Laser navigational lights

Usage of lasers as sources of light narrow-beams in beacons considerably increases of detectable distances in area of large optical thickness in dense atmospheric smokes, when traditional lights are not visible. On the one hand, it is reached due to a high directivity of the laser beams, and with other - high spectral brightness and concerning high output power of used lasers. Besides, usage a small optical diameter of the laser beam allows creating the one position range. This circumstance in a number of cases is the key to solve the navigational problem. In the paper the items of information on domestic laser aids to navigation (AtoN) types are resulted. The features are considered from the comparison positions. Results of field tests are considered and the problems of operational use and the further development perspectives and usages are considered.