风云四号气象卫星辐射成像仪在轨温度环境适应性
投稿时间:2018-01-17  修订日期:2018-05-04  点此下载全文
引用本文:
摘要点击次数: 35
全文下载次数: 
作者单位E-mail
王淦泉① 1中国科学院红外探测与成像技术重点实验室 wganquan@mail.sitp.ac.cn 
沈霞① 1中国科学院红外探测与成像技术重点实验室  
王伟成② 1中国科学院红外探测与成像技术重点实验室  
胡炳亭③ 上海卫星工程研究所空间机热一体化技术实验室  
中文摘要:风云四号是地球静止三轴稳定平台气象卫星,装载其上的辐射成像仪受剧烈的外热流日周期和年周期变化的影响,扫描机构和主光学系统等关键部件的温度每天波动可达40℃以上。光学及支撑结构如何适应剧烈的环境温度变化,并保证良好的像质,是地球静止三轴稳定平台遥感仪器系统设计的国际性难题。多种特性材料的匹配性设计以及适当支撑结构形式的采用,是避免和减少因温度大幅波动引起的光机变形及成像质量下降的良好策略。在轨数据表明,辐射成像仪克服了昼夜温差大的不利影响,敏感恒星时的弥散斑几乎仅覆盖一个像素,而且正午和子夜结果差别不大。
中文关键词:地球静止三轴稳定平台,辐射成像仪,温控技术,热适应技术,恒星敏感
 
On Board Adaptation of Temperature of the FY-4 Meteorological Satellite Radiation Imager
Abstract:FY-4 is the satellite on geostationary three-axis stable satellite platform. Due to the influence of severe external heat flux on the daily cycle and annual cycle, temperature of the scanning fame and telescope of the imager on board will be fluctuated above 40℃. How to adapt the optical machine structure to the severe environment temperature change and ensure the good image quality are the international problem. Matching design with various material and using proper structure is avoiding and reducing distortion of structure and debasing of image. The data on board indicating, the imager has overcame adverse effect for severe fluctuate when day and night. When star sensing, each diffuse spot almost covers only one pixel, and there is not much difference between midday and midnight.
keywords:geostationary  three-axis  stable satellite  platform, radiation  imager, temperature  control technology, thermal  adaptation technology, star  sensing
  查看/发表评论  下载PDF阅读器

版权所有:《红外与毫米波学报》编辑部