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Laboratory measurements of microwave and millimeter-wave properties of planetary atmospheric constituents
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Steffes, Paul G. |
| Copyright Year | 1989 |
| Description | Accurate data on microwave and millimeter-wave properties of potential planetary atmospheric constituents is critical for the proper interpretation of radio occultation measurements, and of radio astronomical observations of both continuum and spectral line emissions. Such data is also needed to correct for atmospheric effects on radar studies of surface reflectivity. Since the refractive and absorptive properties of atmospheric constituents often vary drastically from theoretically-predicted profiles, especially under the extreme conditions characteristic of the planetary atmosphere, laboratory measurements under simulated planetary conditions are required. This paper reviews the instrumentation and techniques used for laboratory measurement of the refractivity and absorptivity of atmospheric constituents at wavelengths longward of 1 mm, under simulated planetary conditions (temperature, pressure, and broadening gases). Techniques for measuring both gases and condensates are considered. Also reviewed are the relative accuracies of the various techniques. Laboratory measurements are reviewed which have already been made, and additional measurements which are needed for interpretation of data from Venus and the outer planets, are highlighted. |
| File Size | 908013 |
| Page Count | 22 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19900001499 |
| Archival Resource Key | ark:/13960/t8qc4xd9q |
| Language | English |
| Publisher Date | 1989-01-01 |
| Access Restriction | Open |
| Subject Keyword | Lunar And Planetary Exploration Planetary Atmospheres Refractivity Environment Simulators Spectroscopic Analysis Absorptivity Gases Radio Occultation Radio Astronomy Atmospheric Composition Condensates Millimeter Waves Cavity Resonators Fabry-perot Interferometers Microwaves Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
