长庆油田似大地水准面精化软件应用探析

Application of quasi-geoid refinement software in Changqing oilfield

为了验证长庆油田似大地水准面精化软件在场站高程控制测量方面的精度和可行性,本文研究了长庆油田似大地水准面精化软件在控制测量中的应用效果。首先,采用最小二乘配置法进行拟合,根据残差进行粗差探测与剔除;其次,采用移动拟合方法计算,建立高精度、高分辨率似大地水准面模型,并根据模型构建的原理进行编程,编译形成长庆油田似大地水准面精化软件;最后,结合某处理厂高程控制测量实际案例,把大地高直接输入精化软件计算出正常高,对计算结果进行精度分析。研究结果表明,采用长庆油田似大地水准面精化软件输出成果能代替低等级水准测量,可为站场高程控制测量提供新方案。

To verify the accuracy and feasibility of the Changqing oilfield quasi-geoid refinement software in field station vertical control survey,this paper studies the application effect of Changqing oilfield quasi-geoid refinement software in control survey.Firstly,the least square collocation method is used for fitting,and the gross error is detected and eliminated according to the residual error.Secondly,the moving fitting method is used to establish a high-precision and high-resolution quasi-geoid model,and the quasi-geoid refinement software of Changqing oilfield is compiled according to the model establishment principle.Finally,combined with the actual case of vertical control survey in a treatment plant,the earth height is directly input into the refinement software to calculate the normal height,the accuracy of the calculation results is analyzed.Research has shown that using the Changqing oilfield quasi-geoid refinement software to output results can replace low-level leveling measurements,providing a new solution for station vertical control survey.