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Spectrum Management Considerations

Spectrum Management Considerations. Purpose – Enable maximum performance of electronic systems used during military operations Application – Must be planned and engineered into the system beginning in the first phases of acquisition . Applicable Pubs

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Spectrum Management Considerations

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  1. Spectrum Management Considerations • Purpose – Enable maximum performance of electronic systems used during military operations • Application – Must be planned and engineered into the system beginning in the first phases of acquisition. • Applicable Pubs • DoD Instruction 4650.01, DoD Use of the Electromagnetic Spectrum • Manual of Regulations and Procedures for Federal Radio Frequency Management (The Redbook) • DoD Directive 3222.3 DoD Electromagnetic Environmental Effects (E3) Program • ACP-190(C) Guide to Spectrum Management in Military Operations • ACP-194 Policy For The Coordination Of Military Electromagnetic Spectrum Allocations And Assignments Between Cooperating Nations • MIL-STD-461( ) – system EMI Requirements • MIL-STD-464( ) – Platform EMC Requirements • Forms • DD 1494 Application For Equipment Frequency Allocation

  2. Spectrum Supportability and E3 Relationship E3 SS SSRA E3 Assessment ESC HNC Access

  3. Spectrum Supportability Addresses the availability of sufficient electromagnetic spectrum for the development, training, and compatible operations of spectrum dependent systems in their intended operational environment.Spectrum supportability Risk Assessments are required by DoDI 4650.01 at Milestones Vision: All systems fielded can obtain spectrum assignments and operate in such a way as to provide the capability (to the warfighter) needed when the requirement was generated

  4. Spectrum Supportability Risk Assessment A Process, Not an Event Risk Identification Risk Tracking Risk Analysis Risk Mitigation Planning Risk Management Implementation • Risk Evaluation • Required on all Spectrum-Dependent systems. • Identify and assess EM spectrum and E3 issues affecting operational performance • Assessments and mitigation plans are reviewed at milestones

  5. The Congress The President The Judiciary US Spectrum ManagementHistory and Organization Communications Act of 1934 Designated Authority for Government Designated Authority for Non-Government National TelecommunicationsAndInformation Administration Federal CommunicationsCommission Coordination (Advisory) (Liaison) InterdepartmentRadio Advisory Committee(IRAC) NTIA chairsIRAC and theSubcommittees 20 GovernmentDepartments / Agencies and Members RadiocommunicationConferenceSubcommittee InternationalNotificationGroup Emergency Planning Subcommittee FrequencyAssignmentSubcommittee SpectrumPlanningSubcommittee SpaceSystemsSubcommittee Technical Subcommittee

  6. E3 Assessment Process Spectrum supportability and electromagnetic environmental effects assessment process.

  7. EMI and EMC Coupling Paths in a Simple Configuration

  8. EMI and EMC Coupling Paths in a Simple Configuration

  9. Mitigating EMI and EMC Problems Best Prevention is Prototype Testing so all parameters are known before production. If further EMI reduction is needed, these fixes will help. Bonding and Grounding of equipment, cable shields, spare conductors, metallic conduit, junction boxes, non-linear joints in vicinity of RF transmitters, etc. Separation of source and victim equipment, cables, etc. Ferrite Beads around conductors that are causing interference Filtering of power supplies, receive antenna transmission lines, modulation inputs, etc. Shielding of cables and conductors, enclosures, etc. Optimal Spectrum Management to be assigned the best frequency(ies), bandwidth, and modulation characteristics for the application.

  10. Mitigating EMI and EMC Problems Best Prevention is Prototype Testing so all parameters are known before production. If further EMI reduction is needed, these fixes will help. Bonding and Grounding of equipment, cable shields, spare conductors, metallic conduit, junction boxes, non-linear joints in vicinity of RF transmitters, etc. Separation of source and victim equipment, cables, etc. Ferrite Beads around conductors that are causing interference Filtering of power supplies, receive antenna transmission lines, modulation inputs, etc. Shielding of cables and conductors, enclosures, etc. Optimal Spectrum Management to be assigned the best frequency(ies), bandwidth, and modulation characteristics for the application.

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