摘要
利用低地球轨道 LEO(Low Earth Orbit)卫星所载 GPS接收机探测地球大气的分层结构是上世纪80年代后期才发展起来的新技术。不同的 LEO卫星 ,将使发生的掩星事件数量和分布有所差别。在一定的大气折射指数分布模型和现有 GPS星座的假设条件下 ,利用射线追踪法模拟了掩星事件 ,并讨论了 LEO卫星的轨道倾角和高度对掩星事件发生的数量和分布的影响 ,其结论对实际发射
Since late 1980s,a new technique has been developed to exploit the atmosphere by using the receiver installed on LEO satellite. If LEO satellite orbit changes, then the GPS occultation event's number and distribution will be different. Giving a vertical profile of atmospheric refractive index, this paper simulates the GPS occultation event at the GPS constellation by using ray tracing techniques, and discusses the effect of LEO satellite's orbit inclination and orbit height on occultation event's number and distribution. The results will be valuable when the LEO satellite is launched.
出处
《解放军理工大学学报（自然科学版）》
EI
2002年第2期85-89,共5页
Journal of PLA University of Science and Technology(Natural Science Edition)
