UK Frequency Clearance Programme

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UK Frequency Clearance Programme

• Oliver Parker
• TDL 13

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CONTENT

• Where are we now
• Future network requirements
• Future FCA Strategy
• Strategy Support Programme
• Programme Risks

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UK FCA ISSUE 6

• Effective form 4th September 2004
• Unambiguous compared to FCA 5
• Defines roles and responsibilities (MOD/CAA)
• Defines procedures
• Limits network capacity
• Restricts use of JTIDS functionality
• Protection zones around DME, SSR and Protected
  Airspace

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UK FCA ISSUE 6

• Presented in logical Sections
• Section 2 Clearance to operate in UK
• Section 3 FCA Management Structure
• Section 4 Restrictions
• Section 5 Waiver Process
• Section 6 Compliance Monitoring
• Annex A Cleared Terminals/Platforms
• Annex B Cleared Sites
• Annexes C, D, E List of SSR, DMEs and Protected
  Airspace
• Annex K Points of Contact

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Network Requirement

• Current UK FCA restrictive
• Limited to single (100) network
• Not aligned with neighbouring nations FCA
• Increasing numbers of UK platforms
• Typhoon, Tornado GR4, Harrier GR9, Nimrod MRA4,
  T42, CVS, T45, Tankers, AMRAP/GRAP.
• Increasing numbers of visiting platforms
• F-16, Typhoon, F-15, Rafale, USN.
• Increasing requirements for cross-border
  operations

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STRATEGY
Sep 03
April 04
April 05
April 06
April 07
April 08
FCA 6
Future FCA Initiatives
Monitor Testing
CAA Review Periods
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PH. 1 SYNCHRONOUS GEO AREA

• No Contention Access
• No RTT-B
• No Time Slot Re-use within the GeoArea
• No Stacked nets within GeoArea unless utilizing
  discrete time slots
• No multiple networks unless separated by
  Boundary Zone

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SYNCHRONOUS GEO AREA WIDE AREA STRN
C2(C)
Single, wide-area network. No Contention,
444-pulse messages, RTT-B or multi-networks
C2(A)
Basic(2)
Ftr(1)
C2(B)
Ftr(2)
Ftr(3)
Ftr(5)
Ftr(6)
Ftr(4)
C2(D)
Ftr(8)
Basic(1)
Ftr(7)
C2(C)
C2(B)
C2(A)
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SYNCHRONOUS GEO AREA NETWORK SEPARATION
C2(C)
C2(A)
Basic(2)
Ftr(1)
C2(B)
Ftr(2)
Ftr(6) Silent
Ftr(3)
Ftr(5) Silent
Ftr(4)
Network Boundary Zone
Ftr(8)
Basic(1) Silent
Ftr(7)
C2(C)
C2(B)
C2(A)
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PH. 2 ASYNCHRONOUS GEO AREA

• Contention Access
• RTT-B
• Re-use of time slots within the Geo Area
• Stacked nets
• Multiple networks
• Greatly Enhanced Operational Freedom

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ASYNCHRONOUS GEO AREA MULTIPLE NETWORKS
C2(C)
C2(A)
Basic(2)
Ftr(1)
C2(B)
Ftr(2)
Ftr(6)
Ftr(3)
Ftr(5)
Ftr(4)
Ftr(8)
Basic(1)
Ftr(7)
C2(C)
C2(B)
C2(A)
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Strategy Support Programme

• Key Personnel
• CAA
• DPA
• QinetiQ
• BAE Systems
• International Support

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Strategy Support Programme

• CAA Review of initiatives
• Technical Cases
• Supported by Historical Test Data
• Supported by German Geographical area concept
• Technical papers presented to MNWG
• New Testing as Required
• Cross-border Co-ordination
• Programme of Beacon Monitoring

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Cross Border Co-ordination

• Mandated by the CAA
• Subject of Workshop 4 of the EJCC
• UK working closely with Germany to achieve this
• Key to achieving and managing Geographical Area
  Operations

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Beacon Monitoring Tool

• Initial Requirement
• UK CAA lacked confidence in Manufactures stated
  values for DME reply Efficiency and Sensitivity
• Tool Required to measure these values
• QinetiQ tasked to develop a Beacon Monitoring
  Tool.
• Results of BMT testing to support relaxations to
  the FCA.

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Principal of a Beacon Monitoring Tool

• Two Channel System
• Channel 1 records DME Interrogations
• Channel 2 records DME under test replies.
• Two data sets streamed together and analysed to
  produce value for DME reply efficiency.
• Receiver sensitivity set to that of DME under test

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JTIDS Assurance Facility (JAF)
DME
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JAF Capabilities

• Ability to measure DME reply efficiency
• Time Stamping allows event monitoring
• Interrogations, replies and JTIDS pulses can be
  measured and analysed at the same time

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JAF Capabilities

• Artificial JTIDS signal can be fed into Dummy DME
  and the effects recorded and analysed in relation
  to the UUT
• Effect of JTIDS on the DME can be quantified,
  regardless of DME reply efficiency.
• JAF can record and analyse data from UUT video
  output to validate results

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JAF Findings

• Over a given time period, the percentage effect
  of JTIDS activity can be recorded.
• Results should allow relaxations to the FCA to be
  applied for based on documented field data.
• JAF or BMT will provide UK MOD with additional
  compliance monitoring capability

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FCA Programme Risks

• Aggressive Programme
• Ability to monitor RF environment
• Relies on agreement from the CAA
• Monitoring may not provide the desired results
• Technical Support case may prove inconclusive or
  unacceptable

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Questions?