Understanding How LIDAR Works for Land Mapping Services


Engineers, mapping technicians, city planners, Geographic Information System (GIS) professionals and surveyors find LIDAR (Light Detection and Ranging) useful and cost-effective. It is the latest method used by land mapping service companies to produce more precise topographical maps. It is also utilized for topographic surveys and other related applications.

Examples of Applications of LIDAR Mapping include:

• Flood risk mapping
• Real estate development
• Coastal zone mapping
• Urban modeling
• Oil and gas exploration
• Power line transmission or pipeline corridor planning
• Other restricted areas access

LIDAR maps are created using air-mounted lasers that send thousands of pulses per second, and commonly measure elevation within 6 inches. It is done through sending laser pulses and detection of reflected signals and measuring plane elevation with precision. This device is pointed straight forward, allowing detection of the plane's elevation from the ground as well as both sides. It covers a wide land area on each pass. Commonly, it collects information over land measuring 1000 feet at a 2000 foot altitude.

Because of this mapping innovation, 400 square miles in 12 hours can be collected, with millions of reference points. LIDAR mapping replaced traditional data gathering systems, and is a hundred times quicker than the conventional electronic surveyor's transit tool, or other phased out surveying techniques.


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