One presentation demonstrated that the stability of disposal orbits for the navigation satellite systems Global Positioning System (GPS), Global Navigation Satellite System (GLONASS) and Galileo was strongly orbit-dependent.
有一个专题介绍表明，导航卫星系统、全球定位系统、全球轨道导航卫星系统和伽利略系统的稳定性对轨道依赖性很强。