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Proceedings Paper

Simulation of effects on sensor performance from particulates in the near field-of-view
Author(s): John Larkin Jackson; Laura A. Whitlock
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Paper Abstract

A computer model has been developed to determine the degradation of sensor performance due to contamination. These particulates may either by suspended in the near field-of-view or deposited on optical surfaces within the system. This system response simulation, PEARLSS (Particulate Effects Analysis on Response Levels of Spaceborne Sensors), is currently able to model many of the key dynamics of the particles to determine their distribution in the field-of- view and on the mirrors. Light from various sources is scattered off of the particulates. This radiation is mapped as a noise scene at the first mirror and the focal plane. The code is intended for performing parametric studies on design parameters such as sunshade geometry, system materials, temperatures, pre-launch cleanliness levels, and pointing directions. Sources of radiation currently modeled are the Sun and Earth, as well as user-defined sources. An overview of the simulation's approach to tracking contamination and scattered radiation is given.

Paper Details

Date Published: 21 September 1992
PDF: 11 pages
Proc. SPIE 1687, Characterization, Propagation, and Simulation of Sources and Backgrounds II, (21 September 1992); doi: 10.1117/12.137838
Show Author Affiliations
John Larkin Jackson, Nichols Research Corp. (United States)
Laura A. Whitlock, Nichols Research Corp. (United States)


Published in SPIE Proceedings Vol. 1687:
Characterization, Propagation, and Simulation of Sources and Backgrounds II
Dieter Clement; Wendell R. Watkins, Editor(s)

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