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Introduction to Milstar

2. Introduction. HistoryLaunch DatesSegmentsSubsystemsPriority RekeysCrosslinks. 3. Milstar Specifications . Primary function: Global military communications system Primary contractor: Lockheed Martin Missiles and Space Power plant: Solar panels generating 8,000 watts Weight: About 10,000 pounds (4,536 kilograms) Orbit altitude: 22,250 nautical miles (geosynchronous orbit) Launch vehicle: Titan IVB/Centaur upper stage Inventory: 5 Unit Cost: $800 million .

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Introduction to Milstar

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    1. 1

    2. 2 Introduction History Launch Dates Segments Subsystems Priority Rekeys Crosslinks

    3. 3 Milstar Specifications Primary function: Global military communications system Primary contractor: Lockheed Martin Missiles and Space Power plant: Solar panels generating 8,000 watts Weight: About 10,000 pounds (4,536 kilograms) Orbit altitude: 22,250 nautical miles (geosynchronous orbit) Launch vehicle: Titan IVB/Centaur upper stage Inventory: 5 Unit Cost: $800 million

    4. 4 History of Milstar Originally named “Military Strategic and Tactical Relay satellite”, later designated Milstar Milstar was conceived during the cold war to provide a nuclear hardened platform for secure communications worldwide The mission of Milstar is to provide our nation’s warfighters with global, secure, survivable strategic and tactical communications throughout the full spectrum of conflict. The application console is easy to use --- a basic desktop application.The application console is easy to use --- a basic desktop application.

    5. 5 History of Milstar (Cont) The $31 billion Milstar satellite system is operated by the 4th Space Operations Squadron (4 SOPS) 4 SOPS was activated on 30 April 1992 The first Milstar satellite was launched on 7 February 1994

    6. 6 7 February 1994 – Milstar Flight 1 6 November 1995 – Milstar Flight 2 30 April 1999 – Milstar Flight 3* 27 February 2001 – Milstar Flight 4 15 January 2002 – Milstar Flight 5 8 April 2003 – Milstar Flight 6 *vehicle in an unusable orbit This lesson will cover the Application Console – or “Desktop” of CCS-C operations. The options available to you --- the user. And the “how to” on Switch SOC operations.This lesson will cover the Application Console – or “Desktop” of CCS-C operations. The options available to you --- the user. And the “how to” on Switch SOC operations.

    7. 7 Launch Platform

    8. 8 Milstar System Segments The Milstar System consists of three segments: Terminal Segment (users) Space Segment (satellites) Mission Control Segment (MCS)

    9. 9 Terminal Segment Milstar terminals are installed in aircraft, ground transportable units, submarines, surface ships, and at fixed ground sites. Terminals provide encrypted communications in the form of voice, teletype, facsimile or data. Milstar offers users several types of generic communication services

    10. 10 Air Force

    11. 11 Army

    12. 12 Navy & Marine Corps

    13. 13 Milstar Subsystems - Payload COMSEC/TRANSEC Subsystem (CTS) Crosslink Subsystem (XLS) Extremely High Frequency (EHF) Payload Management Subsystem (PMS) Super High Frequency (SHF) Ultra High Frequency (UHF) Time & Frequency Reference (TFRS) Note that when an operator switches SOCs, they should always switch back to the original SOC upon completion unless there is some other squadron CONOPS or the workstation is designated as the “Alternate SOC” workstation. Otherwise, any operator will log on and possibly think they are viewing the Primary SOC, but they are really viewing the Alternate SOC. Also note that this function is not currently operable…still TBD on when it will come online.Note that when an operator switches SOCs, they should always switch back to the original SOC upon completion unless there is some other squadron CONOPS or the workstation is designated as the “Alternate SOC” workstation. Otherwise, any operator will log on and possibly think they are viewing the Primary SOC, but they are really viewing the Alternate SOC. Also note that this function is not currently operable…still TBD on when it will come online.

    14. 14 Milstar Subsystems - Spacecraft Auxiliary Propulsion Subsystem (APS) Data Processing Subsystem (DPS) Electrical Power & Distribution Subsystem (EPDS) Stabilization & Control Subsystem (SCS) Structures and Mechanism Subsystem (SMS) Telemetry, Tracking, & Commanding (TT&C) Thermal Control Subsystem (TCS)

    15. 15 Priority Rekey The purpose of priority rekey is to provide COMSEC and TRANSEC Keys to priority users Priority users include: Special Users (i.e. White House, Special Operations), Strategic Aircraft (i.e. B2 Spirit), and Nuclear Submarines Priority users often have a finite period of time to remain exposed and need keys quickly For the Satellite tab, the operator can change overarching information about a particular satellite.For the Satellite tab, the operator can change overarching information about a particular satellite.

    16. 16 Crosslinks and Milstar

    17. 17 Crosslinks The crosslink subsystem transmits on a sub-channel in the 60 GHz band Crosslink operations frequencies are absorbed by Earth's atmosphere, preventing detection by Earth-based ground stations. To avoid interference a different frequency is used for reception than that used for transmission.

    18. 18 Crosslinks A constellation can have two different crosslink topologies, a string or a ring.

    19. 19 Summary History Launch Dates Segments Subsystems Keys Crosslinks

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    21. 21 References www.af.mil Subject matter experts stationed at Schriever AFB, CO

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