宇航学报

宇航学报 ›› 2011, Vol. 32 ›› Issue (4): 767-774.doi: 10.3873/j.issn.1000-1328.2011.04.010

• 制导、导航与控制 • 上一篇    下一篇

月球探测器LP精密定轨及月球重力场模型解算

鄢建国1,2, 李斐1, 平劲松2   

  1. 1.  武汉大学测绘遥感信息工程国家重点实验室，武汉  430079； 2. 中国科学院上海天文台，上海  200030
  • 收稿日期:2010-01-18 修回日期:2010-12-08 出版日期:2011-04-15 发布日期:2011-04-26
  • 基金资助:
    国家自然科学基金（40904006）

Precision Orbit Determination of Lunar Spacecraft LP and Lunar Gravity Field Model Solution

YAN Jian-guo1,2, LI Fei1, PING Jin-song2   

  1. 1. State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China; 2. Shanghai Astronomical Observatory, Chinese Academy of Science, Shanghai 200030,Chian
  • Received:2010-01-18 Revised:2010-12-08 Online:2011-04-15 Published:2011-04-26

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摘要： 对美国1998年发射的月球探测器LP任务阶段共19个月的双程测距测速轨道跟踪数据进行了精密定轨，对定轨结果通过轨道残差及重复弧段差异进行了精度评价。利用LP正常任务阶段三个月的轨道跟踪数据进行了月球重力场模型解算，通过重力场功率谱、轨道残差和月球自由空气重力异常对解算模型进行了精度评价。结果表明精密定轨及月球重力场模型解算合理。对进一步融合嫦娥一号轨道跟踪数据和LP数据解算自主的高精度月球重力场模型具有参考意义。
　

关键词: LP, 精密定轨, 月球重力场, 精度, 嫦娥一号

Abstract: Two\|way range and Doppler data in 19 months are used for precision orbit determination of lunar exploration mission LP. The orbit determination accuracy is assessed by orbit residuals and orbit overlap differences. The lunar gravity field model is solved based on 3 months tracking data of LP during nominal phase, and the model accuracy is evaluated by gravity field power spectrum, orbit residuals and lunar free\|air gravity anomaly. Results show the reasonability of precision orbit determination and lunar gravity field solution. The work would provide a reference for independent high accuracy lunar gravity field model solution by combining orbit track data of Chang’E-1 and LP.

Key words: LP, Precision orbit determination, Lunar Gravity field model, Accuracy, ChanG’E-1

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