PEARLSS--a model for contamination effects: description and results

Laura A. Whitlock; John Larkin Jackson

doi:10.1117/12.140748

18 December 1992 PEARLSS--a model for contamination effects: description and results

Laura A. Whitlock, John Larkin Jackson

Proceedings Volume 1754, Optical System Contamination: Effects, Measurement, Control III; (1992) https://doi.org/10.1117/12.140748
Event: San Diego '92, 1992, San Diego, CA, United States

Abstract

A method has been developed which allows optical system designers to determine the effects at the focal plane from noise generated due to contamination in a sensor's near field-of-view and deposited on system mirrors. This method is embodied in the PEARLSS code, which allows an 'end to end' simulation of contamination generation, transport, deposition, and the resulting performance degradation for spaceborne optical systems. The code is constructed in such a way as to allow trade studies over parameters such as system materials, dimensions, operating temperatures and wavebands, pointing directions, orbital locations, and ground-processing cleanliness levels. PEARLSS outputs include a 2-D map of the scattered/emitted noise at the first mirror, the BRDF there due to particle deposition, and a map of the structured noise on the focal plane of the sensor system. All of these outputs are generated as functions of time. A simple test case is run through the code to demonstrate its various capabilities.

Citation Download Citation

Laura A. Whitlock and John Larkin Jackson "PEARLSS--a model for contamination effects: description and results", Proc. SPIE 1754, Optical System Contamination: Effects, Measurement, Control III, (18 December 1992); https://doi.org/10.1117/12.140748

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