R

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RD on Airborne Surveillance in Japan - As
another end of trajectory -

• Shigeru Ozeki, ENRI

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Contents

• Japanese Airspace
• Special considerations
• Possible ASA in Japan
• Expected benefit
• RD Activities in Japan
• Issues and some results of trials and simulations
  
• Future plan by JCAB
• Future plan for ENRI RD

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Japanese Airspace The Bundling Point
JCAB, MLIT, JAPAN
East end of Eurasia Continent
Parallel Air routes aligned to in-line islands
Shared by international and domestic FLTs
Stabilized flow to hub AP by ATFM Dep. Con.
NOPAC
Oceanic Airspace w/o GS
Earthquake, Volcano, Typhoon and Unstable wind
Airports on the shore with small and complex
airspace
Turbulence by monsoon and high mountain
FUKUOKA FIR
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Traffics in Japanese Airspace
About 1.7 times of traffic
Data from JCAB, MLIT, JAPAN
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Possible ASA in Japan
UNDER INVESTIGATION
Mitigation of the effect by local break down of
ATM

• Falling into disorder by natural and artificial
  reasons
• Less tolerant bundling airspace propagates the
  breakdown
• Improvements of ATM supports first, but not
  enough
• Low quality of input info. (When earthquake will
  happen ?)
• Expectation to ASA with new separation mode
• Shorter cycle time of ASA may permit shorter
  separation
• Wider tolerance is expected by shorter separation
  standard
• No-action or less action CP have less damage for
  trajectory
• ITP, ITF and ITM will give more options in
  oceanic airspace
• Less workload will give more chance to recover
  from disorder

Flexible Local Tactics may help global strategy
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Possible ASA in Japan
UNDER INVESTIGATION
Throughput, Fuel Efficiency and Mitigation means

• Needs to support the future traffic in Japanese
  airspace
• To increase the throughput of airspace,
  especially in hub area
• To improve the fuel efficiency and to reduce
  flight time
• Higher throughput and fuel efficiency by ASA, for
  example,
• ASA in oceanic airspace (ITP)
• Gate-to-gate optimization including en-route
  (ITM)
• Less separation at crossing for less impact to
  trajectory(CP)
• MS without waiting circle for ATFM environment
• Less workload by task sharing with GSA (Cluster
  control ITF)
• ASA to mitigate the risk
• Basic improvements of situation awareness (ATSA)
• Possible improvements with graphic HMI for ASA
  with CDTI CPDLC
• ATM compatible ACAS as another layer for
  safety-net

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AS RD in Japan ENRI
From Radio Engineering to System Studies

• Developments of BCAS since early 70
• Toyocom-ENRI projects with ATCRBS signals before
  mode S
• Toyocom-BCAS laid part of foundations of ACAS and
  TCAS
• Contribution to ACAS standardization in ICAO
• Flight test for signal compatibility in Japan
• Evaluating ACAS algorithm for its compatibility
  with airspace
• Operational monitoring activities
• Studies on ASA in addition to CAS applications
• Onboard measurement for 1030/1090 signal
  environment
• ADS-B experiments
• Exchanges at ICAO/ASP, RFG, ADAS-DUG and ASAS-TN

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Issues on 1090 Signal Environment
UNDER INVESTIGATION
Unexpected transmissions may degrade 1090 MHz
environment
Missing to detect this pulse
1030 MHz Receiver Log-Video Output
MTL
S. Ozeki, et. al. "WG-A Discussions on Reply
Failure to Low Power Interrogations",
SCRSP/WG-B/WP/B9-13, October, 2005
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RD in Japan FHI
For ATM compatible aircraft by SUBARU

• Fuji Heavy Industries, Aerospace Company
• Multi Clustered Air traffic Management (Pat.
  Pend)
• Viewing Aircraft as dynamic clusters
• Applications of optimal algorithm to trajectory
  search
• Integrate ASA with trajectory control (SM, VSA,
  ITF?)
• Presentation at ADAS-DUG meeting, Sep. 09
• Cooperated ASA/GSA with MCAM reduces
• HDG-CHG inst. in heavy traffic condition by 10-40
  
• FLT time in almost all condition by 10
• Works will be needed to improve the simulation
  model

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RD in Japan KHI-FURUNOJoint trial with
Kawasaki BK-117
Domestic ASA for Rescue mission and
Doctor-heli. trials
Data link Antennas
Display
Transceiver Processor
GPS Antenna
GPS Data link System
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JAXA NOCTARN (2001-2005)

• Research Objectives
• Construct self-organized trajectory-based
  operations system for small aircraft, and
  demonstrate by flight experiment with multiple
  aircraft.
• Operations Concept
• Based on shared state vector and intent
  (trajectory), approaching traffic are
  self-sequenced and separated without controller.
• The CDTI finds conflict-free trajectory and
  advices pilots. Once the trajectory is assigned,
  ref-speed is advised to keep separation.

Traffic Symbol
Information of Focused Traffic
Landing Sequence
Ownship
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JAXA NOCTARN Flight Test Results
Trajectory is modified to avoid excessive bank
angle by wind
Calm
North Wind
North wind
Wind calm
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Future plan in Japan JCAB
Words at ICAO meeting on SESAR and NextGEN, Sep.
2008

• Japan is ready to work with others in
  expectation of ICAOs leadership
• Japan is undergoing a development phase of
  Long-term Roadmap of Future Air Traffic Systems
  in 2025 to complete in 2010.
• Process involves stakeholders of operators,
  academy, manufacturers, research institutes as
  well as JCAB, based upon the ICAO Global ATM
  Operational Concept.

2010
2025
Planning
Implementations Evaluations
ATM operation
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Future plan for ENRI RD on ASA
2010
2025
Planning
Implementations Evaluations
ATM operation
JCAB
To develop RSP and to support ICAO SARPs
standardization To support the development for
ASA/ATM compatible ACAS
To support JCAB at planning and control of signal
usage incl. AS
2010
2022
Prep.
Mainly for ATSA
Monitoring and Improvements ?
Mainly for ASPA
ASA for ATM
ENRI
Signal Environment Measurement and Estimation
Monitoring and Improvements ?
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Conclusion

• Japan is ready to work proactively with others
  in expectation of ICAOs leadership (JCAB)
• Japan is undergoing a development phase of
  Long-term Roadmap of Future Air Traffic Systems
  in 2025 to complete in 2010(JCAB)
• RD activities are undergoing in Japan to prepare
  for ASA for domestic special mission and for
  global ATM implementation