Spatial and spectral characterization of the Crosstrack Infrared Sounder (CrIS): test development

Frederick L. Williams; Roger A. Johnston

doi:10.1117/12.458120

18 December 2002 Spatial and spectral characterization of the Crosstrack Infrared Sounder (CrIS): test development

Frederick L. Williams, Roger A. Johnston

Proceedings Volume 4818, Infrared Spaceborne Remote Sensing X; (2002) https://doi.org/10.1117/12.458120
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

In the CrIS Acceptance Test Program two of the most important sets of requirements to verify are the spatial and spectral requirements of the sensor. The development of the test program to verify these requirements starts with the understanding of the system level requirements and how they are allocated to the sensor and module levels. Knowing the requirements and the verification method, the test developer selects the most appropriate test methodology to verify each requirement form the list of test concepts that were proposed. For the chosen concept the developer derives the requirements for the test and test equipment needed to verify the system requirements. The collimator serves as an example of the flowdown of system requirements for the spatial and spectral uncertainties to test requirements and test performance data on the collimator are reviewed. Models and simulations are also key tools for developing the tests. Examples of models used for the spatial spectral requirements are an ILS model, a gas absorption model and an edge response model. This paper serves as a summary of the processes used and requirements needed to develop the characterizations for the CrIS sensor.

Citation Download Citation

Frederick L. Williams and Roger A. Johnston "Spatial and spectral characterization of the Crosstrack Infrared Sounder (CrIS): test development", Proc. SPIE 4818, Infrared Spaceborne Remote Sensing X, (18 December 2002); https://doi.org/10.1117/12.458120

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KEYWORDS

Sensors

Collimators

Absorption

Infrared radiation

Wavefronts

Calibration

Modulation transfer functions

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