujitsu Laboratories Ltd. and Fujitsu VLSI Ltd. are developing millimeterwave superconductive receivers. In 85-115 GHz band, these laboratories have constructed an ozone sensor for monitoring strato-mesospheric ozone employing a superconductive receiver with a receiver noise of 34 K (SSB). The spectrometer is an acousto-optical type and covers a frequency range of 70 MHz with a frequency resolution of 35 kHz. Using the load switching technique, observations are carried out and vertical profiles of ozone concentrations are retrieved in the altitude range between 30 and 80 km.