e. Radar has matured to the point where it is a very important asset; in
many cases it is the only sensor used.
The vulnerability of platforms
operating radars is greatly offset by the penetrating capability,
resolution, and geometric fidelity of radar over long distances.
Because
microwaves can penetrate virtually all atmospheric conditions, airborne
radars are limited only by the ability of their platforms to operate in
adverse weather conditions. There are two type of radars in use:
(1) Side-Looking airborne radar (SLAR) is flown by the Army's OV-1D
Mohawk using an active electronic device which emits energy and senses that
portion of the emitted energy; this energy is returned by reflection from
the terrain and objects on the terrain. It should be noted that since the
radar pulse is line-of-sight, any high ground or tall objects in the path of
the radar pulse will block out radar returns from objects behind them
(Figures 1-12 and 1-13).
Figure 1-12. SLAR Sensing.
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IT 0649
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