Accurate Time and Frequency Comparisons
Using GPS Phase and Code Measurements
Agency Contact Person(s) Areas of Participation
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AIUB & OFMET Thomas Schildknecht deploy GPS receivers, GPS data analysis, analyze
Tim Springer instrument delays, IGS Analysis Center,
Frédéric Overney develop geodetic time transfer terminal
Leon Prost
Gregor Dudle
AOS/BOROWIEC Jerzy Nawrocki deploy GPS receivers, GPS data analysis, analyze
instrument delays, time transfer comparisons,
IGS site BOR1
ATSC Angela Chen GPS data analysis, time transfer comparisons,
Joe Green common view between DSN & NIST using
TTR-5, TTR-6 timing receivers
AUSLIG John McK. Luck deploy GPS receivers, GPS data analysis, analyze
Ramesh Govind instrument delays ?, time transfer comparisons,
Ashtech Z-12 with Cs, GPS common view link to UTC,
1 pps monitoring, comparisons with VLBI & SLR
BIPM Gérard Petit deploy GPS receivers, GPS data analysis, analyze
Zhiheng Jiang instrument delays, time transfer comparisons
BKG Wolfgang Schlueter deploy GPS receivers, analyze instrument delays,
time transfer comparisons, IGS site WTZR with
H-maser, Ashtech & Trimble receivers, comparisons
to UTC(IfAG), TTR6 timing receiverk, 3S GLONASS
receiver
BNM-LPTF Pierre Uhrich deploy GPS receivers, GPS data analysis, analyze
Francois Taris instrument delays, time transfer comparisons
CAGLIARI L. Mureddu analyze instrument delays, time transfer comparisons
Filippo Messina
CHUNGHWA Kun-Yuan Tu deploy GPS receivers, GPS data analysis, time
Chia-Shu Liao transfer comparisons
Ching-Haur Chang
Hsin-Min Peng
DLR Joerg Hahn deploy GPS receivers, GPS data analysis, analyze
instrument delays, time transfer comparisons,
H-masers, TTR-4P receiver, 3S GLONASS receivers
GFZ Stefan Bedrich deploy GPS receivers, GPS data analysis, time
transfer comparisons, IGS site OBER, Rb & H-maser
clocks, comparisons with PRARE
HAYSTACK Arthur Niell analyze instrument delays, comparisons with VLBI
Brian Corey
CFA Jim Davis
IEN Franco Cordara TWSTT, CCTF Working Group on TWSTT
IMVP Sergey Poushkin deploy GPS receivers, GPS data analysis, analyze
Leonid Sinenko instrument delays, time transfer comparisons,
Nikoly Koshelyaevksy IGS sites MDVO & IRKT with H-masers and GLONASS
receivers, Khabarovsk site with H-maser and
GPS/GLONASS receiver
JPL Jim Zumberge deploy GPS receivers, GPS data analysis, analyze
Charley Dunn instrument delays, time transfer comparisons
David Jefferson
Robert Tjoelker
Eric Burt
KRISS Yang Sup Song 3 Cs, 1 H-maser, 2 GPS timing receivers
for common view comparisons
LHA Roland Barillet Ashtech receiver, H-maser
Frederic Hamouda
MAO Mytia V. Golovnia deploy GPS receivers, analyze instrument delays,
time transfer comparisons, IGS site GLSV
NIST/BOULDER Judah Levine deploy GPS receivers, GPS data analysis, analyze
Lisa Nelson instrument delays, time transfer comparisons,
work with rx manufacturers, design geodetic
timing receiver
NPL Setnam Shemar deploy GPS receivers, analyze instrument delays,
John A. Davis time transfer comparisons, Ashtech Z12-T and
AOA TTR-4P timing receivers, 2 Sigma Tau MHM 2010
active H-masers
NPLI P. Banerjee analyze instrument delays, time transfer comparisons
NRL Ronald L. Beard deploy GPS receivers, GPS data analysis, analyze
Joe White instrument delays, time transfer comparisons
NTU Fan-Ren Chang GPS data analysis, time transfer comparisons
ORB Carine Bruyninx deploy GPS receivers, analyze instrument delays,
Pascale Defraigne clock comparisons by single differences on phases,
Rene Warnant IGS site BRUS, GLONASS data, 3 Cs & 1 H-maser,
Motorola Oncore receiver, L1/L2 differential delays
ROA Juan Palacio deploy GPS receivers, GPS data analysis, analyze
instrument delays, time transfer comparisons,
IGS site SFER, 2 HP5071A Cs clocks,
2 TTR-4P timing receivers
SGO Istvan Kardos analyze instrument delays, IGS site PENC,
analyze site-dependent effects
SP & OSO Kenneth Jaldehag deploy GPS receivers, GPS data analysis, analyze
Jan Johansson instrument delays ?, time transfer comparisons,
study site dependent effects
SSIA V. Solovyov develop GPS receivers, time transfer comparisons
A. Tkachuk
TUG Dieter Kirchner deploy GPS receivers, analyze instrumental delays,
time transfer comparisons, IGS site GRAZ,
SLR station, maintain UTC(TUG), 3 Cs clocks
(5061A and two 5071A), permanent and transportable
TWSTFT stations, GPS timing receivers
U. COLORADO Kristine Larson GPS data analysis, time transfer comparisons
John Plumb
UFPR Marcelo C. Santos SIRGAS site PARA, Cs clock
U. MICHIGAN Alexander Crawford GPS data analysis, analyze instrument delays,
analysis of mathematical procedures
UNB Richard Langley GPS data analysis, analyze instrument delays,
Sunil Bisnath assess receiver performance, time transfer
between moving platforms
USNO Dennis McCarthy deploy GPS receivers, GPS data analysis, analyze
Demetrios Matsakis instrument delays, time transfer comparisons,
Mihran Miranian investigate near-realtime timescales,
Paul Wheeler IGS site USNO
Jim DeYoung
Ed Powers
Lara Schmidt
Jim Ray
Jim Rohde
USP Denizar Blitzkow deploy GPS receivers, GPS data analysis, analyze
Edvaldo Simoes da Fonseca Junior instrument delays
BIPM Felicitas Arias Head of Time Section, BIPM USNO Jim Ray Head of Earth Orientation Dept., USNO
AIUB Gerhard Beutler CODE Analysis Center
Werner Gurtner
Markus Rothacher
Stefan Schaer
Robert Weber IGS Analysis Center Coordinator
Heike Bock
Rolf Dach
AOY Goran Damljanovic Astronomical Observatory
BIPM Terry Quinn Director of BIPM
Felicitas Arias Head, BIPM Time Section
Wlodzimierz Lewandowski
Bernard Guinot
Peter Wolf
Jacques Azoubib
CNES Jean Kovalevsky President of CIPM
CRL Michito Imae Communications Research Laboratory
Ryuichi Ichikawa
Yasuhisa Shibuya
ESOC John Dow ESA Analysis Center
C. Garcia Martinez
Ignacio Romero
GFZ Christoph Reigber GFZ Analysis Center, Chair of IGS Governing Board
Galina Dick
Gerd Gendt
Wolfgang Soehne
GSFC Tom Clark NASA Geoscience Technology Office
Carey Noll CDDIS, IGS Global Data Center
IEN S. Leschiutta President of CCTF
Patrizia Tavella Chair of CCTF Working Group on TAI
IGN Pascal Willis Coordinator of IGEX-98 Campaign
ISI Bill Klepczynski Chair of TWSTT Working Group
ITC Michael Chow Standards and Calibration Laboratory
JPL Ruth Neilan Director of IGS Central Bureau
Angelyn Moore Deputy Director of IGS Central Bureau
JPL Mike Watkins JPL Analysis Center
Larry Young
Yoaz Bar-Sever
Mike Heflin
Brian Wilson
Tomas J. Martin Mur
Ron Muellerschoen
METAS Laurent-Guy Bernier Time & Frequency Laboratory
NMI Takeshi Ikegami Cheif, Time Standards Section
NOAA Gerry Mader NGS Analysis Center
Bill Kass
Miranda Chin
NRCANADA Jan Kouba EMR Analysis Center
Caroline Huot
Yves Mireault
Pierre Tetreault
Norman Beck
Francois Lahaye
OHIO Ivan Mueller IGS Governing Board
ORB Paul Pâquet CIPM
PTB Andreas Bauch PTB, Braunschweig
Peter Hetzel
SIO Yehuda Bock SIO Analysis Center
Peng Fang
2SOPS Steven Hutsell GPS Systems Operations
USNO Merri Sue Carter USNO Associate Analysis Center
Arvid Myers
Bill Bollwerk USNO Time Service Dept.
Paul Koppang
Chris Ekstrom
Ken Senior
WTUSM Guigen Nie Wuhan Tech. U. of Surveying & Mapping
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AIUB Astronomical Institute University of Bern, Switzerland
AOS/BOROWIEC Astrogeodynamical Observatory, Space Research Centre, Polish
Academy of Sciences, Poland
AOY Astronomical Observatory, Yugoslavia
ATSC Allied Signal Technical Services Corp., USA
AUSLIG Australian Surveying and Land Information Group, Australia
BIPM Time Section, Bureau International des Poids et Mesures, France
BKG Bundesamt für Kartographie und Geodäsie, Germany
BNM-LPTF BNM-LPTF, Observatoire de Paris, France
CAGLIARI Cagliari Astronomical Observatory, Italy
CCTF Consultative Committee for Time and Frequency, CIPM
CODE Center for Orbit Determination in Europe, Switzerland
CHUNGHWA Telecommunication Laboratories, Chunghwa Telcom. Co., Taiwan
CIPM Comité International des Poids et Mesures
CNES Centre National de Etudes, France
CFA Center for Astrophysics, USA
CRL Communications Research Laboratory, Time and Frequency Division
DLR Deutsches Zentrum für Luft- und Raumfahrt e.V., Institute of
Radio Frequency Technology, Germany
ESOC European Space Operations Centre, Germany
GFZ GeoForschungsZentrum Potsdam, Div. 1/PRARE, Oberpfaffenhofen,
Germany
GSFC Goddard Space Flight Center, NASA, USA
HAYSTACK Haystack Observatory, USA
IEN Time and Frequency Laboratory, Istituto Elettrotecnico Nazionale
G.Ferraris, Italy
IGN Institut Géographique National, France
IGS International GPS Service
IMVP Institute of Metrology for Time and Space (IMVP GP VNIIFTRI), a center of
the National Service for Time, Frequency and EOP determination, Russia
ISI Innovative Solutions International, USA
ITC Standards and Calibration Laboratory, Hong Kong
JPL Jet Propulsion Laboratory, USA
KRISS Korea Research Institute of Standards and Science, Korea
LHA Laboratoire de l'Horloge Atomique, University Paris-Sud, France
MAO Main Astronomical Observatory, Ukraine
METAS Metrology and Accreditation Switzerland
NIST/BOULDER National Institute of Standards and Technology, USA
NMI National Metrology Institute of Japan
NPL Centre for Time Metrology, National Physical Laboratory, UK
NPLI Time and Frequency Section, National Physical Laboratory, India
NRCANADA Geodetic Survey of Canada, Natural Resources Canada, Canada
NRL U.S. Naval Research Laboratory, USA
NTU Dept. of Electrical Engineering, National Taiwan University, Taiwan
OFMET Swiss Federal Office of Metrology, Switzerland
OHIO Ohio State University, USA
ORB Royal Observatory of Belgium, Belgium
OSO Onsala Space Observatory, Chalmers University of Technology, Sweden
PTB Physikalisch-Technische Bundesanstalt, Germany
ROA Real Instituto y Observatorio de la Armada, Spain
SGO Satellite Geodetic Observatory, PENC, Hungary
SIO Scripps Institution of Oceanography, USA
SP Swedish National Testing and Research Institute, Sweden
SSIA SSIA Metrology, Ukraine
TUG Technical University Graz, Department of Communications and Wave
Propagation, Austria
2SOPS 2nd Space Operations Squadron, Schriever Air Force Base, USA
U. COLORADO University of Colorado, USA
UFPR Space Geodesy Lab, Universidade Federal do Parana, Brazil
U. MICHIGAN University of Michigan, USA
UNB Geodetic Research Laboratory, University of New Brunswick, Canada
USNO U.S. Naval Observatory, USA
USP Polytechnic School - University of Sao Paulo, Dept. of Transportation
Engineering, Laboratory of Topography and Geodesy, Brazil
WTUSM Wuhan Technical University of Surveying and Mapping, China