Laserkanning

Laserkanning, also known as laser scanning or LiDAR (Light Detection and Ranging), is a remote sensing method that uses laser light to measure distances to the Earth's surface. A laser scanner emits pulses of laser light and measures the time it takes for the light to return after reflecting off an object. This time-of-flight measurement, combined with the known speed of light, allows for precise distance determination.

The data collected by laser scanners is typically in the form of a point cloud, which is a collection of millions or even billions of individual points, each with precise three-dimensional coordinates (X, Y, Z). These point clouds can be used to create highly accurate 3D models of buildings, landscapes, infrastructure, and other objects. The technology can also capture intensity data, which indicates how strongly the laser pulse reflected off the surface, providing additional information about material properties.

Applications of laserkanning are widespread. It is extensively used in surveying and mapping for creating topographic maps and digital elevation models. In architecture, engineering, and construction (AEC), it aids in building information modeling (BIM), as-built documentation, and construction progress monitoring. Environmental sciences utilize it for forest inventory, coastal monitoring, and landslide analysis. Furthermore, laserkanning plays a role in archaeology for uncovering hidden structures and in urban planning for detailed city modeling. The rapid advancement of sensor technology and processing software continues to expand the capabilities and applications of this powerful surveying technique.