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<font color=#556B2F>'''OPERA'''</font> is a [https://cnes.fr/fr '''CNES'''] tool allowing to estimate long and middle term Earth reentry dates (some months to one week in advance) thanks to <font color=#FF8C00 title="Two Lines Elements">TLE</font> | <font color=#556B2F>'''OPERA'''</font> is a [https://cnes.fr/fr '''CNES'''] tool allowing to estimate long and middle term Earth reentry dates (some months to one week in advance) thanks to <font color=#FF8C00 title="Two Lines Elements">TLE</font>. | ||
It allows also to compute the information on other parameters as <font color=#FF8C00 title="Surface on Mass ratio">S/M</font> or maneuvers previously occured. | |||
At last, <font color=#556B2F>'''OPERA'''</font> is able to generate automatic <font color=#FF8C00 title="Portable Document Format">PDF</font> reports with a synthesis of maneuver activity of a given object. | |||
<font color=#556B2F>'''OPERA'''</font> is usable via three modes: | <font color=#556B2F>'''OPERA'''</font> is usable via three modes: | ||
Dernière version du 20 janvier 2020 à 16:17
OPERA is a CNES tool allowing to estimate long and middle term Earth reentry dates (some months to one week in advance) thanks to TLE.
It allows also to compute the information on other parameters as S/M or maneuvers previously occured.
At last, OPERA is able to generate automatic PDF reports with a synthesis of maneuver activity of a given object.
OPERA is usable via three modes:
- GUI: its utilization is made user-friendly thanks to a graphical user interface (developed using [GENIUS] and [GENOPUS]),
- Batch,
- Library via its Java interface.
Its initialization is made by:
- A list of initial orbital parameters thanks to TLE,
- Solar activity files,
- Several other specific parameters as the reentry altitude or how to filter TLE inputs.
For flight dynamics aspects, OPERA is fully based on the [PATRIUS] library and specially about the orbit extrapolation, the propagation is done thanks to the [STELA] propagator that allows to get interesting CPU time by comparison to a full numerical propagator while keeping sufficient precision relative to the reentry date.