the laser wavelength of the other is transparent

Possible targets including tanks and other armored vehicles, surface - air missile positions and ballistic vehicles / erection / launchers. Chemical / biological weapon is a weapon of mass destruction. Face of the growing proliferation of chemical / biological weapons threat, many countries are taking measures to strengthen the defense of such weapons. U.S. Department of Defense that, on the battlefield need to be able to use, fast response, sensitive surveillance system, so as to provide chemical / biological threats to the police. The company will take charge of taking apart the laser pointer .
This system is different from the air defense and antisubmarine systems, must have a search, detection, identification, quantification, monitoring and diagnosis. Laser radar can be used for chemical / biological warfare agents telemetry. Each type of chemical warfare agents only absorb specific wavelengths of laser, the laser wavelength of the other is transparent. Contaminated by chemical warfare agents on the surface is reflected at different wavelengths of laser light. This feature of chemical warfare agents, it allows the use of laser radar detection and identification. Can take advantage of differential absorption lidar, differential scattering, backward elastic scattering, fluorescence induction principle, to achieve the detection of chemical and biological warfare agents. Chemical / biological warfare agent detection laser radar uses lasers, mainly CO2 laser and Nd: YAG laser. CO2 laser radar in 1988, France and the United States on the development of chemical warfare agents Mirela laser detection system, developed a transitional hardware was tested in France, for the further development of the data. In 1994, U.S. Department of Defense study on the battlefield, the laser radar to detect the role of chemical warfare agents, in order to distinguish the French developed the distance-based dual CO2 laser differential absorption lidar system, and conducted field tests. Two more customers has bought this kind of laser pointer .
The system uses a programmable servo motor driven scanner to complete hemisphere scan, high-speed direct detection receiver, in the 1 ~ 2km distance detection of chemical vapor plume smoke, smoke plume mapping the movement and spread, to obtain a distance of about 20m resolution.