(4) The spark signal is like that made by a spark gap Morse
(5) Other popular and effective signals can be applied to the
jammer's carrier. They include random Morse keying (on-off keying),
c. Reradiation jamming normally uses special equipment. Normally
most widely used method uses the delayed retransmission of a recorded
To conduct this form of jamming, a very slight delay
is used when rebroadcasting the recorded signal.
The following are
other forms of reradiation jamming:
(1) A repeater can intercept, alter, amplify, and retransmit
predetermined signal in response to the reception of a given signal.
and chaff, to confuse electronic systems by producing false signals
or images. It is sometimes called mechanical jamming.
d. The are three major systems for executing jamming missions.
They are ground-based systems, airborne platforms, and expendable
Determining the delivery vehicle is based on several
factors. These include:
(1) Target link distance.
This is the distance between the
(2) Jammer-to-receiver distance.
This is the distance from the
jammer to the intended receiver.
(3) Terrain factors.
The line-of-sight factor between the
jammer and the target receiver is important. A hill or mountain can
mask the jamming signal.
(4) Effective radiated power quotient. This is the computation
of the effective radiated power of the jammer and the enemy
It is used to determine the jammer radiated power