Study and Application of the Digital Photogrammetry Techniques in Surface Construction of Oil-gas Field
|Course||Surveying and Mapping Engineering|
|Keywords||Digital photogrammetry Survey and Design GPS 4D product|
With the development of the aviation, aerospace technology and computer digital image processing technology, photogrammetry equipment costs a significant reduction in digital photogrammetry has become the primary means large-scale, large area measurement, after the processing of the data can provide a wealth of geospatial information data. Currently, the technology has been widely used in various sectors of the national economy, and plays an important role in the construction and development of the national economy. With the rise of the \However, digital photogrammetry technology is only in some large and key projects in the application, the application mode, just replace the simple application of the traditional means of measurement, its rich three-dimensional geographic information and image information is not fully utilized, the diverse digital products simply replace the traditional measurement drawings, digital photogrammetry technology potential there is no good way to explore, did not form a complete set of technical system. This paper, for the survey and design characteristics and needs of the oil industry, to study digital photogrammetry technology as the main field survey, mapping and design integration within the industry integration technology to solve the survey and design of the construction of the oil industry ground to be solved the key technologies, support for the formation of a technical survey and design for the oil industry. Pipeline survey and design, aerial and satellite remote sensing image data based on three-dimensional rendering technique the line primaries and optimization more intuitive, can improve the quality and efficiency of the line selection of the selected line. Digital image interpretation, you can obtain the preliminary geological conditions along the information, such as the regional geological fault zone, hydrogeology, lithology distribution and adverse geological conditions, greatly reducing the field workload. In line GPS control network accuracy, line engineering GPS elevation fitting - Lagrange interpolation fitting method and GPS technology like control measurements. Wild digitized collection, aerial photography and remote sensing for the majority of the survey measurement data acquisition based on data production software system for the design of oil and gas pipeline route survey and design integration. Geospatial data pipeline automatic extraction of spatial information in large-scale circuit design system to provide basic information data of the three-dimensional terrain. The line midline achievements, cross section data is automatically extracted automatically mark the corners and Stake in digital products. The construction drawings drawing orthophoto plan, DEM, DLG are layered with the profile view, the drawing information rich and intuitive, designers can synchronize profile, and graphic design, more convenient for the construction and management. 3S technology, the use of the the 4D products produced with a realistic, informative, achievements and diversity, you can create and generate a multi-purpose digital survey mapping data and products, but also to lay a solid spatial data infrastructure for the digital pipeline.