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H. J. Grassl, W. R. Skinner, P. B. Hays, M. D. Burrage, D. A. Gell, A. R. Marshall, D. A. Ortland, and V. J. Abreu (1993), The High Resolution Doppler Imager (HRDI) on the Upper Atmosphere Research Satellite, 31st Aerospace Science Meeting & Exhibit, AIAA 93-0123, Jan 11-14, 1993.
Abstract:
The High Resolution Doppler Imager (HRDI) on the Upper Atmosphere Research Satellite is an instrument used to observe winds inthe Earth's stratosphere, mesosphere and lower thermosphere. Winds are measured by determining the Doppler shift of emission (mesosphere and lower thermosphere) and absorption (stratosphere) lines of the 02 Atmospheric (1Σ-3Σ) band. HRDI is a triple-etalon Fabry-Perot interferometer that has a resolution of ~0.05 cm-1 and very good white light rejection. Careful design and calibration has permitted systematic errors in the wind determination in the stratosphere to be less than 10 m/s.
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