Abstract

The High Resolution Doppler Imager (HRDI) is a triple etalon Fabry-Perot Interferometer designed to measure Doppler shifts of absorption and emission lines in the Earth's atmosphere. The instrument will be flown on board the Upper Atmosphere Research Satellite (UARS) in the early 1990's. The goal is to measure the vector winds in the stratosphere (10 to 40 km) and mesosphere and lower thermosphere (80-120 km) during the day, and the mesosphere at night to an accuracy of 5m/s. In addition to winds, the instrument will also determine temperatures, cloud top heights, and some aerosol properties. This paper briefly describes the HRDI instrument, the wind measurement concept, and the operation scenario.

© 1990 Optical Society of America