Computer simulations of energetic neutral atom imaging from low and high altitude spacecraft
| Autor: | Edmond C. Roelof, C. J. Chase |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Physics
Atmospheric Science Energetic neutral atom Spacecraft business.industry Astrophysics::Instrumentation and Methods for Astrophysics Aerospace Engineering Astronomy and Astrophysics law.invention Orbiter Geophysics Mission design Space and Planetary Science law Computer Science::Computer Vision and Pattern Recognition Saturn Physics::Space Physics Wide dynamic range General Earth and Planetary Sciences Angular resolution Astrophysics::Earth and Planetary Astrophysics business Remote sensing |
| Zdroj: | Advances in Space Research. 20:355-359 |
| ISSN: | 0273-1177 |
| DOI: | 10.1016/s0273-1177(97)00691-1 |
| Popis: | ENA cameras are being readied for flight on the Argentine SAC-B low-altitude mission and the NASA Cassini Saturn orbiter and an upcoming NASA MidEx mission (IMAGE) will be devoted completely to magnetospheric imaging. Computer simulation of ENA images has proved an indispensable tool for both scientific data analysis and instrument/mission design for a number of reasons. ENA emission is usually “optically thin”, so it is very difficult to imagine how magnetospheric ion distributions will image from different vantage points. ENA emission has a wide dynamic range in intensity, and contemporary cameras do not always have angular resolution sufficient to resolve the structures. Consequently, image simulation is an essential element in the extraction of the ion distributions from ENA images. Examples of simulations from past, present, and future missions that illustrate these effects are presented. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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