Title :
Development of a 183 GHz radiometer
Author :
Kingston, N.F. ; Nightingale, C. ; O´Connor, D.
Author_Institution :
Marconi Space Syst. Ltd., Watford, UK
Abstract :
The Advanced Microwave Sounder Unit (AMSU) is a 20-channel microwave radiometer system that is being developed for a series of polar orbiting weather satellites. The authors describe the AMSU-B instrument which uses a parabolic mirror of 22 cm aperture and operates at 89, 157 and 183.3 GHz. The high-frequency subsystem (HFSS) design, the development of low-noise GaAs Schottky diode mixers, noise temperature performance, the HFSS beamwaist and radiation patterns, and the phase locked Gunn oscillators are outlined
Keywords :
aerospace instrumentation; atmospheric measuring apparatus; microwave detectors; radiometers; 157 GHz; 183 GHz radiometer; 183.3 GHz; 20-channel microwave radiometer system; 89 GHz; AMSU; AMSU-B instrument; Advanced Microwave Sounder Unit; EHF; GaAs; Schottky diode mixers; beamwaist; noise temperature performance; phase locked Gunn oscillators; polar orbiting weather satellites; radiation patterns;
Conference_Titel :
Microwave and Millimetre-Wave Radiometry, IEE Colloquium on
Conference_Location :
London
