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Jamming by deception

Repeater Jammer in 135°
Figure 1: Jamming by deception

Deception uses ECM to forge false target signals that the radar receiver accepts and processes as real targets. The pulse repetition frequency of the false target signals are:

See the picture: in azimuth of 135° seven targets appear behind each other. Obviously these are a deception disturbance since they e.g. are wider than it has the own antenna diagram expected.

Such deceptions are unmasked by changing the pulse repetition frequency specifically.