Airborne laser scanning high-tech research in China has just started. Beijing Institute of Remote Sensing Application Research Professor Li Shukai other airborne laser scanning rangefinder – imaging system in 1996, completed the development of the prototype system, the system is also different from the current international popular airborne laser scanning altimetry systems, It will scan the laser rangefinder and multispectral imager uses a set of optical systems, hardware implementation of the DEM and by remote sensing images of the exact match, direct access to geo coded images, but the system is still some distance away from the utility. Such as Wuhan University, Professor Li Qingquan developed a ground-based laser scanning system, but not the location and orientation system integration together, mainly for accumulation of measurement. Because of the current is not high-precision INS system and reliable laser scanning ranging device, so there is no mature domestic airborne laser scanning altimetry system. The supervision personnel should check the working situation of green laser pointer.
The 1980s, laser measurement has been the rapid development, including the United States was developed by NASA and the atmosphere-ocean system, airborne LIDAR topographic survey equipment onboard systems. However, airborne, scanning laser altimetry load until the last ten years, significant progress was made, developed accurate and reliable Blue Laser Pointer altimetry sensors, including the Space Shuttle Laser Altimeter, Mars Observer Laser Altimeter, and lunar laser observations altimeter. They can be used to obtain the Earth’s surface, the surface of Mars and the moon’s surface high-resolution topographic information, which studies the Earth and Mars and other planets of the true shape has important scientific significance. In 1984, researchers have measured airborne 5mW laser pointer terrain study, and gives the measurement results. University of Stuttgart, Germany Institute of Photogrammetry in 1988, the study of airborne laser scanning topographical cross-section measurement systems; Survey of the Netherlands began in 1988 using laser scanning technology to extract topographic information feasibility study; University of Calgary in 1998 to airborne laser scanning system integration and test, through the purchase of the laser scanner and GPS, INS, and data communications equipment integration, to achieve an airborne laser scanning three-dimensional data acquisition system, and to a certain scale trials achieved the desired results; University of Tokyo, Japan, in 1999 the ground fixed laser scanner system integration and test. The import duty of 100mW laser pointer should be paid extra.
The 1990s, with the associated technology continues to mature, high-tech airborne laser scanning has been booming, Europe and other developed countries have developed a variety of airborne laser scanning altimetry systems, such as TopScan, Optech, Top Eye, Saab , Fli-map, TopoSys, Hawk2Eye other practical systems. Leica company also launched an airborne laser scanning altimeter Leica ALS40. According to statistics, as of July 2001, there are around 75 commercial organizations with 60 kinds of similar systems, from 1998 onwards, at an annual rate of 25%. With high-tech airborne laser scanning continues to mature, and its expanding range of applications. United States, Canada, Australia, Sweden and other countries for the development of shallow topographic low airborne systems, the use of airborne laser ranging devices, global positioning systems, gyro-stabilized platform for range finding and targeting equipment directly, and ultimately be shallow terrain. The customer should complete the payment of 200mW Laser Pointer according to the stipulation described in the note.