基于精密单点定位技术的航空测量应用实践

基金项目: 国家自然科学基金资助项目(40471089)

详细信息

Application of Precise Point Positioning in Airborne Survey

¹ School of Geodesy and Geomatics,Wuhan University,129 Luoyu Road,Wuhan 430079,China;² Presidential Secretariate,Wuhan University,Luojia Hill,Wuhan 430072,China;³ Danish National Space Center,Juliane Mariesvej 30,DK-2100 Copenhagen,Denmark

Funds: 国家自然科学基金资助项目(40471089)

摘要: 讨论了基于精密单点定位技术来实现无地面基准站的航空测量。计算结果表明,用观测值的验后残差计算得到的实测动态及静态模拟动态进行精密单点定位的三维RMS均优于3 cm;用动态数据精密单点定位的结果同多基准站的双差解求较差计算出的RMS,南北分量和东西分量均优于5 cm,高程分量优于10cm;用基准站的静态数据模拟动态单点定位解算得到的坐标同已知坐标求较差计算出的RMS,南北分量和东西分量均优于3 cm,高程分量优于5 cm。
- 精密动态单点定位 /
- 无地面控制点 /
- 航空测量
Abstract: Applying precise point positioning(PPP) technology to airborne survey without ground base station was implemented in this paper.The results show that cm to dm accuracy could be achieved.Epoch-by-epoch 3D RMS calculated from postfit residuals of observations in both kinematic and static case is smaller that 3 cm.The external RMS calculated from epoch-by-epoch differences between the PPP solution and double-differenced solution with kinematic data shows that horizontal RMS is smaller than 5 cm,vertical RMS is better than 10 cm.Making differences epoch by epoch between PPP simulated kinematic solution and known coordinate of static base station derives RMS shows that horizontal RMS is smaller than 3 cm,vertical RMS is better than 5 cm.
- kinematic precise point positioning /
- no ground base station /
- airborne survey