رد: التايفون كما يراها مصنعوها
حديث عن بعض قدرات نظام الحرب الألكترونية ونظام داس
The Praetorian is part of Eurofighter’s
Defensive Aid Sub-System (DASS) providing
threat assessment, aircraft protection and
support measures in extremely hostile and
severe environments. The system is based
on integrated ESM-ECM equipment against
RF emitters and an active Missile Approach
Warner (MAW) system against missile
threats. The passive ESM provides fully
spherical coverage, with effective threat
identification in extremely high-density
environments. The ESM assesses potential
threats and then provides appropriate information
to the ECM and other aircraft systems
to facilitate the automatic initiation of
active countermeasures. Special facilities
have been incorporated within the ESM
receivers to enable effective handling of
simultaneous signals, ensuring that the ESM
works effectively in environments with extremely
high pulse density. The key elements
in the ESM system will provide a pilot with
reliable Situation Awareness in any scenario.
The ECM produces radio frequency transmissions
to defeat the threats by creating
masking, deception or confusion in the hostile
radars. In order to be effective against
any radar threats that Typhoon may face,
the ECM is equipped with a rich variety of
alternative ‘Jamming’ techniques.
The choice of technique is made in conjunction
with the aircraft's Defensive Aids Computer
and it is based upon a list of appropriate
counter measures integrated by a sophisticated
Mission Data set, together with
a real time mapping of the system’s resources
that are already being employed to
jam higher priority threats. The ECM equipment
provides both on-board transmission
through solid state receiving/transmitting
modules and phased array antennas and
off-board transmission through advanced
supersonic towed decoys based on TWT
technology.
The MAW gives optimum warning approach
time for effective countermeasure
deployment, against current and projected
future missile threats. The MAW is operational
over all aircraft sectors in any environmental
conditions providing effective
protection against false alarms through
the application of cluttering rejection techniques.
The EuroDass Technical Director Alessandro
Ercolani stated: “The technology is a winning
factor in the Praetorian. Elements such
as Towed Decoys, System Software, Digital
Radio Frequency Memory, Solid State
Transmitter and Phased Array Antennas
make the product competitive and adequate
to produce a cost effective capability for any
global Air Force.”
In the recent Libya operations the DASS
worked perfectly. The pilots faced many
challenges during the missions, as NATO
forces worked to combat the aggressive
actions of Libyan forces. Without being able
to go into details as to how these attacks
were addressed, Wg. Cdr. Attridge, from XI
Squadron, deployed on operations in March
2011, did say: “The Defensive Aids Sub-System
on the Typhoon is world-class. Our pilots
staked their lives on it every day, with
no hesitation”.
Centuries ago there were Praetorians to
defend us… today there is ‘The Praetorian’.
