Terrestrial LiDAR uses a fixed scanner mounted on a tripod to capture high-precision 3D data from a stationary position.
How it works
The scanner emits laser pulses in all directions
Measures distance based on return time (Time-of-Flight)
Captures millions of points → forms a point cloud
Multiple scans from different positions are later stitched together (registration)
Key Features
Extremely high accuracy (±1–3 mm)
Dense point clouds
Requires setup at multiple positions
Slower data collection
Common Use Cases
Architecture & heritage documentation
Construction site monitoring
Industrial plants
Surveying and mapping
SLAM LiDAR (Mobile Scanning)
SLAM stands for Simultaneous Localization and Mapping. These scanners are mobile (handheld/backpack/drone-mounted) and map the environment while moving.
How it works
Uses LiDAR + IMU sensors Continuously tracks position in real time
Builds map without GPS (indoors too)
Uses SLAM algorithms to correct drift
Key Features
Fast scanning (walk-and-scan)
Real-time mapping
Lower accuracy than terrestrial (±1–3 cm typically)
Common Use Cases
Indoor mapping Warehouses
Large infrastructure (tunnels, roads)
Quick site surveys
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