星站差分定位在区域重力调查中的应用探究

pplication of Satellite-Based Differential Positioning in Regional Gravity Surveys

在我国西部沙漠和高山地区开展区域重力调查工作时,由于国家控制点较为稀缺,甚至一些地方缺乏控制点。在这个复杂环境下,传统的测量技术往往难以解决重力点定位的问题。而引入星站差分定位这一新技术可成功地克服这一困境。通过详细介绍星站差分定位的基本原理,并结合野外项目实例对比试验数据的精度,该文展示该技术可在平面和高程方向上的测量精度,分别为±0.504 m和±0.156 m。这些结果不仅满足1∶250000区域重力调查规范的精度要求,还验证星站差分定位在精度和定位准确性方面的卓越性,以及提高野外工作效率的显著优势。综合分析近年来的野外实测数据,该研究总结星站差分定位在区域重力调查中的优点和缺点,并为今后在该领域采用星站差分定位提供有益的参考,有望在未来的区域地质研究中发挥关键作用。

When the regional gravity survey is carried out in the desert and alpine areas of western China,due to the scarcity of national control points,some areas even lack control points.In this complex environment,the traditional measurement technology is often difficult to solve the problem of gravity point location.The introduction of the new technology of satellite-based differential positioning has successfully overcome this dilemma.By introducing the basic principle of satellite station differential positioning in detail,and comparing the accuracy of test data with field projects,this paper shows the measurement accuracy of this technique in plane and elevation direction,which is±0.504 meters and±0.156 meters respectively.These results not only meet the accuracy requirements of the 1∶250000 regional gravity survey specification,but also verify the excellence of satellite station differential positioning in accuracy and positioning accuracy,as well as the significant advantages of improving field work efficiency.Based on the comprehensive analysis of the field measured data in recent years,this study summarizes the advantages and disadvantages of satellite station differential positioning in regional gravity survey,and provides a useful reference for the application of satellite station differential positioning in this field in the future.It is expected to play a key role in regional geological research in the future.