PowerPoint Presentation
Salient issues in ITU-R Study Group 3 and its Working Parties
Carol Wilson
Chairman, ITU-R Study Group 3
Contents
• Scope and Working Parties
• Building entry loss (BEL)
• Clutter loss
• HAPS/HIBS activity
• Extending the upper frequency limit for short range
propagation methods
• Software, data and validation examples
• Participation welcomed by all ITU-R members
Scope of work and structure
• Scope: “Propagation of radio waves in ionized and non-ionized media and the characteristics of radio noise, for the purpose of improving radiocommunication
systems.” (...) WRC-23 AIs 1.1, 1.2, 1.4, 1.5, 1.18, 9.1 c and
potentially more)
• Need to develop site-specific model, potentially other building types,
and to consider in combination with clutter loss
• Intersessional work: CG 3J-3K-3M-8 – Chairman: Richard RUDD (G)
https://extranet.itu.int/rsg-meetings/sg3/wp3j/cg3j3k3m8/SitePages/Home.aspx
Clutter loss
• Rec. ITU-R P.2108 – Prediction of clutter loss (0.03-100 GHz)
• Rep. ITU-R P.2402 - method to predict the statistics of clutter loss for
earth-space and aeronautical paths
• Relevant to all WRC-23 agenda items where one or both terminals are
immersed in local clutter (e.g.
Language:English
Score: 1536872.1
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https://www.itu.int/bestofwrs/...es/4/2021/04/P3.-WRS20_SG3.pdf
Data Source: un
RECOMMENDATIONS ON TECHNICAL REQUIREMENTS FOR ELECTRONIC NAVIGATIONAL SHIPBORNE EQUIPMENT AND ITS INSTALLATION ON BOARD SHIPS, INCLUDING IN PARTICULAR RADAR INSTALLATIONS AND RATE-OF-TURN INDICATORS / TRANSMITTED BY THE DANUBE COMMISSION
Facilities for reducing sea and rain clutter
1.14.1. The radar equipment shall have facilities with manual controls for
reducing clutter from meteorological causes (sea and rain).
1.14.2. (...) At least the controls for gain, sea-clutter
suppression and rain-clutter suppression must be adjustable by means
of rotary knobs, the effect of which shall be roughly proportional to
the angle of rotation.
2.4.14. (...) The gain
must be adjusted in such a way that, in the area immediately beyond
the range of operation of the anti-clutter control, noise can no
longer be seen.
The sea-clutter suppression control (STC) shall be set at minimum,
while the rain-clutter suppression control (FTC) shall be switched
off.
Language:English
Score: 1436087.9
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daccess-ods.un.org/acce...DS=TRANS/SC.3/WP.3/R.68&Lang=E
Data Source: ods
GE.09-25650
UNI
Article 3.09
Facilities for reducing sea and rain clutter
1. The radar equipment shall have facilities with manual controls for reducing clutter from
sea and rain.
2. The sea-clutter control (sensitivity time control — STC) shall, at its maximum setting, be
effective up to a distance of approximately 1 200 m.
3. (...) At least the controls for gain, sea clutter and rain clutter must be adjustable by means of a
rotary control with an effect proportional to the angle of rotation.
6.
Language:English
Score: 1422434.4
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daccess-ods.un.org/acce.../TRANS/SC.3/WP.3/2010/5&Lang=E
Data Source: ods
RECOMMENDATIONS ON TECHNICAL REQUIREMENTS FOR ELECTRONIC NAVIGATIONAL SHIPBORNE EQUIPMENT AND ITS INSTALLATION ON BOARD SHIPS, INCLUDING, IN PARTICULAR, RADAR INSTALLATIONS AND RATE-OF-TURN INDICATORS / TRANSMITTED BY THE GOVERNMENT OF THE RUSSIAN FEDERATION
Reduction of sea and rain clutter Manual control; automatic control
optional.
Bearing facilities Electronic, capable of taking
bearings in 5 secs, permissible
error 1 , or mechanical, rotatableo
through 360o
Emission frequency 9 GHz (3.2 cm) or 33.2 GHz (9 mm);
from 2015, only 33.2 GHz (9 mm) 1
Warm-up time, mins 4
Minimum antenna speed, rpm 18; the antenna must be capable of
operating at a relative wind speed
of 50 m/sec
Reduction of interference from Signals from radar beacons in
other radar equipment. accordance with IMO resolution
Compatibility with radar beacons A.423 (XI) must be clearly
displayed on the screen even when
the wave and atmospheric
precipitation clutter suppression
(FTC) is switched off.
TRANS/SC.3/WP.3/1998/20
page 4
2.
Language:English
Score: 1299018
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daccess-ods.un.org/acce...TRANS/SC.3/WP.3/1998/20&Lang=E
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We should pick one or two key areas we want to advance and not clutter up the statement with a reiteration the content of previous statements.
• Putting forests on the global agenda as important for meaningful and sustainable development o What we mean by that: forests need to be seen as part of the Natural Solutions
narrative that is increasingly being taken up in international fora.
• Working with the agriculture sector and have a meaningful joint dialogue at UNFF 16- o What we mean by that: we need to make a commitment to working with another land
use sector so that we can bring the UNSPF into those areas where it has the potential for strong impact.
Language:English
Score: 1222661.7
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https://www.un.org/esa/forests.../2019/11/UNFF15-HLS-Canada.pdf
Data Source: un
PROPOSED CHANGES TO ANNEX 1
However, it illustrates how the information in the tables could be
provided in a clearer, simpler and less cluttered format.
iii. The second sentence in the note beneath Table A1.1 starting with
“The pictogram for Divisions…” provides unnecessary information
that the informal working group considered should be deleted on the
basis that the table notes do not normally referred to other tables
where the same or similar pictograms are used.
(...) Merger (where this aids greater clarity) of identical text or pictograms
in adjacent table entries, provides a less cluttered presentation of
information in the tables and enables easier access to relevant
classification and labelling information for the labelling practitioner;
iii.
Language:English
Score: 1221576
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https://daccess-ods.un.org/acc...=ST/SG/AC.10/C.4/2019/2&Lang=E
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CURRENT AND FUTURE TECHNOLOGY FOR MOTAPM DETECTION AND CLEARANCE : PRESENTATION / PREPARED BY THE UNITED NATIONS MINE ACTION SERVICE (UNMAS)
Many false alarms, especially in
areas with metal clutter, like former
battlefields.
MOTAPM fitted with anti-handling
devices or sensitive fuzes present a
danger to deminers.
(...) C
C
W
/G
G
E/V
II/W
G
.2/W
P.4
Page 4
Ground-penetrating
radar
Reflects radio waves
of mine/soil interface
Detects all anomalies, even if
nonmetal
Performance negatively affected by
roots, rocks, water pockets, other
natural clutter; extremely moist or
dry environments
Better suited to detect layers than
specific objects
Higher costs than metal detectors
More difficult to handle than metal
detectors
GPR as stand-alone
system does not
currently provide the
clearance reliability
required.
Language:English
Score: 1179389.8
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daccess-ods.un.org/acce...S=CCW/GGE/VII/WG.2/WP.4&Lang=E
Data Source: ods
Unfortunately, none of the standard video test sequences are very good for showing this effect, so we selected a non-standard test sequence, “clutter,” to illustrate the technique. This sequence begins with approximately 40 frames of still background. (...) Eventually, the motion settles down to a more reasonable amount.
The “clutter” sequence was coded using all QCIF, all CIF, and dynamic resolutions.
Language:English
Score: 1142678.6
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https://www.itu.int/wftp3/av-a...ideo-site/9611_Atl/resamp1.doc
Data Source: un
Unfortunately, none of the standard video test sequences are very good for showing this effect, so we selected a non-standard test sequence, “clutter,” to illustrate the technique. This sequence begins with approximately 40 frames of still background. (...) Eventually, the motion settles down to a more reasonable amount.
The “clutter” sequence was coded using all QCIF, all CIF, and dynamic resolutions.
Language:English
Score: 1142678.6
-
https://www.itu.int/wftp3/av-a...deo-site/9611_Atl/lbc96325.doc
Data Source: un
AIRAC
Trigger NOTAM • Publication timeframe before effective date:
• 1 AIRAC cycle
• 14 days
• 7 days
• 1 day
• Issued on effective date
• Q-code
• QAOXX
• QAOTT
• Key words
• POSTPONED
• CANCELLED
7
AIP • Paper publications
• Frequency of amendments
• Lack of cover sheets
• Lack coordination with neighboring
states
• Language
• Inconsistent update of repeated
data
8
NOTAM
9
Expired EST
Old / very old
Predictability
Language Ambiguity
Abbreviatio ns
Non- NOTAM
information Q-codes
Multi subject
Multi-part numbering
Extended text
Clutter
Communicate
Collaborate
Comply
AFI AIM Action Group multi-stakeholder
collaboration
engagements between partners
identify and address
• availability,
• deficiencies
• publication
Reports to:
• All participants
• APIRG IIM SG
• CANSO ATM WG
• IATA AFI RCG
AIMAG collaboration platform
• MS Teams Team
IATA
ICAO
IFAIMA
CANSO
AFI Civil Aviation
Authorities
AFI Air Navigation
Service Providers
Data Users
Organizations
12
Quality In
Quality Out
AIMing Together Towards Excellence
13
Thank you
Lindi-Lee Kirkman
Manager Safety Flight Operations
Africa & Middle East
Kirkmanl@iata.org
Language:English
Score: 1134955.1
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https://www.icao.int/WACAF/Doc...ated%20to%20NOTAM%20-%20EN.pdf
Data Source: un
