(3) All needs must be validated after being listed as requirements. The validation is
done based on doctrine, command directives, or standing operating procedures (SOP).
(4) The final step is resource allocation; that is, identifying signal resources to best
satisfy the mission.
b. Network design is done after network planning. It is the process of identifying signal
site locations to best support the mission. The following items should be considered in network
design:
(1) The first step is to prepare a density overlay of the units to be supported. This is a
drawing on a transparent medium (acetate) identifying unit locations on a tactical situation map.
(2) Using the population density overlay, the next step is to determine the number and
location of area signal nodes. The following points should be considered when choosing node
sites:
(a) The site should support displacement. The proposed node should be located
so it will be in a position to follow units as they displace. The location should also have
sufficient accessibility to allow for orderly movement into and out of the site.
(b) Radio frequency interference, which comes from two sources, must be
analyzed. The first source is the immediate area. Thus, if the site is to be shared, a cosite
frequency analysis must be done. The second source is the surrounding area. An analysis of the
area should be done to determine any source of potential interference
(c) The site should be available and logistically supportable.
(d) The site should have good LOS and its terrain features should provide for
good area coverage.
(e) The site should be free of obstructions and have usable space, drainage, and
type of vegetation.
(3) Appendix C contains additional information on selecting and setting up a site.
c. Transmission systems engineering.
(1) Multichannel systems diagram. Each type of available transmission medium
(SATCOM, troposcatter, LOS radio, etc.) should be defined and its capacity noted. The goal is
to prepare a multichannel systems diagram to show the use of the different media in the network.
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