Multilevel-control-network GPS (global positioning system) optimization measurement method
A technology of control network and measurement method, which is applied to measurement instruments, roads, tracks, etc., can solve the problems of high cost, waste of time, low work efficiency, etc., to save time and cost, improve work efficiency, and reduce the workload of GPS observation. Effect
Active Publication Date: 2015-05-13
山西天昇测绘检测工程有限公司
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Problems solved by technology
[0010] In order to solve the problems of low work efficiency, high cost and waste of time during multi-level control network measurement, the present invention provides a brand-new, high-efficiency, multi-level control network GPS optimization combination measurement method that fully complies with GPS measurement principles and specification requirements
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[0038] Embodiment: Taking the high-speed railway control network as an example, according to the "High-speed Railway Engineering Measurement Specification" (TB 10601-2009), the high-speed railway precision control network is divided into 4 levels: CP0, CPI, CPII, and CPIII, among which: CP0 control One pile is set every 50km; one pair of CPI control piles is set every 4km, and one can be set when CPII adopts GPS measurement method; one CPII control pile is set every 600-800m.
[0039] On the basis of the CPII control network, a construction encryption control network can be established, and one point spacing is set between 200-300m.
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The invention belongs to the technical field of engineering control network measurement, and in particular relates to a multilevel-control-network GPS (global positioning system) optimization measurement method, which aims to solve the problems of low time and work efficiency, high cost, waste of time and the like in multilevel control network measurement. The multilevel-control-network GPS optimization measurement method is characterized in that the first level of control network in a measurement region is divided into a plurality of basic regions; no less than 3N+1 GPS receivers are configured, wherein N refers to the level number of control networks, and a measurement mode of 'two ends firstly, and middle last' is formed according to a principle of 'measurement data utilization maximization'. The multilevel-control-network GPS optimization measurement method provided by the invention has the advantages that the utilization ratio of high-level control network GPS observation data is improved, the workload of low-level control network GPS observation is reduced, and 'multi-network multiplexing with measurement once' is implemented, so that the working efficiency is improved greatly, and time and cost are saved.
Description
technical field [0001] The invention belongs to the technical field of engineering control network measurement, and in particular relates to a multi-level control network GPS optimization combination measurement method, which is especially suitable for the measurement of belt-shaped plane control networks such as high-speed railways, passenger dedicated lines, newly-built railways, and expressways. Background technique [0002] The control network serving the project construction is "layouted hierarchically and controlled step by step" in accordance with the principle of "from the whole to the part, control first and then fragments". [0003] In expressway engineering, the planar control network is divided into four levels: first, second, third, and fourth. GPS measurement can be used for all four levels. Among them, the control network of large-scale bridges and tunnels should use one or two The second-level accuracy level, the third-level control network can be used as...
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IPC IPC(8): E01B35/00
Inventor 郭志广王波孙学军黄尧苏杰杜贺
Owner 山西天昇测绘检测工程有限公司