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SGPPrep
SGPinp = SGPPrep(tle);
Prepares extracted TLE data, such as output by TLEExtract, for use by the NORAD SGP propagators (old FORTRAN convention). It also determines which SGP model to use based on the period. In general SGP requires these units: time in minutes, distance in units of earth radii, angular quantities in radians.
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Parameters |
Description |
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tle [struct] |
Contains the TLE ephemeris data (See TLEExtract) |
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Return Values |
Description |
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SGPinp [struct] |
Processed TLE data, the output of SGPPrep |
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SGPinp.SSC [string] |
Space Surveillance Catalog Number |
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SGPinp.node0 [scalar] |
Right ascension (rad) |
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SGPinp.omega0 [scalar] |
Argument of perigee (rad) |
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SGPinp.M0 [scalar] |
Mean anomaly (rad) |
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SGPinp.i0 [scalar] |
Inclination (rad) |
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SGPinp.n0 [scalar] |
Mean motion (rad/day) |
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SGPinp.e0 [scalar] |
Eccentricity |
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SGPinp.n0dotOvr2 [scalar] |
First time derivative of Mean Motion /2 |
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SGPinp.n0ddotOvr6 [scalar] |
Second time derivative of Mean Motion /6 |
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SGPinp.BSTAR [scalar] |
BSTAR drag term |
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SGPinp.EpoJD [scalar] |
Epoch Julian Date |
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SGPinp.Period [scalar] |
Period (min) |
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SGPinp.DEEP [bool] |
Deep space propagator flag |
Hoots F., Roehrich R., Spacetrack Report No.3, 1980, pg. 70-72
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Copyright (c) MZA Associates 2009. All rights reserved.
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Description