Réunion du Projet GEOIDE
tenue le 20 juin 2001 à UNB
Meeting of the GEOIDE Project
held on June 20th 2001 at UNB
9:00 Mots de bienvenue / Welcome
People present at the meeting :
CRG-UL : Rock Santerre, Brian
Morse, Jianjun Zhu, Xiaowen Chang (McGill)
UNB : Richard Langley, Donghyun
Kim, Sunil Bisnath, Tomas Beran
9:05 Résumé des activités de
recherche depuis novembre 2000/ Summary of research activities since November 2000
Dr. Kim has continued his work on an optimised
least-squares ambiguity search technique and on the improvement of reliable and robust OTF
solutions. His planned schedule (see the Project ENV#14 March 2001 report to the RMC) has
been respected. UNBs work has been presented during the ION National Technical
Meeting held at Long Beach in January and KIS Conference held in Banff earlier this month.
A poster presentation is also presented during the GEOIDE Conference. Other presentations
will be made during the ION Conference at Salt Lake City, next September. Software modules
related to cycle slip detection and stochastic modelling are available to Viasat (our
private industry partner).
S. Bisnath, a Ph.D. student at UNB, who joined the
Project ENV#14 team last summer has worked on reliable cycle-slip detection and repair. A
joint paper with Drs. Kim and Langley has been published in GPS World (May 2001).
T. Beran, formerly involved in Project RES#47, will
now work within Project ENV#14 on the topic of wide area ionospheric modelling.
Dr. Zhu worked on the use of a priori height,
obtained from the tide gauges, as a quasi observation in GPS-OTF data processing. A poster
on this topic is presented during the GEOIDE Conference and a paper will be submitted soon
to Geomatica. He also works on a robust and efficient GPS float solution to be included in
Viasats EZSurv commercial software.
Dr. Chang from the Computer Science Department at
McGill University, a visiting scientist at the CRG during May and June 2001, works in
close co-operation with Dr. Zhu. He is a specialist in computer algorithm optimisation and
GPS integrity solutions. Dr. Chang will officially join the GEOIDE Project ENV#14 soon.
Annie Biron completed her M.Sc. thesis last March.
She worked on the development of software for the L1 carrier phase data processing in
rapid-static mode for GPS, GLONASS, and GPS+GLONASS solutions. The reviewers of her thesis
were P. Tétreault from GSD, Dr. Alain Geiger from ETH in Zurich and Dr. R. Santerre, her
supervisor. Annie is now working at the Canadian Hydrographic Service (DFO) in Mont-Joli,
Brian Morse, a professor of Civil Engineering,
worked with Stéphanie Michaud (a research assistant at the CRG) on the determination of
ship under keel clearance for secure maritime navigation. Data from field tests (not
funded by GEOIDE) collected during last Fall, for the St. Lawrence Seaway, are now
available to the Project ENV#14 research team. Dr. Morse and S. Michaud had a couple of
meetings in Ottawa with the field test contractors to co-ordinate research activities with
them. Preliminary findings about this work are presented as an oral communication during
the GEOIDE Conference.
Claude St-Pierre at Viasat provided many data sets
and performed comparison tests on Dr. Zhus algorithm results. He visited the CRG in
May to have discussion with Drs. Zhu, Santerre and Chang.
Pierre Tétreault acted as one of the reviewers
of Annie Birons M.Sc. thesis.
11:00 12:00 Planification
des futures activités de recherche / Planning of future research activities
Dr. Kim will continue his scheduled work. He will
closely collaborate with Viasat, to concretely implement his algorithms into existing
Viasat software. It is suggested that Claude St-Pierre from Viasat should visit UNB in the
S. Bisnath will work on Precise Point Positioning
using precise clock parameters and ephemerides. This software module could be added to
Viasats GPS software suite.
T. Beran will work on wide area ionospheric
modelling and multiple reference stations solutions for kinematic positioning.
Dr. Zhu will quit the CRG to return to South Central
University in China by the end of July. He will visit Viasat before he leaves to transfer
his software and algorithms to our industrial partner.
Dr. Morse and S. Michaud will continue to analyse
the phenomenon of squat and under keel clearance from the GPS field data sets collected
last Fall. Some GPS data will be reprocessed with the CRG GPS-OTF software for a better
and deeper investigation of squat and attitude of ships. A graduate student will probably
join this sub-project in the near future. A paper related to the GEOIDE Conference
presentation has to be prepared for September. According to the GEOIDE Business Office,
the papers of this Conference are going to be published as a collective book.
A couple of papers to be submitted to refereed
journals have been identified. One of them will summarise the GPS related work performed
by our team.
12:00 12:10 Lettre
dintention / Letter of Intent (GEOIDE Phase II)
The Letter of Intent about the Galileo Project
(LOI#19), involving the 3 universities active in GPS (Laval, UNB and Calgary), has been
accepted by the GEOIDE Research Management Committee. The full proposal is due to October
15th, 2001. A planning meeting, with Y. Gao, R. Langley and R. Santerre, has
been held June 22nd during the GEOIDE Conference.
12:10 - 12:15 Prochaine réunion /
The next project meeting is scheduled for the end of
October (after October 15th, the deadline for the full proposal of GEOIDE Phase
II projects). The meeting will probably be held at Viasats new office, in Montréal.
The date will be announced later.
12:15 Fin de la réunion / End of
P.S. In the afternoon the Second Annual GEOIDE
GPS Round Table Meeting was held (see R.B. Langleys report for more details).
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