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Tactical Data Information Exchange Subsystem (TADIXS)

The Tactical Data Information Exchange Subsystem (TADIXS) is designed to support the exchange of over-the-horizon targeting (OTH-T) information between shore and Fleet-based computer systems (collectively referred to as tactical data processors [TDPs]) for Navy cruise missile operations.

The Tactical Data Information Exchange Subsystem (TADIXS) is designed to support the exchange of Over-The-Horizon Targeting (OTH-T) information between shore and fleet-based computer systems (collectively referred to as Tactical Data Processors (TDPs)) which support Navy cruise missile operations. Implementation of OTH-T data communication via TADIXS has been accomplished in four distinct phases, ranging from a manual, contention-based network to a fully automated worldwide system with independent TADIXS and Officer in Tactical Command Information Exchange Subsystem (OTCIXS) networks.

Four important networks support the dissemination of tactical intelligence. The Tactical Receive Applications (TRAP) and Tactical Data Exchange System Broadcast (TADIXS-B) broadcast networks disseminate global detection and cueing information to users worldwide. The Tactical Information Broadcast Service (TIBS) network disseminates theater area information with tracking accuracy. The Tactical Reconnaissance Intelligence Exchange System (TRIXS) network disseminates tactical intelligence with targeting accuracy.

Tactical Data Information Exchange Systems (TADIXS) are the "third pillar" of the Copernicus architecture. The TADIXS are not physical but logical nets, established at the request and in the mix desired by the tactical commander. They therefore should not be considered as individual communications streams, but as functional delineations of operational, support, and sensor information that would be accommodated over dynamically managed Communications pathways. One major impact of the TADIXS will be to nearly eliminate the Navy message as an operational format, moving instead toward binary data files, displayed as highresolution graphics and imagery.

The current ON-143/(V)6 software contains the TADIXS and Officer-in-Tactical Command Information Exchange Subsystem (OTCIXS) programs, and the submarine version additionally hosts the special-interest and general-service Submarine Satellite Information Exchange Subsystem (SSIXS) subscriber program, the FLT SECURE voice, and TACBUOY programs. This program supports both the KG-35/36 and KG-84A crypto, with the next upgrade to include KG-84C. The TADIXS/OTCIXS programs provide inter- and intra-Battle Group communications and are designated as the return path for ship-to-shore OTH-T communications.

In TADIXS Phase I, OTH-T communications were initially accomplished by the manually intensive Outlaw Shark Digital Interface Unit (OSDIU) at shore and afloat units. Shore users time-shared radio assets via a Digital Sharing Device (DSD) located at the supporting Naval Computer and Telecommunications Area Master Station (NCTAMS).

In TADIXS Phase II the Interconnecting Group ON-143(V)61USQ replaced the OSDIU as the link control device. The OTCIXS satellite network was introduced to provide a two-way satellite link to support inter- and intra-Battle Group communications. In Phase II, OTCIXS was also used for OTH-T communications support between shore and afloat units.

TADIXS Phase III was characterized by a complex DSD/ON-143(V)61USQ shore configuration, the addition of a second ON-143(V)6/USQ for afloat platforms, and the introduction of a new shore-to-ship tactical circuit, TADIXS, to support OTH-T communications. The OTCIXS satellite network continues to provide inter and intra-Battle Group communications and is now designated as the return path for ship-to-shore OTH-T communications.

TADIXS Phase IV will replace the currently operational Phase III shore system, providing integrated worldwide connectivity among the OTH-T community, using both dedicated connectivity and satellite links, through a series of computer-controlled switching nodes called TADIXS Gateway Facilities (TGFs).

The shore user systems has dedicated connectivity with the TGFs, which are located at the four NCTAMS at Norfolk, Virginia; Bagnoli, Italy; Wahiawa, Hawaii; and Finegayan, Guam; and at the Naval Computing and Telecommunications Station (NCTS) in Stockton, California. The TGFs interface with Gapfiller, FLTSATCOM, or LEASAT links and provide routing control within their respective coverage areas. The TGFs provide shore user access and routing to/from both the TADIXS and OTGIXS satellite networks. The TGF is the source of a shore-to-ship broadcast of OTH-T data, via the TADIXS satellite network, to cruise missile equipped ships and submarines As in TADIXS Phase III, the OTCIXS satellite network continues to provide inter- and intra-Battle Group communications and ship-to-shore OTH-T communications. The afloat platforms continue to use the same equipment suites available during Phase III.

Phase IV consists of four computer programs hosted on two ON-143/(V)6s and two UYK-44s. The TADIXS Gateway Processor (TGP) and Remote Controller (REMCON) programs are hosted on the UYK-44 and the Tactical Data Processor Controller (TDPCON) and Radio Controller (RADCON) on the ON-143/(V)6. Phase IV provides improved message routing and accountability and a demand-assigned multiple-access (DAMA) capability for the OTCIXS user. Additional benefits include reduced satellite channel loading through the use of dedicated landlines for data transmission and equipment redundancy.

In 1996, The ASD (C3I) approved the "Integrated Broadcast Service (IBS) Plan" which provides for the integration of the Tactical Information Broadcast Service (TIBS), the Tactical Related Applications (TRAP) Data Dissemination System (TDDS), the Tactical Reconnaissance Intelligence eXchange System (TRIXS), TADIXS-B, and the BINOCULAR efforts into a standardized protocols with compatible hardware and software. This effort was directed by the 1996 House Intelligence Bill.


The shore-based TDP facilities which employ services provided by TADIXS include: Fleet Ocean Surveillance Information Centers (FOSICs) or Facilities (FOSIFs), Submarine Operating Authority (SUBOPAUTH) Shore Targeting Terminals (STTs), Cruise Missile Support Activities (CMSAs), and the Joint Operational Tactical System (JOTS). The Washington Planning Center (WPC) serves as an operational backup for the CMSAs and as the test and evaluation facility for the Mission Data Distribution System (MODS), and the CMSA TDP system. COMASWFORTHIRDFLT, located in Hawaii, uses the Tactical Data Display System (TADS), the TDP system upon which the STT is based, for Research and Development purposes. The FOSICs/ FOSIFs use the Ocean Surveillance Information System (OSIS) as their TDP. Each shore site will be provided with a Tactical Data Processor Controller (TDPCON) for connectivity with the local TGF. The local TGF will perform routing services and provide satellite access to TADIXS and OTCIXS. In TADIXS, the FOSICs/FOSIFs, STTs, CMSAs, and JOTSs primarily operate in a transmit mode, broadcasting data to fleet users. In OTCIXS, the FOSICs/FOSIFs, STTs, CMSAs, and JOTSs primarily operate in a receive-only mode to accept command/control and surveillance information from afloat TDP systems for track correlation and generation purposes.

The TADIXS Phase IV shore configuration comprises four programs: the TADIXS Gateway Processor (TGP), Remote Controller (REMCON), Radio Controller (RADCON), and the TDPCON. The TGP and REMCON programs are both hosted in separate AN/UYK-44(V) data processing sets. The RADCON and TDPCON programs are hosted in separate ON-143(V)6/USQ interconnecting groups. The TDPCON is located at the TDP site. The TGF, located at the NCTAMS or NTCS, Stockton, consists of the TGP, REMCON, RADCON, and associated equipment. Each TGF will be capable of accessing up to eight satellite links within two satellite coverage areas that include that TGF. These accesses may involve any combination of TADIXS and OTCIXS RF networks.

Afloat Deployment

Afloat platforms use one of three types of TDPs.

The Tactical Flag Command Center (TFCC) uses the Flag Data Display System (FDDS) as a TDP to process and display OTH-T data required by the Officer in Tactical Command (OTC) to manage a tactical environment.

Surface ships equipped with cruise missiles use the TOMAHAWK Weapon Control System (TWCS) as a TDP to support receipt of OTH-T data needed to direct a cruise missile.

Cruise missile equipped submarines employ the Combat Control System (CCS) MK1, which is interfaced to the OTCIXS ON-143(V)6/USQ via the Sensor Interface Unit (SIU) J-3780/UYK

The TADIXS and OTCIXS surface ship and submarine programs are hosted in an ON-143(V)6/USQ satellite link controller. The ON-143(V)6/USQ provides automatic crypto synchronization, store and forward of incoming and outgoing teletypewriter and TDP traffic, and control of the satellite link access. The ON-143(V)6/USQ interfaces with an AN/WSC-3(V) UHF satellite transceiver (via a TD-1271B/U DAMA unit, as required), a KG-36 or KG-84A crypto device (depending on the satellite network), another ON-143(V)6/ USQ (if installed), and various types of TDP systems. Operationally, surface ship and submarine platforms operate in a TADIXS receive only mode.


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Page last modified: 28-07-2011 00:51:18 ZULU