4.1 LiDAR Maping
LIDAR mapping is a unique remote sensing technology that has taken the surveying industry by storm. The acronym “LIDAR” stands for Light Detection and Ranging and describes how the technology uses light in the form of lasers to measure distances. Take- Off Professionals’ data specialists can compile the data collected by a LIDAR system and use it to create exceptionally precise three-dimensional information about a specific area
and its characteristics. LIDAR is an ideal system for a variety of industries, including the civil engineering, roadwork and mining industries.
A LIDAR instrument consists of a laser, a scanner and a GPS receiver mounted on a platform. This platform may be mobile or stationary, aerial or terrestrial, based on the needs of the application — the laser, scanner and GPS receiver are the only constants.
There are two types of LIDAR — topographic and bathymetric. These are explained in more detail below:
Topographic: Topographic LIDAR measures distances on land using a near-infrared laser. This is essential for the majority of civil engineering, roadwork and mining operations, which require measuring distances on land.
Bathymetric: Bathymetric LIDAR measures distances in aquatic environments by using a water-penetrating green light laser. This type of LIDAR is commonly used in civil engineering and roadwork applications that require working with underwater environments, such as under bridges.
LIDAR is a highly advantageous survey system for a range of industries, primarily due to the following factors:
Speed: LIDAR can collect a million points of data per second, making it an exceptionally fast method of surveying. Scans of building interiors can last an average of three minutes, but even large-scale surveys can take under an hour to complete, making LIDAR one of the fastest surveying methods available.
Accuracy: LIDAR systems collect extremely dense data with very little room between points. This means that the results are highly accurate, allowing professionals to plot and model natural and man-made geographies with the level of precision they need to plan detailed projects.
Flexibility: When it comes to surveying land with LIDAR, there are plenty of options to choose from. LIDAR systems can be mounted on a variety of platforms based on the needs of an application. For small-scale surveying, a stationary tripod may suffice. LIDAR systems could also be mounted to airplanes, helicopters or drones to survey larger areas. LIDAR data can even be collected at any time of day or night since it uses light as the measurement tool.
Safety: LIDAR systems work relatively quickly and can be operated from a distance, making them a good choice for locations that may be unsafe for human operators to stay for extended periods of time. Their ability to be mounted to aerial crafts also allows them to be used to survey dangerous areas that human surveyors may not normally be able to access.
In addition to these advantages, LIDAR can be integrated with other data sources with relative ease. The key to effectively using LIDAR data, however, is working with a quality data processing company like Take-Off Professionals who can effectively use that data to deliver high-quality 3D models.
The use of LIDAR in civil engineering and surveying is extensive. LIDAR applications in civil engineering and surveying include, but are not limited to, the following:
Design: Civil engineering companies prefer LIDAR technology for its ability to offer extremely accurate results within a short time, which is essential for planning projects around terrestrial limitations.
Evaluation: Civil engineers often use LIDAR to inspect existing buildings and construction products for defects and changes. Comparing the data to previous data can identify changes in structure that would otherwise be difficult to find.
Surveying: Surveyors prefer LIDAR to help them create detailed 3D images, including the landscape and any vegetation or existing structures.
If your Organization uses or is interested in using LIDAR technology, you need a data industry leader to help compile your data and deliver fast and accurate results. Take-Off Professionals can help.
Take-off Professionals is a data industry leader, preparing 3D models and performing quantity takeoff services for a range of industries. We have extensive experience working with LIDAR technology and understand how LIDAR mapping works and how to use it. We are experienced at taking the data collected through LIDAR methods and compiling it into comprehensive, actionable models that companies in the civil engineering, roadwork and mining industries can use. We can help with any type of project from commercial construction to roadwork and mining operations.
Regardless of the system you use, Take-Off Professionals can work with you. We’ve worked with Carlson, Leica, Topcon, Trimble and more and provided our models in a range of final formats to meet the needs of our clients. This makes us an ideal choice for multi-brand fleets. For over two decades, Take-Off Professionals has provided 3D models for construction companies and related industry professionals, producing about 1,000 machine control models a year. During that time, we’ve maintained a reputation for accuracy, timeliness and attention to detail that speaks for itself. Our knowledge and experience combined with the most advanced and innovative technology in the industry make us the ideal choice for your 3D machine control modeling needs.