摘要
导航卫星广播星历是卫星导航定位的基础,要求有较高的精度和实时性。GPS和GLONASS广播星历形式适合于某一类卫星轨道,但存在一定局限性。利用切比雪夫多项式拟合导航卫星轨道,拟合系数作为广播星历的参数发布,这是一种新的广播星历形式,可作为各种轨道类型的导航卫星的广播星历参数,而且具有精度高、计算速度快等特点。
The broadcast ephemeris, which is the basic of satellite navigation, must be precise and real time. The GPS ephemeris and GLONASS ephemeris adapt to some kind of the satellite orbits while they have some shortcoming. A new form of broadcast ephemeris of satellite is developed which adopts the Chebyshev polynomial to fit the orbit of navigation satellite and then the fitted coefficients are broadcasted as broadcast ephemeris. This ephemeris suits all kinds of orbits of navigation satellites, and the position and velocity of the satellites can be calculated more precisely, easily and quickly.
出处
《航天控制》
CSCD
北大核心
2005年第6期9-11,21,共4页
Aerospace Control
