计算结果表明，使用经各种误差修正后的测速数据参与初轨计算能有效提高定轨精度。
The result shows that using velocity measuring data after error correction in preliminary orbiting computation can effectively improve the orbit determination precision.
实测数据的计算结果表明，新的定轨方法可以实时自主地得出卫星轨道的位置，并能达到较高的定轨精度。
The experiment result with real measurement shows that the new method can be used in real time autonomous satellite orbit determination with high accuracy.
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。
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.
重点考察了月球重力场误差、观测量精度、初始时刻的先验轨道误差以及观测资料类型等对环月飞行器定轨精度的影响。
Especially, the effects of lunar gravity, observation accuracy, orbital error and observation data types on the orbital determination accuracy of the lunar orbiter have been carefully investigated.
利用UKF滤波定轨算法，明显提高了自主定轨的精度。
Based on UKF the precision of autonomous navigation was improved obviously.
本文的主要目的是利用形状记忆合金的特性控制在轨天线的热变形，以此来保证天线的精度在一定的范围之内。
The objective of this article is mostly using characteristic of Shape Memory Alloy (SMA) to control the thermal deformation of antenna at orbit, ensuring the precision of antenna in a certain range.
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, we analyze the key techniques for the service precision of Global Navigation satellite System such as time reference, time synchronization, satellite orbit determination, etc.
低轨重力卫星轨道的精确确定是获得精密地球重力场模型的前提，而精密重力场模型又是获得高精度定轨结果的保证。
On the other hand, the precision gravity model is important guarantees for obtaining high precision orbiting results using the dynamic or reduced-dynamic orbit determination method.
在GPS静态定位和动态定轨中，GPS数据预处理质量的好坏都直接影响着GPS定位精度。
The quality of GPS data pre-processing is the key to improve GPS positioning precision in either GPS static positioning or dynamic POD.
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, we analyze the key techniques for the service precision of Global Navigation satellite System such as time reference, time synchronization, satellite orbit determination, etc.
在这些模型中并没有一种在任何情况下都是最好的，因此，对于特定轨道选择合适的大气密度模型对提高定轨预报的精度是非常重要的。
Therefore, it is very important to choose an appropriate atmospheric density model for a specific orbit to improve the accuracy of orbit forecast.
卫星激光合怍目标技术是卫星激光测距系统的重要组成部分，广泛应用于导弹、人造卫星和月球等激光测距系统中，是实现高精度测距和精密定轨的关键技术。
Laser cooperative targets is an important instrument of satellite laser ranging system, and has been applied widely in laser range system of missiles, man-made satellite and moon, etc.
卫星激光合怍目标技术是卫星激光测距系统的重要组成部分，广泛应用于导弹、人造卫星和月球等激光测距系统中，是实现高精度测距和精密定轨的关键技术。
Laser cooperative targets is an important instrument of satellite laser ranging system, and has been applied widely in laser range system of missiles, man-made satellite and moon, etc.
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