Acquisition and characteristics of LiDAR point cloud data

May 19, 2023

Laser radar (LiDAR) point cloud data is obtained from airborne laser radar that emits laser signals to the ground and collects laser signals reflected from the ground. After that, the industry can calculate the accurate spatial information of these points through joint calculation and deviation correction. It looks like a simple data acquisition, but actually includes a more complex equipment structure and data acquisition process.

Airborne LiDAR Data Acquisition

First, LiDAR includes a laser ranging system, an optical-mechanical scanning unit, a control recording unit, a global positioning system, an inertial measurement system, and a set of imaging equipment. Second, when airborne LiDAR collects point cloud data, in addition to the weather needs to meet the flight conditions, it also needs to obtain airspace permission, design routes in advance, and conduct on-site surveys.

Features:

1. Work around the clock and actively obtain data;

2 Good concealment, strong anti-interference ability, and wide range of data acquisition;

3 Strong laser penetration ability;

4 The field workload is small;

5 The point cloud has high precision and the spatial coordinate information is accurate.

Therefore, the point cloud data obtained by LiDAR is often applicable to various aspects such as resource exploration, urban planning, agricultural development, water conservancy engineering, environmental monitoring, mine surveying, tunnel surveying, highway road surveying, cable monitoring, ocean deep water surveying, etc. .