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- W74271470 abstract "Abstract : This document describes the selection of a laboratory-based, spectroradiometric standard to provide for the calibration of the near-infrared instrumentation of the Remote Sensing Department of the Space Sciences Application Laboratory. The goal is to provide a source whose spectral emittance is known to better than 1% over the entire near-infrared spectral region (0.8-2.5 mironm) and which can be calibrated directly at the National Institute of Standards (NIST). The source selected is a freeze-point cavity blackbody that uses a copper melt with a temperature of 1084.62C and provides an on-axis effective emissivity of > 0.999. The nominal temperature uncertainty provided by the vendor is +/-O.5C, sufficient to meet our specification. However, through the calibration (and certification) by NIST, the intent is to reduce this value to <O.15C with respect to the Nation's primary radiometric standard. Acquisition of a transfer radiometer will make it possible to extend the calibration to other cavity and variable-temperature blackbodies resident in the department. The freeze-point has the spectral coverage to provide accurate spectroradiometric calibrations in the optical, mid-wave, and longwave infrared spectral regions as well as the near-IR." @default.
- W74271470 created "2016-06-24" @default.
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- W74271470 date "2002-10-20" @default.
- W74271470 modified "2023-09-26" @default.
- W74271470 title "Radiometric Calibration Methodology for Near-Infrared Instrumentation" @default.
- W74271470 hasPublicationYear "2002" @default.
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