Testing of highly accurate blackbodies

Harri Latvakoski; Michael Watson; Shane Topham

doi:10.1117/12.895985

16 September 2011 Testing of highly accurate blackbodies

Harri Latvakoski, Michael Watson, Shane Topham

Proceedings Volume 8154, Infrared Remote Sensing and Instrumentation XIX; 815404 (2011) https://doi.org/10.1117/12.895985
Event: SPIE Optical Engineering + Applications, 2011, San Diego, California, United States

Abstract

Many organizations, including Space Dynamics Laboratory, have built blackbodies with calculated emissivities of 0.995 to 0.9999 and estimated radiance temperature uncertainties of a few hundred mK or less. However, the calculated performance has generally not been demonstrated through testing or comparison with other highperformance blackbodies. Intercomparison is valuable; historically, when equipment or experimental results have been intercompared they are often found to disagree by more than the claimed uncertainties. Blackbody testing has been limited because testing at the required accuracy (0.1% or better in radiance) is a significant expense. Such testing becomes essential when proven, SI-traceble, absolute accuracy is required, such as for the CLARREO mission which has an absolute accuracy requirement of 0.1 K (3 sigma) at 220 K over most of the thermal infrared and needs high-performance blackbodies to support this requirement. Properly testing blackbodies requires direct measurement of emissivity and accurate measurement of radiance or comparison of radiance from two blackbodies. This presentation will discuss these testing needs, various types of testing, and test results for a CLARREO prototype blackbody.

Citation Download Citation

Harri Latvakoski, Michael Watson, and Shane Topham "Testing of highly accurate blackbodies", Proc. SPIE 8154, Infrared Remote Sensing and Instrumentation XIX, 815404 (16 September 2011); https://doi.org/10.1117/12.895985

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available