8.8 IFF & TDL Flashcards
IFF
System that ships and stations use to identify friendly aircraft and ships
Consists of:
Interrogators
Transponders
Processing Equipment
Related Antenna Systems
IFF modes
Naval Tactical Data System (NTDS) and Combat Direction System (CDS)
Receives data from ship’s sensors and other ships using tactical data links
Strike Group Coordinator that ensures a correct Link for the Strike Group
Force Track Coordinator (FTC)
NTDS Symbology
Tactical Data Link (TDL)
Joint Chief of Staff (JCS) approved and standardized comms link used for transmitting tactical data among military platforms.
Provides encrypted, near real-time information
Watchstander is the Tactical Information Coordinator (TIC)
Link-11
Used to exchange tactical digital information between airborne, land-based, submarine, and shipboard tactical data systems.
Uses a half-duplex, netted comms. system that operates on the HF and UHF bands to exchange tactical data among participants
OPTASK LINK includes:
List of Primary and Secondary Frequencies
Net Control Station (NCS)
Gridlock Reference Unit (GRU)
Initial Data Link Reference Point (DLRP)
Picket Units (PU)
Net Control Station
Only one NCS who controls the Link-11 Net and provides interrogations for all participants.
The node that controls the traffic
Picket Unit (PU)
Units designated by the OPTASK LINK to transmit and receive tactical information in roll call mode
Station Modes of Link-11
Net Synchronization
Net Test
Roll Call
Broadcast
Short Broadcast
Radio Silence
Data Link Reference Point
Common reference point in lat/lon which all Link-11 participants use
Gridlock Reference Unit
Acts as a common frame of reference that facilitates each ship maintaining correlation and gridlock across the Strike Group
Net Sync
Consisting of a series of preambles, operators use Net Sync as the first step in verifying RF connectivity between units.
TIC starts and stops Net Sync
Net Test
Second step in verifying connectivity.
TIC operators also use Net Test to check and set line levels
Broadcast
A continuous series of short broadcasts separated by two frames of dead time to all members of the net.
Short Broadcast (SBC)
Identical to a picket reply. A single burst of information used to send info out across the link to all users.
Radio Silence
Also set at the DTS, a PU in radio silence can receive data but cannot transmit or respond if polled
Link-16
Nodeless data link used to exchange tactical data amongst all units
Link-16 Components
Net Time Reference
JTIDS Unit
Forwarding JTIDS Unit
Reference Point
Relative Grid
Secured Voice Channels
Shipboard JTIDS terminal contains two voice channels
Precise Participant Location and Identification (PPLI)
Contains:
Lat, Lon, Altitide
Course speed
IFF Codes
Platform
Mission
Location
Fuel status
Weapons status
Unique JTIDS Unit address
Advantages of Link-16
Nodeless
Frequency Hopping
Secure Voice channels
Purpose of SAT 16
Satellite Link-16
Utilizes Beyond LOS to send information
