Mathematical Problems in Engineering / 2009 / Article / Fig 8

Research Article

Some Initial Conditions for Disposed Satellites of the Systems GPS and Galileo Constellations

Figure 8

Time evolution of the eccentricity (a) and the critical angle (b) obtained from integration of (4.1). Initial conditions: a = 4.805 𝑅 𝑇 , e = 0.005, I = 56.06°. Initial ( 𝜔 , Ω ): (24°, 0°): black, (23°, 2°): red, (18°, 8°): blue. These initial conditions were extracted from the red square shown in Figure 6. Initial conditions of the Moon: aL = 380, 367.2 km, eL = 0.0276, IL = 18.28°, Ω 𝐿 = 1 2 . 1 1 , 𝜔 𝐿 = 9 2 , and 𝑙 𝐿 = 3 3 7 . As expected, the eccentricity remains less than 0.005 for at least 250 years.
510759.fig.008a
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510759.fig.008b
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