从观测资料确定天体轨道的过程。
区域监测网两步法精密定轨与轨道预报-论文 关键词：区域网；定轨；轨道预报；太阳辐射压；用户距离精度 [gap=2291]Keywords: regional tracking network; orbit determination; orbit prediction; SRP; URE
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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.
光电人卫跟踪仪的观测数据是对已知或未知轨道卫星进行定轨的重要参数。
The tracker's observed data are important parameters to determine the precise orbits of those orbit-known or unknown satellites.
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.
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