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Department of Defense Directive 4650.05: Positioning, Navigation, and Timing (PNT) Overview

Learn about the revisions and key responsibilities outlined in the DoDD 4650.05 for PNT. This directive establishes DoD policy, procedures, and responsibilities for PNT, expanding upon previous directives. Understand the significant changes, roles, and oversight outlined within this directive.

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Department of Defense Directive 4650.05: Positioning, Navigation, and Timing (PNT) Overview

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  1. Department of Defense Directive 4650.05 (DoDD 4650.05)Positioning, Navigation, and Timing (PNT) Dr. Steven Huybrechts Director, Space Systems Briefing to NPEC Advisory Board March 27, 2008

  2. Background • DoDD 4650.5 originally published in 1981 • Assigned ASD(C3I) (now ASD(NII)/DoD CIO) overall responsibility for DoD Pos/Nav (now PNT) policy & oversight • Revisions were issued in 1990, 2003, and 2008 (as 4650.05) • Establishes DoD policy, procedures, and responsibilities for Positioning, Navigation, and Timing (PNT) • Delineates specific PNT responsibilities expanding upon DoDD 5144.1 “ASD(NII)/DoD CIO” • Most recent revision was initiated to take account of: • Realignments among Department organizations • December 2004 US Space-Based Positioning, Navigation, and Timing Presidential Directive • June 2006 Deputy Secretary of Defense Memorandum “Global Positioning System (GPS) Responsibilities” • Responding to Defense Science Board recommendation for clarification of Department PNT oversight responsibilities

  3. Highlights of Major Revisions • Designates ASD(NII)/DoD CIO as Office of the Secretary of Defense Principal Staff Assistant (OSD PSA) to oversee PNT policy and for all aspects of GPS • No impact on AF authorities for GPS acquisition and operation • Adds ASD(NII)/CIO responsibilities for: • Policy related to Navigation Warfare (Navwar) • Approval/publication of Precise Positioning Service Performance Standard (PPS PS) • Oversight on behalf of DoD of the interagency National PNT Architecture effort • Guidance and direction for implementation of DoD elements • Participation in National PNT ExCom activities (IAW NSPD)

  4. Highlights of Major Revisions (cont.) • Adds responsibilities for new participants • USD(I), NGA, DIA, and USSTRATCOM • Assigns Secretary of the Navy responsibility (executed through USNO) for development and maintenance of earth orientation parameters and celestial reference frame • Assigns Secretary of the Air Force responsibility for support to NII in radio spectrum-related efforts and development of PPS PS

  5. Associated Department of Defense Instruction (DODI) • Earlier versions of the Directive included PNT Excom and WG guidance more appropriate for an Instruction • Now separated in this version • Instructions are subordinate to Directives – provide detailed implementation guidance • DODI content • Detail membership, functions, and processes of the DoD PNT Excom, PNT WG, and Navwar WG • Facilitate integration with new Joint Network Operations (JNO) requirements process for future budget development/execution • Draft now in PNT WG/Excom coordination

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