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中文摘要：
介绍了利用星间距离观测值和由预报星历提供的先验信息采用最小二乘配置法进行导航卫星自主定轨的方法、模型及软件;采用自编软件进行了一系列的模拟计算,分别探讨了观测值随机噪声、残余系统误差和先验信息的好坏对自主定轨精度的影响。结果表明,随机噪声对自主定轨精度的影响不明显,而系统误差和先验信息的影响则较为重要,值得关注。
英文摘要：
Method,model and software of AOD（autonomous orbit determination） of navigation satellites by using least square collocation method has been introduced in this paper based on cross-link ranging observations and the prior information provided by forecasting ephemeris.Series of simulations through self-developed software has discussed the influence of measurement noise,residual systematic error of observations and the quality of prior information to precision of AOD.Results indicated that measurement noise contributes less obvious influence on AOD precision,while effects of residual systematic error and the prior information are more distinct,which need to be considered seriously in practical application.
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