2.
Remedial Measures.
a. Remedial ECCM are taken in response to enemy jamming.
Remedial ECCM
techniques reduce the effectiveness of enemy jamming efforts.
b. Transmission protection requires the preoperational selection of
antenna placement, transmitter power selection, and frequency usage be in
concert with preventive ECCM principles.
Using steerable null antenna
processors (SNAP-1) allows efficient jam-free reception. This occurs even
when the operator does not know the location of the jamming or
communications transmitter.
3.
Signal Security Measures.
ECCM and SIGSEC are closely
related.
SIGSEC's major function is to deny an enemy the ability to exploit
friendly
SIGSEC techniques include emission
security
and control, transmission security, cryptographic security, and
physical
security.
a. Emission security and control involves preventing an enemy from
targeting friendly communications.
b. The type of information sent and how it is sent affect an enemy's
ability to exploit friendly communications.
The key is to minimize
transmissions.
c. Cryptographic
security
deals
with
codes,
keylists,
and
COMSEC
devices.
d. Common sense measures and adherence to unit operational policies are
the keys to good physical security practices.
2-15
SS0135
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