Abstract
We present the apparent optical performance variation of an infrared sensor caused by laminar flow field surrounding a highly supersonic projectile with cone shape head. An optical ray tracing model was constructed and numerical simulations of the aero-optical effects were performed by computational fluid dynamics (CFD) analysis and isodensity surface based ray tracing computation. To maximize modeling and computation efficiency, the number of sampling isodensity layers was reduced to less than 5 for improved discretization of the inhomogeneous gradient index (GRIN) media. Using this method, the simulation results show that the BSE is smaller than about 2.8 arcsec when the projectile flies at 25, 35, 50 km in altitude, Mach 4, 6 in speed, and 0°, 10deg; in angle of attack. The technical details and implications of the optical ray tracing model are presented together with the simulation results.
Original language | English |
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Title of host publication | Electro-Optical and Infrared Systems |
Subtitle of host publication | Technology and Applications XI |
Editors | David A. Huckridge, Reinhard Ebert |
Publisher | SPIE |
ISBN (Electronic) | 9781628413120 |
DOIs | |
Publication status | Published - 2014 |
Event | Electro-Optical and Infrared Systems: Technology and Applications XI - Amsterdam, Netherlands Duration: 2014 Sept 23 → 2014 Sept 24 |
Publication series
Name | Proceedings of SPIE - The International Society for Optical Engineering |
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Volume | 9249 |
ISSN (Print) | 0277-786X |
ISSN (Electronic) | 1996-756X |
Other
Other | Electro-Optical and Infrared Systems: Technology and Applications XI |
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Country/Territory | Netherlands |
City | Amsterdam |
Period | 14/9/23 → 14/9/24 |
Bibliographical note
Publisher Copyright:© 2014 SPIE.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering