秦建, 郭金运, 孔巧丽, 李国伟. Jason-2卫星星载GPS数据cm级精密定轨[J]. 武汉大学学报 ( 信息科学版), 2014, 39(2): 137-141. DOI: 10.13203/j.whugis20120686
引用本文: 秦建, 郭金运, 孔巧丽, 李国伟. Jason-2卫星星载GPS数据cm级精密定轨[J]. 武汉大学学报 ( 信息科学版), 2014, 39(2): 137-141. DOI: 10.13203/j.whugis20120686
QIN Jian, GUO Jinyun, KONG Qiaoli, LI Guowei. Precise Orbit Determination of Jason-2with Precision of CentimetersBased on Satellite-borne GPS Technique[J]. Geomatics and Information Science of Wuhan University, 2014, 39(2): 137-141. DOI: 10.13203/j.whugis20120686
Citation: QIN Jian, GUO Jinyun, KONG Qiaoli, LI Guowei. Precise Orbit Determination of Jason-2with Precision of CentimetersBased on Satellite-borne GPS Technique[J]. Geomatics and Information Science of Wuhan University, 2014, 39(2): 137-141. DOI: 10.13203/j.whugis20120686

Jason-2卫星星载GPS数据cm级精密定轨

Precise Orbit Determination of Jason-2with Precision of CentimetersBased on Satellite-borne GPS Technique

  • 摘要: 目的 Jason-2卫星为测高卫星,需要cm 级的轨道精度。利用Jason-2星载 GPS数据,采用简化动力学法进行了Jason-2卫星精密定轨。对简化动力学轨道进行重叠轨道对比,径向精度达到1.19cm;与 CLASS提供的POE结果对比,径向精度达到5.54cm;与SLR数据进行对比,整体精度达到6.63cm。因此,简化动力学轨道达到了cm 级要求,定轨精度良好。

     

    Abstract: Objective The Jason-2satellite is an altimeter satellite,which means orbit precision must reach cmlevel.Jason-2’s precise orbit is determined from Jason-2’s satellite-borne GPS data using the zero-difference reduced-dynamic method,introduced for the processing of precise orbit determination,itanalyzes the precision of orbit determination.An experiment for precise orbit determination is donewith actual data to compare the overlap orbits from the reduced-dynamic method,the radial accuracyreaches 1.19cm,and result compares with POE provided by CLASS,and analyse the difference inRTN.The study shows that the radial accuracy reaches 5.54cm.Comparing with SLR data,the studyshows that overall accuracy reaches 6.63cm.In general,the accuracy of the computed orbit is at centi-meter level.,and it reaches the required standard.

     

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