Phase error and associated cross-polarization effects in cassegrainian-fed microwave antennas

Phase error and cross-polarization effects in Cassegrainian and microwave antenna

Digital computer analysis and design of a subreflector of complex shape

Digital computer technique for computing scattered pattern of complex hyperboloid subreflector in Cassegrain antenna feed system

An investigation of the solar cycle response of odd-nitrogen in the thermosphere

This annual report covers the first year of funding for the study of the solar cycle variations of odd-nitrogen (N((sup 2)D), N((sup 4)S), NO) in the Earth's thermosphere. The study uses the extensive data base generated by the Atmosphere Explorer (AE) satellites, and the Solar Mesosphere Explorer Satellite. The AE data are being used, for the first time, to define the solar variability effect on the odd-nitrogen species through analysis of the emissions at 520 nano-m from N((sup 2)D) and the emission from O(+)((sup 2)P). Additional AE neutral and ion density data are used to help define and quantify the physical processes controlling the variations. The results from the airglow study will be used in the next two years of this study to explain the solar cycle changes in NO measured by the Solar Mesosphere Explorer

Millimeter-wave radiometry for radio astronomy Final report, Nov. 1965 - 31 Dec. 1967

Noise, gain, and antenna data for millimeter wave radiometers, and lunar eclipse observation