一种快速检核水运工程控制点高程的方法

A method to quickly check elevation of control point for port and waterway engineering

针对控制点高程检核效率低的问题,对北斗地基增强系统和高分辨率EGM2008重力场模型(1′×1′)的原理和数据处理方法进行研究,通过融合这两种技术,提出一种快速获取待定点高程的具体流程和操作方法,并通过工程实例验证。结果表明,本方法获取的高程外符合精度均小于5 cm;可以有效鉴别已有成果的可用性,并判别其高程系统的类型;该方法不仅准确可靠、便捷高效,而且可以降低生产成本,对类似工程具有参考价值。

To address the low efficiency in checking the elevation of the control point,this paper studies the principles and data processing methods of the Beidou ground-based augmentation system and the high-resolution EGM2008 gravity field model(1′ × 1′).By integrating the above two technologies,this paper puts forward a specific process and an operation method for quickly obtaining the elevation of the point to be determined and verifies the method through engineering examples.The results show that the error is less than 5 cm regarding the external coincidence accuracy obtained by this method.It can effectively identify the availability of existing results and distinguish the type of an elevation system.The results of the proposed method are accurate and reliable,and the operation is convenient and efficient.In addition,the method can reduce the costs,which has a reference value for similar port and waterway engineering.