High-Resolution Doppler Imager on the Upper Atmosphere Research Satellite
High-Resolution Doppler Imager on the Upper Atmosphere Research Satellite
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DOI：
10.1117/12.187565
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发表时间：
1994-09
期刊：
影响因子：
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通讯作者：
W. Skinner;P. Hays;H. Grassl;D. Gell;M. Burrage;A. Marshall;D. Ortland
中科院分区：
文献类型：
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作者：
W. Skinner;P. Hays;H. Grassl;D. Gell;M. Burrage;A. Marshall;D. Ortland
自1991年11月以来，高层大气研究卫星上的高分辨率多普勒成像仪一直在提供平流层、中间层和低热层风场的测量。对各种校准数据的检查表明，该仪器自发射以来一直非常稳定。该仪器的热漂移约为30米/秒/摄氏度（略取决于波长），自发射以来的长期时间漂移约为80米/秒。这些影响在数据处理中被消除，仪器稳定性的不确定性约为2 m/s。自推出以来，由于采用了一种新方法，仪器的温度控制得到了显著改善。初始温度控制将仪器温度保持在约+/-1 ℃。改进后的方法使光具座的温度保持恒定，使仪器温度保持在0.2 ℃左右。校准表明仪器的灵敏度变化很小。检测器响应没有显示出退化，并且光学器件没有改变它们的透射率。
The high resolution Doppler imager (HRDI) on the Upper Atmosphere Research Satellite has been providing measurements of the wind field in the stratosphere, mesosphere, and lower thermosphere since November 1991. Examination of various calibration data indicates the instrument has remained remarkably stable since launch. The instrument has a thermal drift of about 30 m/s/ degree(s)C (slightly dependent on wavelength) and a long-term temporal drift that has amounted to about 80 m/s since launch. These effects are removed in the data processing leaving an uncertainty in the instrument stability of approximately 2 m/s. The temperature control of the instrument has improved significantly since launch as a new method was implemented. The initial temperature control held the instrument temperature at about +/- 1 degree(s)C. The improved method, which holds constant the temperature of the optical bench instead of the radiator, keeps the instrument temperature at about 0.2 degree(s)C. The calibrations indicate very little change in the sensitivity of the instrument. The detector response has shown no degradation and the optics have not changed their transmittance.