Shulou(Shulou.com)11/24 Report--

Thanks to CTOnews.com netizens, assassins for their clues delivery! CTOnews.com, November 19, according to Xinhua News Agency, after four years of research and development, the "Applied Technology Research in Railway and Shipping Field based on Beidou Navigation system" led by the fourth Institute of China Railway Construction (China Railway fourth Survey and Design Institute) has been successfully completed. This study solves the problem that China's railway survey is completely dependent on GPS, and can realize the complete replacement of Beidou system, which is a breakthrough and innovation in exploring "China plan" in the field of transportation in our country.

With the rapid development of high-speed railway in China, due to the large span of high-speed railway lines and the complex geological environment involved, technicians need to establish a large-scale and high-precision control network and accurately measure the railway track in the process of construction, operation and maintenance. For a long time, GPS navigation and positioning technology is still the main navigation and positioning technology in various fields of railway engineering, such as survey and design, construction, operation, deformation monitoring and so on. there are some problems such as no signal coverage and inaccuracy in underground space.

According to reports, the main advantage of engineering survey based on Beidou navigation system lies in the autonomous controllability of satellite navigation. CTOnews.com learned that Beidou navigation technology can achieve high-precision positioning through ground-based enhancement, and its application is more extensive than the original traditional satellite navigation.

The application of Beidou system will also further promote the transformation of China's railway survey to intelligent direction. In recent years, with the popularity of new surveying and mapping technologies, such as airborne radar, unmanned ship, tilt photography, UAV and so on, China's railway survey has gradually changed the problems of single traditional survey technology, low measurement efficiency, difficult quality control, low data processing efficiency and so on.

According to reports, in previous railway engineering surveys, 500 kilometers of roads were divided into five sections, with an average of at least 50 surveyors per section, and it took about three months to complete the survey. It is estimated that through intelligent survey, the number of field surveyors can be reduced by about 40% in the initial stage, and the construction period can be shortened by about 30%. Intelligent survey is a major innovation in the railway survey industry, which will promote the technological progress and intelligent transformation of China's railway industry, and improve the competitiveness of core technology.

According to China's Beidou satellite navigation system, in December 2021, the State Railway Administration issued the 14th five-year Plan for Railway Standardization Development (hereinafter referred to as "the Plan"). The "Plan" said that through the revision of the standard system and standardization research work in a series of key areas, and the formulation of standards in many aspects of Beidou railway application, etc., to promote high-quality railway development and support the construction of a transportation power. The "Plan" points out that with regard to the revision of the standard system in key areas, it will study the communication signal standards based on the relevant monitoring system of Beidou, the new generation railway mobile communication system, and the security of railway communication network, and study the application standards of new technologies in engineering construction survey, such as Beidou and airborne lidar. In the basic research of railway standardization, the tasks of technology research and development and standard development are deployed in the fields with broad application prospects, such as Beidou, 5G, artificial intelligence and so on, to promote the breakthrough of key core technologies of railway standards.

Beijing-Zhang high-speed railway is the first intelligent high-speed railway in China that uses Beidou for the first time and has a design speed of 350 km / h. The builders have incorporated the wisdom of Beidou into the construction of the Beijing-Zhang high-speed railway. Based on the technology of Beidou and GIS, the Beijing-Zhang high-speed railway has realized intellectualization in the whole process of construction, operation, dispatching, maintenance and emergency. Whether the parts are aging or not, whether the roadbed is sinking or not, whether the lighting is damaged or not can be seen at a glance.

During the construction of Chengdu-Kunming Railway, the intelligent rail laying unit makes full use of the cutting-edge technology such as Beidou high-precision positioning technology, and solves the problems in the construction process, such as the accuracy of track-laying unit is affected by working conditions, manual and other interference factors, and the relative positioning accuracy is not high.

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