Communication and Outreach Branch
of Geodesy and Surveying
University of Technology and Economics
H-1521 Budapest, Hungary
Information Service of the International Association of
27th IUGG General Assembly, Montreal,
Canada, July 8 – 18, 2019
Absolute Gravity Network – Costa Rica
Honorary volume of Athanasios Dermanis
Advances in Space Research – promotional
IAG Sponsored Meetings
24th Meeting of
the European VLBI Group for Geodesy and Astronomy (EVGA) and 18th IVS Analysis
Training School on VLBI for Geodesy and Astrometry
International Symposium on Deformation Monitoring (JISDM)
Sensing Symposium 2019 (MRSS19)
Symposium on Terrestrial Gravimetry: Static and Mobile Measurements
IAG Related Meetings
'Global Navigation Satellite System (GNSS)'
Satellite Navigation Summit 2019
Workshop "Spacetime Metrology, Clocks and Relativistic Geodesy"
Positioning, Navigation and Timing (PNT) Conference
Living Planet Symposium
Summit Week 2019
International School on “Geoid Modelling, Gravity Inversion and its
of the Committee on Space Research (COSPAR)
21st International Workshop on Laser
Ranging – Workshop Summary
The IAG Newsletter is under the
editorial responsibility of the Communication and Outreach Branch (COB)
of the IAG.
It is an open
forum and contributors are welcome to send material (preferably in electronic
form) to the IAG COB (firstname.lastname@example.org). These contributions should complement
information sent by IAG officials or by IAG symposia organizers (reports and
announcements). The IAG Newsletter is published monthly. It is
available in different formats from the IAG new internet site: http://www.iag-aig.org
Newsletter includes several of the following topics:
news from the Bureau
reports of IAG symposia
commissions, special commissions or study groups
VII. fast bibliography
The International Union of Geodesy and
Geophysics (IUGG) holds its 27th General Assembly from July 8 to 18,
2019 in Montreal, Canada. The general assembly theme is the celebration of the
centennial of the IUGG establishment in Brussels, Belgium, in 1919.
IUGG holds its
General Assemblies every four years. Traditionally, the eight constituent
associations of IUGG (Cryospheric Sciences, IACS; Geodesy, IAG; Geomagnetism
and Aeronomy, IAGA;
Hydrological Sciences, IAHS; Meteorology
and Atmospheric Sciences, IAMAS; Physical Sciences of the Ocean, IAPSO;
Seismology and Physics of the Earth's Interior, IASPEI; and Volcanology and
Chemistry of the Earth's Interior, IAVCEI) arrange their General Assemblies in
parallel with the IUGG. This enables to hold joint inter-association symposia
besides the specific association symposia and a greater involvement in the IUGG
There will be
nine Union Symposia organized by IUGG and each of the associations in
cooperation with the IUGG Commissions (Climatic and Environmental Changes,
CCEC; Mathematical Geophysics, CMG; Geophysical Risk and Sustainability, GRC;
Study of the Earth's Deep Interior, SEDI; Data and Information, UCDI; Planetary
Sciences, UCPS), the IUGG Working Group on History (WGH), and the Global
Geodetic Observing System (GGOS).
- U1 - Achieving Sustainable
Development: The Role for Earth Sciences (IACS, CCEC),
- U2 - Georisk
Reduction: Science, Resources, and Governmental Action (IAVCEI, GRC),
- U3 - Mathematics
of Planet Earth: The Science of Data (IASPEI, CMG),
- U4 - Data-driven
Science for Earth and Space Exploration (IAPSO, UCDI),
- U5 - New
Discoveries in Earth Deep Interior (IAGA, SEDI),
- U6 - Recent
Advances and Discoveries in Planetary Science and Comparative Planetology
- U7 - Centennial
of the International Cooperation in Earth Sciences (IAHS, WGH),
- U8 - Earth and
Space Observations (IAG, GGOS),
- U9 - Celebrating
Early Career Scientists (IUGG).
In addition, there will be nine Union
Lectures given in three special sessions by representatives of the IUGG and
David Grimes (IUGG): Earth Sciences as the
Underlying Pillars to Meet Societal Challenges in the next Century;
Waleed Abdalati (IACS): Exploring and
Understanding Earth from Space: The Power of Perspective;
Kosuke Heki (IAG): No geodesy, no geophysics;
Lisa Tauxe (IAGA): Hunting the magnetic field;
Veena Srinivasan (IAHS): Understanding and
transforming water conflicts in the Anthropocene;
Ed Hawkins (IAMAS): The value of rescuing
millions of lost historical weather observations using volunteer citizen
Karen Kohfeld (IAPSO): The Ocean’s Role in
Atmospheric Carbon Dioxide Changes During Ice Age Cycles;
Vera Schlindwein (IASPEI): Singing seismograms –
harmonic tremor signals in seismological records;
Paolo Papele (IAVCEI): Volcanic giants - what we
know, what we think we know, what we can’t know about cataclysmic
The joint symposia are always led by an
association with co-conveners from other associations. IAG has the lead of the
following Inter-Association Symposia:
JG01 - Interactions of Solid Earth, Ice Sheets
JG02 - Theory and Methods of Potential Fields;
JG03 - Near-Real Time Monitoring of Regional to
Global Scale Water Mass Changes;
JG04 - Geodesy for Atmospheric and Hydrospheric
JG05 - Remote Sensing and Modelling of the
JG06 - Monitoring Sea Level Changes by Satellite
and In-Situ Measurements;
JG07 - Monitoring, Imaging and Mapping of
JG08 - Earth Systems Literacy: Geophysics
in K-16 Class Rooms, Outreach Projects, and Citizen Science Research Projects;
and IAG is sponsoring (with IAG
co-conveners) the following Inter-Association Symposia led by other
JA01 - Geophysical Constraints on the Earth's
Core and Its Relation to the Mantle;
JA02 - Geophysical Data Assimilation;
JA03 - Geophysical Records of Tectonic and
JA06 - Space Weather Throughout the Solar
System: Bringing Data and Models Together;
JA07 - Geoscience Data Licensing, Production,
Publication, and Citation (IAGA);
JA08 - Probing the Earth’s Lithosphere and Its
Dynamics Using Geophysical Modeling;
JH02 - Climate and Hydrological Services:
Bridging from Science to Practice and Adaptation;
JP01 - Tides of the Oceans, Atmosphere, Solid
Earth, Lakes and Planets;
JS01 – Cryoseismology;
JS02 - Early Warning Systems for Geohazards;
JS03 - Subduction Zone Deformation and
Structure: Tracking the Sea Floor in Motion;
JS04 - Seismo – Geodesy;
JS05 - Probabilistic & Statistical
Approaches in Geosciences;
JS06 - Old Data for New Knowledge: Preservation
and Utilization of Historical Data in the Geosciences;
JS07 - Integrated Geophysical Programs for Earth
JV03 - Strain Localisation and Seismic Hazards.
The IAG specific symposia are the main
issue of the IAG General Assembly:
G01 - Reference Systems and Frames;
G02 - Static Gravity Field and Height Systems;
G03 - Time-variable Gravity Field;
G04 - Earth Rotation and Geodynamics;
G05 - Multi-signal Positioning, Remote Sensing
G06 - Monitoring and Understanding the Dynamic
Earth with Geodetic Observations.
For all details of the symposia
descriptions and the program, please visit the IUGG2019 Homepage (http://iugg2019montreal.com/). The most important deadlines are:
March 1, 2019: Closing of
March 1, 2019: Closing of
Grant application submission;
March 30, 2019: Abstract acceptance sent to
April 5, 2019: Early-bird registration closes.
IAG invites all geodesists to participate
in the General Assembly 2019 and to present their work in one of the symposia.
We look forward to seeing you in Montreal!
University of São Paulo, Polythecnic
School, Department of Engineering Transportation (EPUSP-PTR) supported by
Institute of Geography and Cartography (IGC) of São Paulo and Centro de
Estudos de Geodesia (CENEGEO) and the University of Costa Rica, Faculty of
Surveying Engineering and Instituto Geográfico Nacional (IGN), Costa Rica,
cooperated for the establishment of the Absolute Gravity Network in the
country. A total of 18 stations have been observed. The measurements have been
undertaken with A-10 Micro-g LaCoste absolute gravitymeter, number 032. The
stations are identified by the name of the city as follow: San José (UCR),
Pavas (TOBI), San José (EITL), Heredia (GTCG), Cerro Buenavista (CDMT), Buenos
Aires (BURE), Golfito (UCRG), Quepos (QUEP), Esparza (ESPA), Nicoya (UNAN),
Liberia (LIBE), Santa Rosa (PNSR), Tilarán (TILA), Los Chiles (CHIL), Turialba
(UCRT), Limon (UCRL), Sarapiqui (SARA), Gandoca (RGMO). The figure shows the
distribution of the stations in the country. The final results are under
analysis and they will be published very soon. But, it is already known that
the Standard Deviation (S.D.) of the network, in most of the stations, are
between 10 to 12 µGal. This network will be a contribution for the
International Global Absolute Reference Frame (IAGRF). The following people
participated to the efforts for the measurements: Denizar Blitzkow and Ana
Cristina O. Cancoro de Matos from CENEGEO; Iuri Bjorkstrom and Valéria Cristina
Silva, from University of São Paulo; Oscar H. Lucke, Juan Antonio Picado
Salvatierra, Jaime Garbanzo Leon, Alonso Vega Fernandez from University of
Costa Rica, Álvaro Álvarez Calderón from the National Geographical Institute of
In the past two important efforts have been
experienced in Costa Rica. In the first case, IGSN71 efforts set up two gravity
reference stations. One of the sites was located in the Central Park of the
capital city of San José. The other site was placed in the coastal city of
Puntarenas. This last one is important since it is near the site of the tide
gauge used to establish the mean sea level, which was a height reference for
the original geodetic network of Costa Rica.
After IGSN71, the geophysics commission of the
Pan-American Institute for Geography and History formed a group called the
Latin-American Gravity Informative System (known as SILAG for its initials in
Spanish) with support of the Inter-American Geodetic Survey (IAGS), at that
time. This group, with support of the individual geographical institutes of the
nations involved, implemented a project called Latin-American Network for the Normalization
of Gravity 1977 (known as RELANG77 for its initials in Spanish). This project
created a network of gravity reference stations through relative gravity
observations based on the IGSN71 values. For Costa Rica, RELANG created eight
gravity reference stations.
Moreover, Costa Rica is located within a highly
dynamic region regarding tectonics and volcanism. This means that the gravity
value might change over time due to vertical deformation of the surface caused
by crustal faults and subduction processes and due to changes in the internal
mass distribution caused by magmatic processes. So, the present absolute
network will be very important for gravity changes monitoring, between other
Ana Cristina O. Cancoro de Matos
A Honorary volume for Professor Emeritus
Athanasios Dermanis has been published by the School of Rural and Surveying
Engineering of the Aristotle Universsity of Thessaloniki:
Fotiou A., D. Rossikopoulos, eds. (2018): “Quod erat demonstrandum. In quest for the ultimate geodetic
insight.” Special issue for Professor Emeritus Athanasios Dermanis. Publication
of the School of Rural and Surveying Engineering, Aristotle Universsity of
Thessaloniki, 405 pages. ISBN 978-960-89704-4-1.
The volume includes contributions from
Erik Grafarend, Fernando Sansò, Peter Teunissen, Zuheir Altamimi, Lars
Sjöberg, and many others. Individual contributions are available at: https://www.topo.auth.gr/el/honoraries-dermanis
The whole volume is also available in electronic form. For requests contact:
Prof. Dr. Dimitrios Rossikopoulos (Email: email@example.com)
Table of Contents
E. Grafarend: The Global World of A.
Dermanis and an attempt to use System Dynamics for the analysis of Polar Motion
(POM) and Length of Day Variations (LOD).
Fernando Sansò: Helmert’s
Transform by Quaternions. A
P.J G. Teunissen: Unbiased Estimation +
Testing = Biased Estimation.
A. Fotiou: A Discussion on Least Squares
Adjustment with Worked Examples.
D.A. Rossikopoulos: Residual Analysis and
Detection of Outliers in Mixed Linear Models.
X. Collilieux, Z. Altamimi, P. Rebischung,
L. Métivier: Coordinate Kinematic models in the International Terrestrial
Reference Frame releases.
C. Kotsakis: Datum Singularity in TRF
Estimation: Diagnostic Tools and Rank-Deficient NEQ Reconstruction.
B. Benciolini, D. Sguerso, A. Vitti, P.
Zatelli: New Procedures for the Adjustment of Photogrammetric Blocks.
L.E. Sjöberg: The Temporal Change of the
Geoid Determined from GRACE monthly sets of data.
R. Barzaghi, B. Betti: GNSS Permanent
Station Data Analysis in Crustal Deformation Studies.
A. Fotiou, C. Pikridas, D. Rossikopoulos, S.
Bitharis: Estimation of Velocity Field using seven years GNSS permanent
station data. Application to Hellenic area.
F. Fratarcangeli, G. Savastano, G.
Pietrantonio, M.C. D’Achille, A. Mazzoni, F. Riguzzi, R. Devoti, M. Crespi: Static
vs Real-Time Coseismic Offset Comparison: The Test Case of 30 October, 2016
Central Italy Earthquake.
D. Ampatzidis: Is really the “Local
Datum” an Obsolete and Old-Fashioned Definition? The catalytic role of the
velocity field for the modern geodetic reference frames: The Minimum Kinetic
D.-V. Psychas, D. Delikaraoglou: Precise
Point Positioning in a New GNSS Era.
M. Kaselimi, D. Delikaraoglou: Estimating
the Prospects of Wave Energy Potential in Eastern Mediterranean using
Multi-mission Satellite Altimeter Data.
D.A. Natsiopoulos, G.S. Vergos, I.N.
Tziavos: Modeling the Barotropic Response of the Mediterranean Sea Level to
Atmospheric Pressure Forcing.
M.E. Contadakis, D. Arabelos: Mid
Latitude TEC Variations before and during the Balkan Peninsula Seismic Activity
of 24th May 2009.
G. Panou, R. Korakitis, D. Delikaraoglou: Cartesian
to Geodetic Coordinates Conversion by an Iterative Geometrical Method.
A.E. Foscolos: The Messinian Salinity
Crisis during the Upper Miocene as a Cause for Generating Giant and Super-Giant
Biogenic Gas Fields in the Eastern Mediterranean Basin.
B. Betti, L. Biagi, M. Brovelli: The
Geoinformatics Engineer and the new MSc in Politecnico di Milano.
A. Ktistis, P. Tokmakidis, K. Papadimitriou,
K. Tokmakidis: Surveying, Modeling and 3D Representation of a Wreck for
Diving Purposes: Cargo ship “Vera”.
I. Fotiou: An Introduction to Tropical
M. Papadopoulou, P. Tziachri, P. Lafazani,
F. Papadopoulos, I. Metaxa: Using Spatial Analysis in a GIS Environment, for
the Exploration of Soil and Corresponding Leaf Chemical Components. An
Application in Apple Trees of Kastoria Region, Greece.
I. Pontikas, D. Pekalis, O. Georgoula, P.
Patias, D. Kaimaris: Coastal mapping with the use of unmanned aerial
A. Fylaktakis, S. Basbas, G. Mintsis, Ch.
Taxiltaris, A. Tsoukala: The catalytic role of practical training in
road safety education.
I. Giannopoulou, M. Kaiafa-Saropoulou: Rainwater Harvesting
(RWH) as an alternative source to confront water scarcity worldwide – Current
situation and Perspectives.
information, issue 63(1) of Advances in Space Research (COSPAR official
journal), published on January 1, 2019, is available online and will remain
free-of-charge without any paid subscription to this journal for a complete
year, courtesy of Elsevier, providing promotional OpenAccess.
All articles can
be accessed at:
While it is a
very large issue (59 papers and 812 pages), the selected article below could be
of interest to the Laser community:
Akihisa Hattori, Toshimichi Otsubo Conklin
(2019) Time-varying Solar Radiation Pressure on Ajisai in Comparison with
LAGEOS Satellites, Advances in Space Research, 63(1), 63-72, DOI:
AND SPACE DEBRIS
Dariusz Strugarek, Krzysztof Sośnica and
Adrian Jäggi Conklin (2019) Characteristics of GOCE Orbits Based on Satellite
Laser Ranging, Advances in Space Research, 63(1), 417-431, DOI:
March 14 – 20, 2019, Las Palmas, Gran
March 14-16, 2019, Las Palmas de Gran
May 15 – 17, 2019, Athens, Greece
May 22 – 24, 2019, Tallinn, Estonia
July 8 – 17, 2019, Montreal, Canada
September 18 – 20, 2019, Munich, Germany
October 1 – 4, 2019, Saint Petersburg,
October 21 – 25, 2019, Stuttgart,
March 9, 2019, Delhi, India
March 25-27, 2019, Munich, Germany
March 25-29, 2019, Bern, Switzerland
April 7-12 , 2019, Vienna, Austria
April 8-11 , 2019, Honolulu, Hawaii, USA
April 15-17, 2019, Potsdam, Germany
May 13-17 , 2019, Milan, Italy
May 22-30 , 2019, Arkhangelsk ,Russia
July 28 – August 2, 2019, Singapore,
August 12-13, 2019, Prague, Czech
September 9-13, 2019, Gävle, Sweden
November 4-8, 2019, Herzliya, Israel
The Space Environment
Research Centre (SERC) and the ILRS hosted the 21st International
Workshop on Laser Ranging at the John Curtin School of Medical Research, Australian National University in
Canberra, Australia during the week of November 05-08, 2018. SERC was
established to combine government, university, and industry resources to apply
new optical technology toward the problem of space debris, including
information and direct intervention. Their research supports improvements in
debris orbit predictions that allow active satellites to maneuver in time to
avoid space debris collision. As such, SERC is, in general, very interested in
The theme of the workshop “Laser Ranging for Sustainable
Millimeter Geoscience” afforded presentations on a wide range of topics
highlighting SLR contributions to research. The workshop consisted of nine oral
sessions with posters for each session. The session topics were:
Contribution to Global Geodetic Observing System – A 2020 Perspective
in the SLR Product Quality and Precise Orbit Determination
Missions and Techniques for Geodetic Applications
of Retroreflector Arrays
Operations and Site Upgrades
in SLR Techniques and Technologies
in Software and Automation
Ranging and Deep Space Missions
In addition to the main oral sessions, the workshop
dedicated significant program time to poster sessions. Poster submissions were
requested for each session theme. Furthermore, posters which provided updates
on station activities were strongly encouraged. The workshop once again
included a station operations or “clinic” session where ILRS experts met in
small groups of station engineers and operators to provide solutions to common
station problems, information to maintain station stability, and guidelines for
interacting with the analysts in determining station biases. These station
clinics were well received and attended by workshop participants.
Over 175 registrants from 23 countries participated in the
four-day laser ranging workshop. It was followed by a one-day International
Workshop on Space Debris Management on November 09; 20 additional attendees,
mainly from Australia, participated.
Participants in the 21st International
Workshop on Laser Ranging, Canberra Australia, November 2018. (Photo
credit: Exclusive Images, Canberra, Australia)
The workshop program included 80 oral presentations and
over 60 posters; 25 oral presentations and 15 posters were given at the Space
Debris Workshop. All abstracts, presentations, posters, and summary papers from
both workshops are available within the Program section of the workshop’s
proceedings website: https://cddis.nasa.gov. Additional information,
such as meeting summaries, photos, and the full program booklet are available
through this website.
Dr. Thomas Herring gave the keynote
presentation “Contributions of SLR for the Next Decade”
(Photo credit: Exclusive Images, Canberra,
Professor Thomas Herring, Massachusetts Institute of
Technology, Cambridge, MA gave the invited keynote talk to open the workshop.
Professor Herring’s presentation highlighted the
important synergy of SLR with the other space geodesy techniques, and ways of
drawing out small systematic issues through careful scrutiny of the SLR data.
The four-day workshop
program was organized into nine oral sessions, and two poster sessions focused
on the oral session topics. A brief summary of these sessions:
Session 1, “SLR
Contribution to the Global Geodetic Observing System – A 2020 Perspective”
covered SLR contributions to GGOS and inter-technique comparisons and synergies
between SLR and other space geodetic techniques including the role of local
“Improvements in the SLR Product Quality and Precise Orbit Determination” dealt
with estimation and monitoring of systematic errors, improved center of mass
correction on geodetic satellites, advances in geophysical modeling, SLR
synergy with GNSS, and SLR improvements in the terrestrial reference frame.
Session 3, “Satellite
Missions and Techniques for Geodetic Applications” discussed some of today`s
many SLR applications including: validation and QC support for GNSS, spacecraft
engineering tests, laser time transfer, spacecraft attitude determination,
reflector panel resolution performance, new methods of gravity field
estimation, and new application through the use of constellations of
Session 4, “Network Operations
and Site Upgrades” included plans for new stations, upgrades and new technology
at existing stations, overall network performance, and review of updates to
Session 5, “Sources of
Systematic Errors”, stressed the challenge of the 1-mm accuracy for GGOS and
demonstrated that the identification and characterization of system biases now
underway, is an essential step toward achieving this goal; some new analytic
and modeling techniques for reducing range biases and the introduction of
automated processing with data discrimination procedures are already being
implemented at some stations.
“Characteristics of Retroreflector Arrays”, reviewed new developments in
retroreflector arrays, including new targets already being tracked and those in
planning or testing for future missions, including new compact retroreflector
arrays that will reduce ranging RMS.
Session 7, “Development
of Software and Automation”, discussed the move toward fuller automation,
including software development in scheduling, visualization, data processing,
and station performance assessment.
“Developments in SLR Techniques and Technologies”, focused on new technologies
to improve performance, and help standardize and simplify SLR/LLR systems, and potentially
reduce systems costs, and the use of existing technologies for new SLR
applications such as laser communication and space debris monitoring.
Session 9, “Lunar Laser
Ranging and Deep Space Missions”, reviewed recent progress in Lunar Laser Ranging
and lunar reflector technology; interest is growing in lunar ranging and the
science resulting from these measurements with more stations being planned.
organizers allocated one afternoon during the week to station “clinics”,
allowing station operations staff (and anyone else with interest in the topics
covered) to meet in small groups with experts in the engineering and data
analysis areas. The clinics primarily benefited station representatives
although others attendees were encouraged to participate. The topics covered in
the clinic sessions were:
Web tools and software
Calibration and ground
These sessions were intended to be two-way
conversations between topic experts and station contacts; material was prepared
and distributed prior to the workshop to allow these representatives to gather
any questions prior to the workshop. Six small group clinics provided solutions
to common station problems, information on maintaining
station configuration stability, overview of new tools available, and
guidelines for interacting with the analysts in determining station biases.
One issue that
stimulated discussion was the SLR policy in tracking GNSS satellites. The ILRS routinely prioritizes satellite targets by altitude (LEO
through geosynchronous), with occasional adjustments to enhance tracking on new
satellites, typically with active systems aboard. Within the GNSS regime,
several satellites may be given high priority at the request of the
constellations to provide better pass coverage (3 pass segments) for special
directed applications. Of the remaining GNSS satellites (currently ~ 60), a
subset is identified for non-prioritized tracking on “as time permits” basis.
The ILRS will work with the IGS and the contacts from the GNSS constellations
for their inputs.
International Workshop on Laser
Ranging concluded with a general discussion on the format of the workshop,
planning for future workshops, and improvements to the clinic content and
organization. In addition, the attendees put forth several resolutions:
Requests that ILRS
instruct stations to track the non-prioritized GNSS satellites in a low density
(1 pass segment), randomized manner, where each station can freely select a set
of GNSS satellites for tracking on a weekly basis, and in that way, get an
orbital sampling of many GNSS satellites.
Requests that the
remaining GNSS satellites be left in a randomized tracking pool;
development/installation of SLR stations in the Asia-Pacific region and the
transition to kHz laser systems thus enabling shorter normal point duration.
Suggests that GNSS
satellite tracking would be helped by giving stations some general selection
criteria to encourage a satellite mix;
relegating all the remaining GNSS satellites (~60 ) to a lower active tracking
priority might lead to very sparse coverage, and that it might be wise to
reduce this pool to ~30 well-selected satellites to avoid an imbalance of
tracking among the constellations and to recognize the difference in day-night visibilities.
acknowledged the great success
of the 21st International Workshop on Laser Ranging and thanked SERC
and the local organizers for their exhaustive efforts and meticulous
organization that enabled this successful workshop.
Dr. Moriba Jah gave the keynote presentation “Towards
Quantifiable Resident Space Object Activity and Behavior Prediction,
Identification, Quantification, and Assessment” for the International
Workshop on Space Debris Management (Photo credit: Exclusive Images,
The last day of
the week was devoted to a separate event, the International Workshop on Space
Debris Management, which has synergy with new ILRS applications. Associate Professor Moriba Jah, University of Texas at
Austin gave the opening keynote presentation to the International Workshop on
Space Debris Management. This interesting talk covered the global
importance of developing a capability to predict, quantify, and assess the
behavior of objects in space and ideas for identification, location
prediction/modeling, and quantification of space objects.
Participants in the Space Debris Workshop, Canberra
Australia, November 2018. (Photo credit: Exclusive Images, Canberra
local organizing committee not only assisted in the preparation of an excellent
program, but handled all logistics at the venue and
arranged several excellent social events. The Wednesday workshop banquet took
place at the National Arboretum, surrounded by forests
of rare and endangered trees from not only Australia but around the world;
attendees explored the grounds and were treated to a beautiful landscape
complete with double rainbow. On the final day of the
week, participants were given a tour of the EOS Space Research Centre (including the telescope
facility) at Mt. Stromlo, which consists of operational and lab
facilities for SLR and space debris tracking. The site also includes a
state-of-the-art ground survey monitoring system with some locally built
survey/ground baseline monitoring hardware. The local hosts concluded the tour
with a barbeque dinner on the grounds of Mt. Stromlo with local kangaroos in
View of Canberra from the National Arboretum. (Photo
credit: Carey Noll/ILRS Central Bureau, NASA GSFC)
Mt. Stromlo Satellite Laser Ranging Observatory (Photo
credit: Exclusive Images, Canberra Australia)
Once again, this
International Workshop on Laser Ranging was another successful assembly of
experts in the global laser ranging scientific community. The community looks
forward to the next opportunity to meet, the 22nd International
Workshop on Laser Ranging, which is planned for the 2020 timeframe in Kunming