Mobile LiDAR Survey for Roads, State Highways, National Highways, Expressways, and Hill Roads
The engineering survey is the first step to take before starting road design or construction project and is a fundamental operation to ensure the correct positioning of ground features. The planning, designing, estimation, construction of all type of roads are in fact based on topographical measurements and during the execution these works are built along the lines and points established by the survey.
LiDAR Survey is deployed to measure at very high speed the position of millions of points that define the surface of the surrounding objects. The result of the acquisition is commonly called “cloud of points” and constitutes the basis from which to start for the correct three-dimensional representation of the object detected. The information obtained from LiDAR surveys can help professionals in the field in the planning, designing and construction of road projects and are essential to ensure the success of a project. |
Goodland Surveys equipped with Mobile LiDAR, Drone LiDAR, Drone Photogrammetry, DGPS, Total Station and Digital Level for generating the digital models of surveyed works for the following area:
The combination of technologies are used for different type of roads and client's requirement. |
Existing Roads:
We use DGPS, Total Station, Auto Level, Mobile LiDAR for mapping a existing highway. The results shall be accurate 1:20000, 1:40000 HOR and 12√k, 6√k VER. Proposed Roads:
We use DGPS, DGPS-RTK, Drone LiDAR (or) PPK Drone Photogrammetry (or) both for mapping a green field highway. The results shall be accurate 5 ~ 2 Centi-meter. City Roads:
We use DGPS, Total Station, Auto Level, Drone LiDAR (or) photogrammetry drone (or) both for mapping a green field highway. The results shall be accurate 1:20000, 1:40000 HOR and 12√k, 6√k VER. |
Deliverable
A LiDAR survey for a highway can provide various deliverables that are essential for infrastructure planning, design, and management. The specific deliverables may vary based on project requirements, but common outputs include:
LiDAR Point Cloud Data: Raw point cloud data captured by the LiDAR system, providing a detailed three-dimensional representation of the surveyed area. Digital Elevation Model (DEM): A high-resolution DEM, representing the bare earth surface, is generated from the LiDAR data. This is crucial for understanding the topography of the highway corridor. Digital Surface Model (DSM): A DSM includes both natural features (such as trees and buildings) and the ground surface. It provides a comprehensive view of the terrain and surface characteristics. CAD Line works and Points Three-dimensional drawings as dgn/dwg of the surveyed area, aiding in better comprehension and communication of the project's topographical features. Contour Maps: Contour maps derived from LiDAR data help illustrate changes in elevation and gradient, supporting design and engineering decisions. Cross-Sections: Cross-sectional profiles of the highway corridor provide detailed information about the terrain and are crucial for road design and construction planning. Vegetation Analysis: LiDAR data can be processed to identify and analyze vegetation, which is important for assessing potential obstructions and ensuring road safety. Power Line and Utility Detection: LiDAR can assist in detecting power lines and other utility features, helping to avoid conflicts during construction or maintenance activities. Geospatial Information System (GIS) Integration: Integration with GIS platforms allows for the incorporation of LiDAR data into broader geospatial analyses and decision-making processes. Road Asset Inventory: Identification and classification of road assets, such as signs, markings, and other features, contributing to comprehensive asset management. Corridor Modeling: Three-dimensional modeling of the highway corridor, which aids in design, alignment, and construction planning. Data Reports and Documentation: Detailed reports documenting survey parameters, methodologies, List of Control Points, Traverse and Fly Level abstracts and results, providing a comprehensive overview of the LiDAR survey. These deliverables collectively contribute to informed decision-making, accurate design, and efficient construction processes for highway projects. The choice of deliverables depends on project goals, budget, and specific requirements. |