Concepts involving active and passive microwave systems for soil-moisture monitoring are discussed. It is shown that the first major development efforts should be directed toward the simpler passive design concepts. Subsequently, five passive design concepts for a microwave radiometer spacecraft are outlined and compared. Some common technology needs, such as large space structures and controls, are shown to exist. Also, some peculiar technology needs are identified, such as complicated phasing networks, dielectric lenses, tapered illumination, and reflector-surface irregularity and distortion control techniques. More detailed studies to address these design concepts and assess the associated technology needs are recommended.
Radiometer design concepts for large aperture microwave radiometer spacecraft
1981-12-01
Sonstige
Keine Angabe
Englisch
A microwave radiometer spacecraft
NTRS | 1978
|A microwave radiometer spacecraft
Tema Archiv | 1979
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