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H. J. Grassl, W. R. Skinner, P. B. Hays, D. A. Gell, M. D. Burrage, D. A. Ortland, A. R. Marshall, and V. J. Abreu (1995), Atmospheric Wind Measurements with the High-Resolution Doppler Imager, Journal of Spacecraft and Rockets, VOL. 32, No. 1, PAGES 169-176, Jan-Feb, 1995.
Abstract:
The High-Resolution Doppler Imager (HRDI) on the Upper Atmospheric Research Satellite is a remote sensing instrument used to observe winds in the 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 O2 atmospheric (b1Σ+g - χ3Σ-g) band. The HRDI is a triple-etalon Fabry-Perot interferometer with a resolution of ≈0.05 cm-1 and very good white-light rejection. Careful design and calibration has limited systematic errors in the wind determination to less than 5 m/s.
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