The appearance of this kind of green laser pointer is very common

The appearance of this kind of green laser pointer is very common.
Surveying department of the Netherlands since 1988, began a feasibility study using laser scanning technology to extract topographic information; University of Calgary, Canada in 1998, the airborne laser scanning system integration and test, through the laser scanner purchased integration of GPS, INS, and data communications equipment, an airborne laser scanning three-dimensional data acquisition system, and a certain scale trials to obtain the desired results; University of Tokyo, Japan in 1999, ground fixed laser scanning system integration and test. 1990s, along with related technologies continue to mature, airborne laser scanning altimetry has been booming, Europe and the United States and other developed countries has developed a variety of airborne laser scanning altimetry system. Here will introduce a kind of basic sample of green laser pointer .
TopScan, Optech, Top Eye, Saab, Fli-map, TopoSys, Hawk2Eye such as a variety of practical systems. Leica introduced the Leica ALS40 of airborne laser scanning altimeter. According to statistics, as of July 2001, about 75 commercial organizations use a similar system of more than 60 kinds, from the 1998 rate of 25% per year increase. With the airborne laser scanning altimetry continues to mature, and its expanding range of applications. Measuring the development of low-altitude airborne system the United States, Canada, Australia, Sweden and other countries for the shallow water terrain, the use of airborne laser distance measuring equipment, global positioning systems, gyro stabilized platform and other equipment directly to the ranging and positioning, and ultimately shallow sea terrain. This kind of green laser pointer has the ordinary appearance.The quality control of green laser pointer contains many steps
The typical U.S. military is now a unique underwater topography of laser scanning measurement system using laser radar technology to the implementation of the shallow water depth of long-distance measurement and surveying and mapping the topography of the coastal zone, monitoring coastal erosion. The system was officially put into use in March 1994. HARC's laser radar topography measurement system uses a scanning laser rangefinder using GPS positioning, attitude measurement device is estimated that the inertial navigation system. It is understood that this system is nominal to "overnight" to provide the DEM, DEM generation speed is several times faster than conventional methods and can achieve near real-time positioning of the remote sensing information and generate the DEM, and efficiency than the existing access to information technology increased by about a few times. It is commonly seen for green laser pointer .