Brief Discussion on the Establishment of Railway Construction Engineering Method System

Wang, Mengjun; Qian, Yingmiao; Yuan, Ruijia

doi:10.3724/sp.j.1224.2018.00563

Cited by 1 publication

(1 citation statement)

References 2 publications

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“…The key of linear engineering coordinate system construction is the correction of map projection distortion. In the design of the line project, when the length distortion value is not greater than 2.5cm/km, the national uniform Gaussian plane rectangular coordinate system with 6° or 3° can be directly adopted [7]. However, 3D models in most linear 3D scenes have the characteristics of wide distribution range and large line span.…”

Section: Calculation and Analysis Of Linear Engineering Projection Di...mentioning

confidence: 99%

Research on 3D model and terrain matching method based on the segment of linear coordinates

Yang

Huang²,

Shen³

et al. 2023

Fourth International Conference on Geoscience and Remote Sensing Mapping (GRSM 2022)

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At present, when the ultra -long linear 3D model is loaded in the 3D scene, it is difficult to adapt the ultra -long line model to the terrain model due to the influence of projection distortion. At present, some solutions mainly focus on the model rendering level, without considering the necessity of linear engineering construction, which is hard to encounter the requirements of 3D visualization in the meadow of linear engineering management. Therefore, this paper conducts research from two aspects of projection distortion calculation and analysis, linear engineering independent coordinate system establishment and so on, and puts forward the method of line model loading based on linear independen t coordinate system piecewise technology. Firstly, the linear engineering projection distortion is calculated and analyzed. Then, based on the requirements of linear engineering construction accuracy, multiple independent coordinate systems that meet the a ccuracy requirements are constructed according to the characteristics of linear engineering. Finally, the 3D model of the ultra -long line is piecewise loaded, and the influence caused by the distortion of the projection length is apportioned through each independent coordinate system. The practical consequence indicate that this method can virtually optimize the difficult problem of model and terrain acclimatization caused by projection distortion, and meet the rendering requirements of linear engineering 3D models.

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Section: Calculation and Analysis Of Linear Engineering Projection Di...mentioning

confidence: 99%

Research on 3D model and terrain matching method based on the segment of linear coordinates

Yang

Huang²,

Shen³

et al. 2023

Fourth International Conference on Geoscience and Remote Sensing Mapping (GRSM 2022)

View full text Add to dashboard Cite

show abstract

Brief Discussion on the Establishment of Railway Construction Engineering Method System

Cited by 1 publication

References 2 publications

Research on 3D model and terrain matching method based on the segment of linear coordinates

Research on 3D model and terrain matching method based on the segment of linear coordinates

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