On The Establishment Of High-precision Orbit Absolute Geometric Reference System

The first condition of High-speed train work safely and comfortably is the high smoothness of railway, the high smoothness of railway depends on the railway construction and maintenance in the process of high-quality, and access to high-quality track is based on the linear geometry of precision measurement technology, Therefore, the establishment of high-precision railway absolute geometric reference system of the High-Speed Railway Ballast Track Structure is not only the needs of the construction, maintenance line in the future is the work of the foundation and guarantee.This thesis analyses the feasibility of the establishment of high-precision railway absolute geometric reference system. Combined with the latest research study at home and abroad, we study the establishment of the system of measurement accuracy standards, the standards laid using standard equipment and the problem of the technology on connecting effective conservation, and other technical problems; system has grown in line curve conservation to address the line Irregularity in particular the long-wave irregularity to carry out the important role of verification, leading to decision-making based on detailed in order to work out a set of operational guidance on-site production of the operating system.The establishment of high-precision railway absolute geometric reference system is advanced and innovative, also it has highly applying valuable. It is fit to guide 200 to 250 km per hour the High-Speed Railway Ballast Track Structure's maintenance, repair, construction. It is conveniently operated and implemented, it has a high economic and social benefits.