Criteria. Refer to Table 19-1 of MCO P3570.1A for a list of laser
devices for which range design criteria are established. Figures and Tables
in this section are referenced to MCO P3570.1A.
Planning Factors. Special terms and considerations particularly
applicable to laser range design criteria are as follows:
a) The distance within which the collimated laser bean present8 a
potential eye hazard, the Nominal Ocular Hazard Distance (NOHD) nonmagnified,
is comparable to the maximum range of projectile firing weapons.
b) The NOHD is greatly increased when viewing the collimated laser
beam with a telescope and is termed the magnified NOHD.
c) Horizontal lateral buffer zones and vertical buffer zones at the
periphery of the target area will be determined to accommodate inherent
aiming accuracy and stability of laser device being used.
d) Buffer zones should be greatly expanded for situations liable
to involve inexperienced personnel, improper target selection, or inaccurate
e) Use of natural backstops (mountains, hills, and treelines) is
especially desirable to limit length of Laser Surface Danger Zone (LSDZ).
f) Airborne laser operations will require LSDZ to be clearly marked,
visible, and recognizable from lasing aircraft.
g) The many types of laser devices and uses in conjunction with
range firing, troop exercises, tank maneuvering, and operations outside range
areas necessitates careful planning for location and delimiting of target area
and LSDZ for each individual exercise.
h) Steps must be taken to avoid indirect lasing from specular
(mirror-like) targets or icy or snowy ground surfaces.
i) Area S in Figures 19-5 and 19-6 is defined as the 100 ft. (30.5
m) radius around the target from which all specular surfaces should be
removed, covered, painted, or destroyed.
j) Area T in Figures 19-5 and 19-6 is defined as an area distance T
from laser firing point within which no targets will be lased.
Design Steps. The target area will be large enough to accommodate
laser range danger fan for type of laser device to be used and type of
exercise and maneuvering. When the laser device to be used is known, T, S,
and NOHD and horizontal and vertical buffer zones can be determined from
firing tables. Use of current firing range surface danger zones, in general,