• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Sensors, systems, and next-generation satellites XIII >The Reduced Background Calibration Facility for Detectors and Radiators at the Physikalisch-Technische Bundesanstalt
【24h】

The Reduced Background Calibration Facility for Detectors and Radiators at the Physikalisch-Technische Bundesanstalt

机译：Physikalisch-Technische Bundesanstalt的探测器和辐射器的降低的背景校准设施

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The Physikalisch-Technische Bundesanstalt (PTB) operates a Reduced Background Calibration Facility (RBCF) which provides traceable calibrations of space based infrared remote sensing experiments in terms of radiation temperature and spectral radiance. Traceable measurements from space require the use of calibrated stable detector systems and/or calibration standards on board of the satellites. In any case they should be calibrated under space like conditions to ensure traceability at a minimized uncertainty. This is possible with the RBCF which enables the calibration of radiators and detectors under cryogenic and/or vacuum conditions.rnThe general concept of the RBCF is to connect several sources and detectors under vacuum via a liquid nitrogen cooled beamline. The beamline connects a source- with a detector chamber which also incorporate cooling facilities. Translation units in both chambers enable the RBCF to compare and calibrate different sources and detectors at cryogenic temperatures and under a common vacuum.rnThe radiation of the reference sources and the source under test can additionally be imaged on a vacuum Fourier-Transform Spectrometer (FTIR) to allow spectrally resolved measurements. The FTIR covers the wavelength range from 0.4 μm to 1000 μm. Here several detectors are employed, ranging from an Si-Photodiode to a liquid helium cooled Si-composite bolometer. Two reference blackbody radiators enable measurements with respect to two reference temperatures, simultaneously. Hereby a compensation of background radiation can be performed and the measurement of very faint sources becomes possible.
机译：联邦物理技术局（PTB）拥有简化的背景校准设施（RBCF），可根据辐射温度和光谱辐射度对基于空间的红外遥感实验提供可追溯的校准。从太空进行可追溯的测量需要在卫星上使用经过校准的稳定探测器系统和/或校准标准。无论如何，都应在类似空间的条件下对其进行校准，以确保在最小的不确定性下可追溯。 RBCF可以做到这一点，它可以在低温和/或真空条件下对辐射器和检测器进行校准。RBCF的一般概念是通过液氮冷却的束线在真空下连接多个源和检测器。束线将源与检测器室连接起来，检测器室也装有冷却设备。两个腔室中的转换单元使RBCF能够在低温和普通真空下比较和校准不同的源和检测器。rn还可以在真空傅里叶变换光谱仪（FTIR）上对参考源和被测源的辐射进行成像。以进行光谱解析的测量。 FTIR覆盖从0.4μm到1000μm的波长范围。这里使用了几种检测器，范围从Si光电二极管到液氦冷却的Si复合辐射热计。两个参考黑体辐射器可同时针对两个参考温度进行测量。由此可以执行背景辐射的补偿，并且非常微弱的源的测量成为可能。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号