The High Resolution Doppler Imager (HRDI) on the Upper Atmosphere Research Satellite
Abstract
The High Resolution Doppler Imager (HRDI) on the Upper Atmosphere Research Satellite is an 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 (1Sigma-3Sigma) band. HRDI is a triple-etalon Fabry-Perot interferometer that has a resolution of about 0.05/cm 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.
- Publication:
-
31st AIAA Aerospace Sciences Meeting and Exhibit
- Pub Date:
- January 1993
- Bibcode:
- 1993aiaa.meetT....G
- Keywords:
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- Fabry-Perot Interferometers;
- Remote Sensing;
- Upper Atmosphere Research Satellite (Uars);
- Wind (Meteorology);
- Atmospheric Circulation;
- Calibrating;
- Instrument Errors;
- Wind Profiles;
- Spacecraft Instrumentation