The customer has added another order of 100 green laser pointer .
Data classification. Classification of point cloud data, the data should be tested, remove the wrong point and the height anomaly point, such as particularly low point (point) below the ground or a
particularly high point. And establishment of ground data types, separation of non-ground data. According to customer requirements, classification of non-ground data, such as building class data,
the transmission line data, data of railroads. In addition, according to the height above ground non-ground point data classification, such as the classification of different vegetation. Then the
output data. The leaders in the green laser pointer company lay much importance on the quality assurance.
Coordinates match. In a point cloud, the relative position between the scanning point is correct, but the relative position of the point between the point cloud is correct or not, depending on
whether they are in the same coordinate system. In most cases, a point cloud can not be established throughout the model of the object, therefore, need to be pieces of the point cloud accurately
the assembly together, so that the point in the same coordinate system. 6. Orientation and mosaic of the image data. The first digital image to extract and process, combined with the internal and
external orientation elements of aerial photos, aerial triangulation, DTM data and then combined with laser scanning directional mosaic, the formation of the orthophoto map. 7. Create a 3D terrain
model. The agent has purchased several new types of green laser pointer .
From a functional perspective, LIDAR is a laser of a set of three technologies of Global Positioning System (GPS) and inertial navigation system (INS) and a system for access to data and generate
accurate DEM. The combination of these three techniques can be highly accurately position the laser beam hit the spot on the object. It consists of topographic LIDAR system matured for terrestrial
digital elevation model (DEM) and ripe for the application for underwater DEM hydrological LIDAR system, the common feature of these two systems using laser beams detection and measurement, this is
also LIDAR term in English translation, namely: LIght Detection And Ranging - LIDAR. The green laser pointer can be divided into several parts.green laser pointer has to obey the criteria
The laser itself has a very accurate ranging capability, ranging accuracy up to several centimeters, while the accuracy of the LIDAR system in addition to the factors of the laser itself, but also
on the laser, GPS and inertial measurement unit (IMU) of the three synchronization inherent factors.
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