Tactical Digital Information Link
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A tactical data link (TDL) uses a data link standard in order to provide communication via radio waves or cable used by
NATO The North Atlantic Treaty Organization (NATO, ; french: Organisation du traité de l'Atlantique nord, ), also called the North Atlantic Alliance, is an intergovernmental military alliance between 30 member states – 28 European and two No ...
nations. All military C3 systems use standardized TDL to transmit, relay and receive
tactical Tactic(s) or Tactical may refer to: * Tactic (method), a conceptual action implemented as one or more specific tasks ** Military tactics, the disposition and maneuver of units on a particular sea or battlefield ** Chess tactics ** Political tacti ...
data. Multi-TDL network (MTN) refers to the network of similar and dissimilar TDLs integrated through gateways, translators, and correlators to bring the common tactical picture and/or common operational picture together.


Change of terminology

The term ''tactical digital information link (TADIL)'' was made obsolete (per DISA guidance) and is now more commonly seen as ''tactical data link (TDL)''.


Tactical data link character

TDLs are characterized by their standard message and transmission formats. This is usually written as <Message Format>/<Transmission Format>.


TDL standards in NATO

In NATO, tactical data link standards are being developed by the ''Data Link Working Group (DLWG)'' of the ''Information Systems Sub-Committee (ISSC)'' in line with the appropriate STANAG.


Synopsis of TDL links

In NATO, there exist tactical data link standards as follows: {, class="wikitable" , - ! Link
No !! STANAG !! Working Title !! Final title / description !! Communi-
cation !! Gene-
ration !! Comments , - , , 1 , , 5501 , , NATO data link between
Air Defence Main Control Centres , ,
Link 1 Link 1 is a computer network standard developed by NATO to provide information exchange for air defence. General description Link 1 is a point-to-point, duplex, non-encrypted, digital NATO Tactical Data Link (TDL) Standard for the automatic e ...

Tactical Data Exchange for Air Defence , , Point to Point , , 1st
S–Series , , Ground Link between
NADGE The NATO Integrated Air Defense System (short: NATINADS) is a command and control network combining radars and other facilities spread throughout the NATO alliance's air defence forces. It formed in the mid-1950s and became operational in 1962 as ...
entities limited and not secure , - , , 2 , , , , Radar to Control Centre Data Link , , , , , , 1st , , Cancelled (includes in Link 1) , - , , 3 , , , , Control Centre to higher HQ Data Links , , SHOC Early Warning System , , Point to Point , , 1st , , Slow Speed Warning Link from evaluation centres to
SHAPE A shape or figure is a graphics, graphical representation of an object or its external boundary, outline, or external Surface (mathematics), surface, as opposed to other properties such as color, Surface texture, texture, or material type. A pl ...
, - , , 4 , , 5504 , , Ground to Air Data Link , ,
Link 4 Link 4 is a non-secure data link used for providing vector commands to USAF and other NATO fighter aircraft. It is a netted, time division link operating in the UHF band at 5,000 bits per second. There are 2 separate "Link 4s": Link 4A and Link 4C. ...

TDL for the Control of
Military aircraft A military aircraft is any fixed-wing or rotary-wing aircraft that is operated by a legal or insurrectionary armed service of any type. Military aircraft can be either combat or non-combat: * Combat aircraft are designed to destroy enemy equipm ...
, , Point to Point , , 1st
C/R–Series , , Compatible to US TADIL–C to be operated in NATO
UHF Ultra high frequency (UHF) is the ITU designation for radio frequencies in the range between 300 megahertz (MHz) and 3 gigahertz (GHz), also known as the decimetre band as the wavelengths range from one meter to one tenth of a meter (on ...
(225–400
MHz The hertz (symbol: Hz) is the unit of frequency in the International System of Units (SI), equivalent to one event (or cycle) per second. The hertz is an SI derived unit whose expression in terms of SI base units is s−1, meaning that one he ...
) RF band , - , , 5 , , , , Fast HF Automatic Link , ,
Broadcast Broadcasting is the distribution of audio or video content to a dispersed audience via any electronic mass communications medium, but typically one using the electromagnetic spectrum ( radio waves), in a one-to-many model. Broadcasting began ...
, , , , 1st , , Cancelled (see Link 11) , - , , 6 , , 5506
(Draft) , , Missile Base to Control Centre Link , , Link 6 –
(NADGE Link) SAM Automatic Data Link , , Point to Point , , 1st , , Draft STANAG (US MBDL, ATDL–1, PADIL) , - , , 7 , , 5507
(Draft) , , ATC / Defence Link , , Link 7 –
TDL for ATC , , Point to Point , , 1st , , , - , , 8 , , , , HF Automatic Link , , , , Broadcast , , 1st , , Cancelled (see Link 1) , - , , 9 , , , , SOC /
Airbase An air base (sometimes referred to as a military air base, military airfield, military airport, air station, naval air station, air force station, or air force base) is an aerodrome used as a military base by a military force for the operation ...
Link , , , , , , 1st , , , - , , 10 , , 5510 , , Ship – Ship Link , , Link 10 – Maritime
Tactical Data Exchange , , Broadcast , , 2nd
M–Series , , STANAG cancelled (was used by BE, NL and UK) , - , , 11 , , 5511 , , Fast HF Automatic Link , , Link 11
Maritime Tactical Data Exchange , , Broadcast , , 2nd
M–Series , , Compatible to US TADIL–A to be operated in the HF & NATO UHF RF bands , - , , 11B , , 5511
(Vol. II) , , , , Link 11B –
Tactical Data Exchange , , Point to Point , , 2nd
M–Series , , Compatible to the US TADIL–B Ground to Ground TDL , - , , 12 , , , , Fast HF Automatic Link , , , , , , , , Cancelled (see Link 11) , - , , 13 , , , , HF Automatic Link , , , , Broadcast , , , , Cancelled (see Link 11) , - , , 14 , , 5514 , , Slow Semi–Automatic Link , , Link 14 –
Maritime TDL , , Broadcast , , 1st
D/M/S/E–Series , , Ship–Ship & Ship–Shore (only few applications) , - , , 15 , , , , Slow Semi–Automatic Link , , , , , , , , Ship–Ship, Cancelled , - , , 16 , , 5516 , , High Capacity,
ECM ECM may refer to: Economics and commerce * Engineering change management * Equity capital markets * Error correction model, an econometric model * European Common Market Mathematics * Elliptic curve method * European Congress of Mathematics ...
Resistant, Multifunctional, TDMA Link , , Link 16
ECM Resistant Tactical Data Exchange , , Broadcast , , 3rd
J–Series , , Compatible to US TADIL–J
(STANAG 4175 – Technical Characteristics of MIDS) , - , , 21 , , 5521
(Draft) , , Link in support of ACCS – (LISA) , , , , Point to Point , , 3rd
J–Series , , Under development (planned to replace Link 1 and Link 11B) , - , , 22 , , 5522
(Draft) , , NATO Improved Link 11 – (NILE) , , Link 22 , , , , 3rd
J–Series , , Under development (planned to replace Link 11) , - , , , , 5601 , , Standard for Interface of Data Links 1, 11, 11B, and 14 through a
buffer Buffer may refer to: Science * Buffer gas, an inert or nonflammable gas * Buffer solution, a solution used to prevent changes in pH * Buffering agent, the weak acid or base in a buffer solution * Lysis buffer, in cell biology * Metal ion buffer * ...
, , , , , , , , see AdalP 12 , - , , , , 5602 , , Standard Interface for Multiple Platform Link Evaluation (SIMPLE) , , , , , , , , Enables transmission of J-Series (TADIL-J) messages over IP-based protocols , - , , MIL-STD-6020 , , 5616 , , Standard for data forwarding between tactical data systems employing Links 11/11B and tactical data systems employing Link 16 , , MIL-STD-6020, DoD Interoperability Standard: Data Forwarding between TDLs , , , , , , , - , , IJMS , , , , ECM Resistant Communication System (ERCS) , , IJMS – Interim JTIDS/MIDS Message Specification , , Broadcast , , 2nd, M–Series , , Interim Data Link Standard to be replaced by Link 16 , - , , SADL , , , , Situational Awareness Data Link , , SADL – Situational Awareness Data Link , , Broadcast , , 1st, K-Series
2nd, K/J–Series , , Data link adopted from
EPLRS The Enhanced Position Location Reporting System (EPLRS) is a secure, jam-resistant, computer-controlled communications network that distributes near real-time tactical information, generally integrated into radio sets, and coordinated by a Network C ...
to provide A-10s and F-16s data link capability air-to-ground and air-to-air


See also

* BACN * Global Information Grid * Inter/Intra Flight Data Link (IFDL) *
JREAP {{Unreferenced, date=June 2019, bot=noref (GreenC bot) The Joint Range Extension Applications Protocol (JREAP) enables tactical data messages to be transmitted over long-distance networks, e.g. satellite links, thereby extending the range of Ta ...
*
MANDRIL The mandrill (''Mandrillus sphinx'') is a large Old World monkey native to west central Africa. It is one of the most colorful mammals in the world, with red and blue skin on its face and posterior. The species is sexually dimorphic, as males ...
*
Multifunction Advanced Data Link Multifunction Advanced Data Link (MADL) is a fast switching narrow directional communications data link between stealth aircraft. It began as a method to coordinate between F-35 aircraft (the Joint Strike Fighter), but HQ Air Combat Command wants t ...
*
Network emulation Network emulation is a technique for testing the performance of real applications over a virtual network. This is different from network simulation where virtual models of traffic, network models, channels, and protocols are applied. The aim is to ...
for simulation / emulation of tactical data links *
SIMPLE Simple or SIMPLE may refer to: *Simplicity, the state or quality of being simple Arts and entertainment * ''Simple'' (album), by Andy Yorke, 2008, and its title track * "Simple" (Florida Georgia Line song), 2018 * "Simple", a song by Johnn ...
* Tactical Common Data Link


External links

* Federation of American Scientist
TDL information page
* This article was originally based on public domain text fro
Army Airspace Command and Control in a Combat Zone
Headquarters, Department of the Army, publication FM 3-52 (FM 100-103), August 2002 Military communications NATO standardisation