The application of Bi-satellite positioning system to LEO or MEO satellite orbit determination be analyzed and discussed some corresponding orbit determination methods.
对双星定位系统在中低轨卫星轨道确定中的应用做了详细的分析，给出了在该系统的测量模式下中低轨卫星定轨的几种方法。
Based on the research of orbit determination by using two GPS satellites, this paper discusses the initial value problem and provides an effective method of getting initial value.
研究了用两颗全球定位系统(GPS)卫星粗略确定低轨卫星轨道的问题，并着重讨论了其中的初值问题，给出了一种有效的初值方法。
Based on research of GAMIT software, the GPS orbit determination method were studied and discussed. This paper gives a valuable strategy for regional orbit determination in China.
本文基于美国Gamit软件研究的基础上，对于GPS实时精密轨道确定的方法进行了细致的研究，提出了在中国区域范围内有实用价值的区域定轨方法与方案。
The result is satisfactory by using a method of the artificial earth satellite orbit determination from range rate observations to fit the free-flight trajectory of rocket.
用人造地球卫星轨道计算的测速定轨方法，去拟合火箭飞行弹道的自由段，取得了比较满意的结果。
The observational accuracy of the space debris will affect their orbit determination accuracy, so it is especially vital for us to determinate the observational accuracy of the space debris.
空间碎片的观测精度将会直接影响到空间碎片的定轨精度，因此对空间碎片观测精度进行判定是有重要意义的。
In this paper, we analyze the key techniques for the service precision of Global Navigation satellite System such as time reference, time synchronization, satellite orbit determination, etc.
对影响导航定位系统定位精度的各种因素进行了分析。研究了影响导航定位精度的关键技术问题，如时间基准、时间同步和卫星定轨等。
In this paper, the robust variance component estimation is introduced into the satellite orbit determination to resist the effects of outlying observations and to determine the weights.
针对卫星精密定轨过程中观测资料存在粗差以及观测资料的合理定权问题，将抗差方差分量估计引入到卫星精密定轨中。
This paper studies the orbit determination of LEO satellites using GPS receivers of single frequency in condition of not depending on GPS differential reference stations.
研究在不依赖于GPS差分基准站的情况下，利用单频gps接收机对低轨卫星进行定轨的算法。
In this paper, we analyze the key techniques for the service precision of Global Navigation satellite System such as time reference, time synchronization, satellite orbit determination, etc.
研究了影响导航定位精度的关键技术问题，如时间基准、时间同步和卫星定轨等。
The new version of J77 is found to be obviously advantageous to the precision orbit determination of ERS-1, which is at the height of 800km, compared with other atmospheric models.
并将其应用于高度为800公里ERS-1 卫星的轨道计算，结果表明：修订后的J77模型比其它大气模型在测轨精度上有明显改善。
This paper proposes an accurate orbit determination technique to accurately determine orbit elements of a spacecraft equipped with a GPS receiver according to navigation messages from the receiver.
利用GPS接收机的导航信息精确确定接收机载体航天器的轨道根数。
In the free flight segment, effects on the state error propagation caused by prior state estimation errors and orbit determination errors of the chasing spacecraft were studied.
在自由飞行段，分析了追踪航天器估计状态误差的先验值和测轨误差对状态误差传播的影响。
High precise real-time autonomous relative orbit determination between distributed spacecraft is a key technology in the task of spacecraft formation maintenance.
分布式航天器间相对位置的实时高精度测量是分布式航天器实现空间队形保持的关键技术之一。
Based on the target's phasing time analysis of orbit determination error, orbit control error and orbit prediction error, the strategy of the target's phasing orbit maneuver was developed.
基于定轨误差、轨道控制误差和轨道预报误差的调相时间分析，制定了目标飞行器调相控制策略。
Based on the target's phasing time analysis of orbit determination error, orbit control error and orbit prediction error, the strategy of the target's phasing orbit maneuver was developed.
基于定轨误差、轨道控制误差和轨道预报误差的调相时间分析，制定了目标飞行器调相控制策略。
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