DAS Flashcards
What does DAS consist of?
RWR
MWS
CMDS
What are the 2 ways threats can be detected?
Missiles can be detected by analyzing their exhaust plumes (MWS)
Radar guided missiles can be detected by analysing their radar signatures (RWR)
What are the frequencies emitted by radar guided missiles?
C - D band 0.5 - 2 GHz
E - J band 2 - 20 GHz
K band 32 - 40 GHz
How does the RWR work?
It detects and identifies RF threats against a library of entries that are loaded prior to the mission. (Mission dependant data MDD)
What are the 2 RWR software features?
DASc - tac picture of current threat
Electronic Support Measures (ESM) - additional reporting
How does the MWS work?
Detects, characterises and tracks missile exhaust plumes based on a database loaded prior to mission via its own User data module (UDM
senses Uv radiation and angle of arrival.
Threat data routed to DASc and countermeasure deployed.
How does the CMDS work?
carries out programmed firing of the countermeasures, individually or in predefined patterns, on request from the DASc or operator.
Where is the RWR Receiver processor?
Rear bay, bottom forward shelf, right hand side.
How does the library classify the emitter type?
RF
Pulse repetition frequency (PRF)
Pulse width (PW)
Where are the Quad receivers?
2 on the nose
2 on rear of each sponson
+/- 90 azimuth +/- 45 elevation
360 coverage
Where is the RWR data transfer unit (DTU)?
On the pilots console, inside the right cockpit door (above SEDTU)
what does the DTU do?
Reads and writes data from and to PCMIA 128mb card.
PCMIA card contains MDD and PFM.
What is PFM?
Pre flight message:
dispense patterns
countermeasure tactics.
Used by DASc and CMDS
Where is the MWS ECU?
rear bay, centrally on the bottom forward shelf.
How many EOMS are there?
5
2 on the nose 2 on the sponsons 1 underneath aircraft, right of the centreline.
