ICAO Document 8071 - Nav Canada

ICAO Document 8071 -
Manual on Testing of
Radio Navigation Aids
L. Nelson Spohnheimer, US FAA
ICAO Nav Systems Panel

Darcy
Sun Conure
Introductory
Graphics
Sophie
Solomon Island Eclectus
Tootsie
Senegal

ICAO Doc 8071
• Contains ground and flight testing guidance
• Volume 1 -- Conventional navaids except
MLS, last published early 1970’s
• Volume 2 -- GNSS (SatNav)
– ABAS - Aircraft-Based Augmentation Systems
– SBAS -- Space-Based Augmentation Systems
– GBAS -- Ground-Based Augmentation Systems
• Separate Volume, unchanged -- MLS

Doc 8071 Study Group
• 1995 -- All Weather Operations Panel formed
TRNSG (Testing of Radio Navigation Aids Study
Group) to revise Doc 8071
– Initially 11 countries, 15 participants
• 2004 -- Navigation Systems Panel formed
CN&TSG (Conventional NavAids & Testing
Subgroup) to continue Doc 8071 work
– Membership expanded

Doc 8071 Meetings

TRNSG Meetings - Vol. 1
• TRNSG/1, Montreal, 10/95 -- conceptual
– Informal, IFIS, Braunschweig, 06/96 -- conceptual
• TRNSG/2, Montreal, 04/98
– Informal, IFIS, Seattle, 06/98
– Informal, Montreal, 01/99 - final editing meeting
• TRNSG/3, Montreal, 03/00 -- reviewed Vol 1, began
Volume 2, with major contribution from informal
SatNav group

TRNSG Meetings - Vol. 2
• TRNSG/3, Montreal, 03/00 -- began Volume 2
– Informal, IFIS, Santiago, June 2000
• TRNSG/4, Florida, 02/01,
• TRNSG5, Montreal, 03/02
– Informal, IFIS, Rome, 06/02
• TRNSG/5.5, Toulouse, 02/03 (GBAS Subgroup)
• TRNSG/6, Atlantic City, 08/03

CN&TSG Meetings - Vol. 1 & 2
• 1st Meeting, CN&TSG, Toulouse, 03/04
– Preparation for St. Petersburg NSP Meeting 05/04
– Review of outstanding issues with Doc 8071
• Conventional and SatNav
– Review of work items on conventional navaids
identified by TRNSG, 11 th ANC and NSP WG1:
• DME, VOR, ILS, MLS
• 2nd Meeting, CN&TSG, St. Petersburg, 05/04

Doc 8071 Volume 1
• “Testing of Ground-Based Radio Navigation
Systems”, 4th Edition published 2000
• Complete rewrite -- General Contents
– Ch 1 -- General,
– Ch 2 -- VOR
– Ch 3 -- DME
– Ch 4 -- ILS
– Ch 5 -- NDB
– Ch 6 -- Enroute Markers
– Ch 7 -- PAR
– Ch 8 -- Instrument Flight Procedures
– Appendix A -- ITU Recommendation ITU-R IL.1140, Nav Receiver
testing for FM Broadcast Immunity, 108-118 MHz.
– Appendix B -- ITU Recommendation ITU-R IS.1009-1, Compatibility
between FM Broadcast and Aeronautical Services, 108-137 MHz.
RFI
RFI

Changes to Volume 1
• Hazardously Misleading Information (HMI) --
5/01 ICAO State Letter
• New issues accumulated during Volume 2
meetings and discussions
– VOR Orbits
– ILS Flyability
– Calibration requirements for Marker Beacons
– Protection of Navaids from Multipath (e.g., Wind
Farms, Hangars, etc.)

Doc 8071 Volume 2
• “Testing of Satellite-Based Radio Navigation
Systems”, 4th Edition draft published 2002, Rome
IFIS, Chapters 1 and 2 only, with request for
comments
– Ch 1 -- General
• Attachment 1 -- Flight Inspection Aircraft
• Attachment 2 -- Documentation and Data Recording
• Attachment 3 -- (GNSS) Interference Issues
• Attachment 4 -- GNSS System Descriptions
RFI
– Ch 2 -- ABAS, Non-Precision Approach (NPA) Procedures

Doc 8071 Volume 2 Cont’d
• Ch 3 -- SBAS (Procedures), ready for publication. . .
• System Description
• Ground Testing
– System testing outside scope of 8071, to be performed by
service provider or host States
– Airport Survey Accuracy
– GNSS Interference Testing (covered in Chapter 1)
RFI
– Ground Test Requirements for SBAS Procedures & Final
Approach Segment Accuracy

Doc 8071 Volume 2 Cont’d
• Ch 3 SBAS Contents (cont’d)
• Airborne Testing (of SBAS Procedures)
– Pre-departure checks
– In-flight activities -- maneuvering, procedure validation,
interference RFI
– Reports and report forms
– Test equipment -- position-fixing system not required,
stand-alone SBAS receiver or FMS must have manual
entry capability, some parameter outputs recommended

Doc 8071 Volume 2 Cont’d
• Ch 4 -- GBAS, recognized incomplete, will be
updated after more experience, 2007 target date
• System Description
– Accuracy assessments on ground, in-flight optional
• Ground Testing
– Accuracy (statistical, procedure TBD, proposed 24 hours)
– Broadcast Signal-in-Space integrity parameters
– Ranging interference
– VHF Data Broadcast (VDB) Parameters
– Monitoring
RFI

Doc 8071 Volume 2 Cont’d
• Ch 4 GBAS Contents (cont’d)
• Airborne Testing
– Definition of when required (6 events)
– Pre-departure checks & In-flight activities (maneuvering,
procedure validation, interference, coverage, identification,
data content) RFI
– Position accuracy (optional, position-fixing required)
– Charts and reports
Details
– Test equipment (receiver appropriate for phase of flight, with
modifications (e.g., operate in test mode, parameter outputs), positionfixing
system for Cat II/III, data logging equipment

Future Work Plan for CN&TSG
• Update and maintenance of Doc 8071
• Review and update of SARPs for conventional
navaids
• Review and update of guidance material for
conventional navaids
• RNAV – including update to SARPs to support
application of DME in RNAV operations
• Next (NSP) meeting – October 2004, Montreal

End -- Doc 8071 Update
Thank you for listening!
Questions?
Next Speaker -- Alessandro Capretti,
Technical Officer
ICAO CNS Section
Topic: RFI
Next

End -- Doc 8071 Update
Thank you for listening!
Questions?
Next Speaker -- Alessandro Capretti,
Technical Officer
ICAO CNS Section
Topic: RFI

End -- Doc 8071 Update
Thank you for listening!
Questions?
Next Speaker -- Alessandro Capretti,
Technical Officer
ICAO CNS Section
Topic: RFI

SBAS Flight Testing Requirements
• Prior to commissioning, each runway served and each approach
• If interference reported/suspected and ground testing cannot confirm
elimination of the source RFI
• If procedure modified or new procedure introduced
• If changes to GBAS config occur such as the location of the GBAS
ground subsystem antenna phase-center, the location of the data link
transmit antenna, or the system database
• If site changes occur with potential to impact GNSS signal reception and
data broadcast transmission
• Following certain maintenance activities
• If periodic flight tests are desired, parameters and intervals will be
determined by individual states Back

SBAS Flight Testing Requirements
• Prior to commissioning, each runway served and each approach
• If interference reported/suspected and ground testing cannot confirm
elimination of the source RFI
• If procedure modified or new procedure introduced
• If changes to GBAS config occur such as the location of the GBAS
ground subsystem antenna phase-center, the location of the data link
transmit antenna, or the system database
• If site changes occur with potential to impact GNSS signal reception and
data broadcast transmission
• Following certain maintenance activities
• If periodic flight tests are desired, parameters and intervals will be
determined by individual states Back

SBAS Flight Testing Requirements
• Prior to commissioning, each runway served and each approach
• If interference reported/suspected and ground testing cannot confirm
elimination of the source RFI
• If procedure modified or new procedure introduced
• If changes to GBAS config occur such as the location of the GBAS
ground subsystem antenna phase-center, the location of the data link
transmit antenna, or the system database
• If site changes occur with potential to impact GNSS signal reception and
data broadcast transmission
• Following certain maintenance activities
• If periodic flight tests are desired, parameters and intervals will be
determined by individual states Back