摘要
在高速铁路的建设中,精密工程测量至关重要。而高速铁路测量的核心技术之一—高精度的CPIII平面网测量,由于控制点地理位置的限制,采用常规控制测量方法难以建立。因此,需要研究不在控制点上设站仍然可以建立高精度CPⅢ平面网的方法,而自由测站法能够很好地满足建网要求。介绍利用自由测站法进行CPIII平面网的建立原理、平差计算和精度评定等,通过对自由测站法的研究及高速铁路工程案例的分析,得出运用自由测站法能够建立高精度的CPⅢ平面网的结论。
In the high-speed railway construction,precision engineering survey is essential.However,due to the control point location restrictions,traditional surveying methods are difficult to establish a highprecision CPⅢ network,which is one of the core high-speed railway surveying technologies.Therefore,it needs to establish a high-precision CPⅢ network not located on the control point.While free station method can well meet the accuracy requirement.Tree station method is used on extablishing the CPⅢ network principle,adjustment calculation and accuracy assessment.Through the case analysis of the highspeed railway engineering,conclusion is made that the use of free station method is able to establish a high-precision CPⅢ network.
出处
《测绘工程》
CSCD
2013年第6期81-85,共5页
Engineering of Surveying and Mapping
