广播星历误差是影响卫星导航用户定位精度的重要因素之一。
Ephemeris error is one of the most important factors which affect positioning precision when satellite navigation was used.
论述了GPS监测站伪距观测量评定广播星历精度的基本方法。
This paper discusses the essential method of using GPS pseudorange data to assess the precision of broadcast ephemeris.
本文介绍了利用广播星历表计算卫星的坐标和速度的一种方法。
In this paper, a new method for calculating the coordinate and velocity of the satellite by means of the broadcast ephemeris has been presented.
本文介绍利用子午卫星的广播星历表计算卫星坐标和速度的两种方法。
In this paper, we describe two methods for computing the coordinates and velocities of satellites by using the broadcast ephemeris of the "transit" satellites.
利用切比雪夫多项式拟合广播星历的卫星坐标，以实现卫星轨道的标准化。
The Chebyshev polynomial was applied to fit satellite coordinates of the broadcast ephemeris to realize satellite orbit standardization.
描述了用于对延长的时间段确定位置信息而无需广播星历数据的设备和方法。
Devices and methods are described for determining position information without broadcast ephemeris data for extended time periods.
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。
The GPS ephemeris and GLONASS ephemeris adapt to some kind of the satellite orbits while they have some shortcoming.
分析了GPS卫星星历误差的影响特征与规律，提出了广播星历误差影响诊断与预测模型。
This paper analyzed the characters and rule of the satellite ephemeris error. It proposes the Model of the diagnosis and Forecast for the GPS broadcasting ephemeris error.
GPS和GLONASS作为当今世界上在轨运行的两大卫星导航系统，其广播星历参数的设计和算法各具特点。
Designs of the broadcast ephemeris parameters and algorithms of GPS and GLONASS, two major operational satellite navigation systems today have their respective features.
并根据GPS卫星广播星历求取卫星任意历元的位置、速度、加速度以及加速度的变化率，仿真出GPS卫星运行轨道。
Secondly, the GPS satellite circulating orbit is simulated, according to the position, speed, acceleration and the rate action factor of acceleration, given by GPS satellite broadcast star calendar.
导航卫星一般采用近圆轨道，当卫星轨道偏心率或者轨道倾角接近于零时，利用GPS卫星开普勒轨道根数拟合卫星广播星历会出现一些问题。
When their orbit eccentricity or inclination are near zero, some problems may occur when the GPS Kepler orbit elements fitting method is applied to fit their broadcast ephemeris parameters.
导航卫星一般采用近圆轨道，当卫星轨道偏心率或者轨道倾角接近于零时，利用GPS卫星开普勒轨道根数拟合卫星广播星历会出现一些问题。
When their orbit eccentricity or inclination are near zero, some problems may occur when the GPS Kepler orbit elements fitting method is applied to fit their broadcast ephemeris parameters.
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