Baffle knife-edge radius requirements for exoatmospheric interceptors and surveillance sensors

Thomas Gregg Carter

doi:10.1117/12.140719

12 February 1993 Baffle knife-edge radius requirements for exoatmospheric interceptors and surveillance sensors

Thomas Gregg Carter

Proceedings Volume 1753, Stray Radiation in Optical Systems II; (1993) https://doi.org/10.1117/12.140719
Event: San Diego '92, 1992, San Diego, CA, United States

Abstract

The knife-edges of baffle vanes can specularly reflect out-of-field optical radiation in such a manner that it can scatter from the primary mirror into the field-of-view thereby degrading the performance of the optical sensor. Decreasing the radius of curvature of the knife-edges is an obvious technique for minimizing this effect. However, the x-ray hardness of the baffle vanes is negatively impacted by decreasing the radius of curvature of the knife-edges. Thus, there are tradeoff considerations on the radius of curvature of the baffle knife-edges. This results in a need for an accurate requirement on the radius of curvature of the baffle knife-edges. The Physitron-developed computer simulation KNIFEDGE is used to compute the required baffle knife-edge radius for exoatmospheric interceptors and surveillance sensors. A scaling expression is then derived that allows the results to be scaled to sensor designs other than those considered in the investigation.

Citation Download Citation

Thomas Gregg Carter "Baffle knife-edge radius requirements for exoatmospheric interceptors and surveillance sensors", Proc. SPIE 1753, Stray Radiation in Optical Systems II, (12 February 1993); https://doi.org/10.1117/12.140719

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KEYWORDS

Sensors

Surveillance

Mirrors

Sun

Target detection

Computer simulations

Signal to noise ratio

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