海道测量定位中心的升沉研究

¹大连舰艇学院海测工程系,大连市解放路667号,116018;²92292部队,胶南市,266405;³长江水利委员会长江口水文资源勘测局,上海市浦东大道2412号,200136;⁴92488部队,湛江市,524064

基金项目: 国家自然科学基金资助项目(40671161)

详细信息

Heave of the Positioning Center in Hydrographic Survey

¹Dept.of Hydrography and Cartography Engineering,Dalian Naval Academy,667 Jiefang Road,Dalian 116018,China;²92292 Troops,Jiaonan 266405,China;³The Survey Bureau of the Hydrology and Water Resources of Changjiang Estuary,Changjiang Water Resources Commission,2412 Pudong Road,Shanghai 200136,China;⁴92488 Troops,Zhanjiang 524064,China

Funds: 国家自然科学基金资助项目(40671161)

摘要: 在揭示测量升沉与总升沉存在差异的基础上,建立了GPS定位中心的诱导升沉模型。结合GPSRTK和姿态数据对模型进行了验证,分析了诱导升沉模型的精度和影响因素。数值计算表明,GPS定位中心的诱导升沉可达到dm级的量值,其变化影响着定位中心在垂向位置的归算。相对于横纵摇的测量精度而言,定位中心偏移值的测量精度对诱导升沉和总升沉的精度影响程度更大。
- 海道测量 /
- 测量升沉 /
- 诱导升沉 /
- RTK高程
Abstract: In terms of the vertical position reduction for high-precision positioning in hydrographic survey,the heave factor is studied in this paper.Based on the differences between measured heave and total heave,the induced heave model is proposed.Then,with the RTK height and attitude data,both the accuracy of induced heave estimated by this model and the effect on those are presented.Numerical results indicate that the values of induced heave can achieve the decimeter level,which can influence the instantaneous height of the positioning center.The accuracy of induced heave and total heave can be higher by improving the accuracy of the positioning center offset measured,which is more important than those of roll and pitch measured.
- hydrographic survey /
- measured heave /
- induced heave /
- real time kinematic height