Principles of GSR operations. A radar system is a means of detecting and locating targets. The set generates a
pulse of radio frequency (RF) energy which will, upon striking an object, reflect to the radar and appear as an
electronic image. Because RF energy travels in a straight line and at a constant rate of speed, target range and
azimuth can be accurately located. The moving target indicator (MTI) technique is not effective in detecting fixed
targets such as terrain or structures. It is restricted to line-of-sight (LOS) detection, and its effectiveness is limited
by weather conditions.
Radars are susceptible to enemy electronic countermeasures (ECM) which inhibit or prevent their employment.
Since radars emit radio signals, they are subject to enemy intercept. Analyzed intercepted signals can provide
the enemy with location and radar type being used. This identification can provide enough information to
determine the size and type of unit opposing his forces.
The AN/PPS-5 (SERIES) (Figure 1-3) and AN/PPS-15A(V)1 (Figure 1-4) radars are in army maneuver elements.
The military intelligence (MI) battalion, heavy division, is composed of four companies (see Figure 1-1).
Figure 1-1. MI Battalion, Heavy Division.
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