The unique properties of laser light, and above all, small angular divergence, allow the use of lasers for navigation systems of planes landing. Even a relatively low-power laser can create beacons, which range exceeds the long-rang of traditional navigation lights with incandescent power of several kilowatts. Vividly advantage of laser beacons is seen in conditions of poor visibility due to the specific of the laser radiation spreading in the atmosphere. Using the radiation transfer equation in the atmosphere the visibility range calculation method of course and glidepath laser beacon in landing system "Glissade" and the definition of the apparent length of the spatial guiding lines created by these beacons due to the scattering of laser radiation in the atmosphere. The concept of an "appearance beams" was determined from the condition of the color contrast threshold exceeding which level depends on the brightness of the background. In calculating of the laser beacons and spatial guide lines visibility distance for small optical thickness a good approximation to the brightness transfer equation solution is the approximation of single scattering. On the basis of this approximation a series of calculations for atmospheric haze from the meteorological visibility range (MDV) Sm in the range of 1 to 5 km was held. For an average density of fog in the Sm in the range of 0,3 to 1,0 km calculation was performed with taking into account the multiple scattering.