URBANA METEOR-RADAR SYSTEM: DESIGN, DEVELOPMENT, AND FIRST OBSERVATIONS.

The design, development, and first observations of a high-power meteor-radar system located near Urbana, Illinois are described. The roughly five-fold increase in usable echo rate compared to other facilities, along with automated digital data processing and interferometry measurement of echo arrival angles, permits unsurpassed observations of tidal structure and shorter period waves. Such observations are discussed at length. Also, the technique of using echo delay rates to infer density and scale height and the technique of inferring wind shear from radial acceleration are examined. Lastly, an original experiment to test a theory of the D-region winter anomaly is presented.