Lidar vs GPS survey for a large open site? - gps topographic survey
What are the pros and cons of lidar topographic study compared a traditional method (GPS) for a large, open site?
Thanks for the help.
Thursday, January 21, 2010
Gps Topographic Survey Lidar Vs GPS Survey For A Large Open Site?
3 comments:
Hello WiMax,
Lidar benefits of large Web sites: It may be cheaper than methods based on the countryside. The data can be collected in a short time. No need for access to the control study and review of data end up in the survey. Aerial photographs is often given as an extra for shipping.
LIDAR Disadvantages: It is profitable in the smaller locations. Collecting data is a function of time.
The output can be classified (surface detail, foliage, buildings, etc.), but not in great detail how the traditional survey. The lidar is less accurate than traditional methods (with a typical vertical accuracy + / - 12 cm).
Stuart Thomas
Manager of Geomatics
www.starnetgroup.com
Hello WiMax,
Lidar benefits of large Web sites: It may be cheaper than methods based on the countryside. The data can be collected in a short time. No need for access to the control study and review of data end up in the survey. Aerial photographs is often given as an extra for shipping.
LIDAR Disadvantages: It is profitable in the smaller locations. Collecting data is a function of time.
The output can be classified (surface detail, foliage, buildings, etc.), but not in great detail how the traditional survey. The lidar is less accurate than traditional methods (with a typical vertical accuracy + / - 12 cm).
Stuart Thomas
Manager of Geomatics
www.starnetgroup.com
Detection tools only collect lidar elevation data. In order to make these geographic data, the positions of data points be known. A high precision global positioning system (GPS) antenna is mounted on the upper torso. Since the LIDAR sensor data points that receives location data, are simultaneously recorded by the GPS sensor.
Comparing data from the LIDAR survey methods for standard GPS, the survey in a sampling error of about 15 centimeters (6 inches)
From: Sanjay
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