B. E. Troy
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View article: The 90 GHz radiometric imaging
The 90 GHz radiometric imaging Open
A 90-GHz (3 mm wavelength) radiometer with a noise output fluctuation of 0.22 degrees K (RMS), with a scanning antenna beam mirror, and the data processing system are described. Real-time radiometric imaging of terrain and man-made objects…
View article: Equatorial airglow and the ionospheric geomagnetic anomaly
Equatorial airglow and the ionospheric geomagnetic anomaly Open
OGO D observations of OI (6300A) emissions reveal a global pattern in the equatorial airglow undetected from the ground-based observations. The post sunset emission rate of OI is generally asymmetrical with respect to the geomagnetic equat…
View article: The sub auroral red arc and the associated ionospheric phenomena
The sub auroral red arc and the associated ionospheric phenomena Open
This paper describes the phenomenon of the midlatitude red arc of September 29, 1967, through observations of the properties of the ionospheric plasma. The ion and electron temperatures, ion composition and density, and suprathermal electr…
View article: OGO 4 observations of ion composition and temperatures in the topside ionosphere
OGO 4 observations of ion composition and temperatures in the topside ionosphere Open
Direct measurement of the densities of various ionic constituents (H+ , He+ , and 0+ ) and the temperatures of ions and electrons have been obtained from the OGO 4 planar retarding potential analyzer in the altitude range 400-900 km.Result…