Description: Simplified perturbations models are a set of five mathematical models (SGP, SGP4, SDP4, SGP8 and SDP8) used to calculate orbital state vectors of satellites and space debris relative to the Earth-centered inertial coordinate system. This set of models is often referred to collectively as SGP4 due to the frequency of use of that model particularly with two-line element sets produced by NORAD and NASA.
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Cpp\ast2body.cpp
...\ast2body.h
...\astiod.cpp
...\astiod.h
...\astmath.cpp
...\astmath.h
...\asttime.cpp
...\asttime.h
...\coordfk5.cpp
...\coordfk5.h
...\debug1.cpp
...\debug2.cpp
...\debug3.cpp
...\debug4.cpp
...\debug5.cpp
...\debug6.cpp
...\debug7.cpp
...\eoppn1.txt
...\eopspw.cpp
...\eopspw.h
...\msis00.cpp
...\msis00.h
...\msiscom.cpp
...\msiscom.h
...\nut80.dat
...\sgp4-ver.tle
...\sgp4dc.cpp
...\sgp4dc.h
...\sgp4ext.cpp
...\sgp4ext.h
...\sgp4io.cpp
...\sgp4io.h
...\sgp4unit.cpp
...\sgp4unit.h
...\tcppver.out
...\tcppvera.out
...\testcpp.cpp
...\testcpp.exe
...\testdc.cpp
...\TWOLINE.TXT
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