Precise calculation of the integrated emissivity of a multiple-celled large-area blackbody source

Wei Zhang; Zhi Xie; Kuiming Gao

doi:10.1117/12.21859

1 September 1990 Precise calculation of the integrated emissivity of a multiple-celled large-area blackbody source

Wei Zhang, Zhi Xie, Kuiming Gao

Proceedings Volume 1311, Characterization, Propagation, and Simulation of Infrared Scenes; (1990) https://doi.org/10.1117/12.21859
Event: 1990 Technical Symposium on Optics, Electro-Optics, and Sensors, 1990, Orlando, FL, United States

Abstract

Precise calculation of integrated emissivity of a multiple-celled large-area blackbody source has been a very complex problem. The kernel of the problem is to compute radiant exchange between the sub-cavities and a non-coaxial detector. On the basis of the method for computing radiant exchange between a cavity and a coaxial detector, a method has been developed in this paper to calculate the noncoaxial radiant exchange by which the integrated emissivity of the multiple-celled large-area blackbody source was computed accurately. The emitting area of the blackbody is of 200x200 ma that includes more than 1600 sub-cavities.

Citation Download Citation

Wei Zhang, Zhi Xie, and Kuiming Gao "Precise calculation of the integrated emissivity of a multiple-celled large-area blackbody source", Proc. SPIE 1311, Characterization, Propagation, and Simulation of Infrared Scenes, (1 September 1990); https://doi.org/10.1117/12.21859

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