Dynamic modeling of a LEO satellite's motion requires precise computation of atmospheric density for drag effect modeling. Here, Jacchia-Bowman 2006 and 2008 atmospheric models are used to calculate the total mass-desnity of atmosphere. Position of the Sun is computed by JPL Ephemerides (DE430) to improve accuracy of the model.
IERS.m, test_JB2006.m, and test_JB2008.m are modified to decrease CPU time.
The image is added.
Jacchia-Bowman 2008 model is added.