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首页> 外文会议>Conference on Optical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research V; Aug 7-8, 2003; San Diego, California, USA >The High Resolution Doppler Imager: Status update 12 years after launch
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The High Resolution Doppler Imager: Status update 12 years after launch

机译：高分辨率多普勒成像仪：发射12年后状态更新

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摘要

The High Resolution Doppler Imager (HRDI) on the Upper Atmosphere Research Satellite (UARS) has been measuring winds in the stratosphere, mesosphere and lower thermosphere since November, 1991. The winds are determined by measuring the Doppler shift of emission and absorption lines in the O_2 Atmospheric Band that are located between 630 and 762 nm. HRDI is a triple-etalon Fabry-Perot interferometer that has a resolution of ～0.05 cm~(-1) and very good white light rejection. A multi-channel detector with 31 channels is used to examine a spectral region 0.5 cm~(-1) wide and an adjustable filter wheel permits the selection of any one of 13 spectral bands. The long life of this instrument has presented many challenges in keeping the calibrations current and in compensating for inevitable degradations in instrument and spacecraft performance. Some of the problems with the UARS spacecraft the affect HRDI operations are: limited power due to the solar array drive failure; loss of data resulting from a failure of the tape recorders, and loss of attitude knowledge caused by the failure of the star trackers. HRDI has shown little loss in capability over the years with only a decrease in the azimuth rate of the telescope motor a significant sign of aging. This paper will discuss some of these challenges and how they have been met.
机译：自1991年11月以来，高空研究卫星（UARS）上的高分辨率多普勒成像仪（HRDI）一直在测量平流层，中层和低热层中的风。通过测量发射和吸收线的多普勒频移来确定风。位于630至762 nm之间的O_2大气带。 HRDI是一种三标准具的Fabry-Perot干涉仪，分辨率约为〜0.05 cm〜（-1），具有很好的白光抑制率。具有31个通道的多通道检测器用于检查0.5 cm〜（-1）宽的光谱区域，并且可调滤光轮允许选择13个光谱带中的任何一个。仪器的使用寿命长，在保持校准最新以及补偿仪器和航天器性能不可避免的下降方面提出了许多挑战。 UARS航天器影响HRDI操作的一些问题是：由于太阳能电池阵列驱动器故障而导致的功率有限；磁带录音机故障导致数据丢失，以及星型跟踪器故障导致姿态知识丢失。多年来，HRDI表现出很少的功能损失，只是望远镜电机的方位角速率减小才表明老化。本文将讨论其中的一些挑战以及如何解决这些挑战。

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