Summary of the November 2nd  2000 Meeting of the GEOIDE Project 14

Réunion du Projet GEOIDE ENV#14
tenue le 2 novembre 2000 chez Viasat à Montréal


Meeting of the GEOIDE Project ENV#14
hold on November 2nd 2000 at Viasat in Montreal



9:00 Mots de bienvenue / Welcome addresses

People present at the meeting :

CRG-UL : Rock Santerre, Brian Morse, Jianjun Zhu, Annie Biron
UNB : Richard Langley, Donghyun Kim
GSD : Pierre Tétreault
Viasat : Denis Parrot, Claude St-Pierre

9:05 Résumé des activités de recherche depuis mai 2000/

Summary of research activities since May 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. He presented a chart summarising his research axes. His main targets are related to computational efficiency, increasing the success rate of the ambiguity resolution, and quality control. He had visited Viasat during the summer to get acquainted with the problems encountered in every day life. Lately his interests have been cycle slips and multipath detection in kinematic mode with multiple reference stations.

Dr. Langley reported the activity of one of his Ph.D. students, S. Bisnath, on reliable cycle slips detection and repairs. Sunil Bisnath joined the Project ENV#14 team last summer.



Dr. Zhu a postdoctoral fellow arrived at the CRG, last July. He took over Dr. Mami Ueno’s works. He presented preliminary results obtained with his proposed approach which uses a priori height, obtained from the tide gauges, as pseudo observation into GPS data processing, rather than as a comparison for the solution (height from GPS-OTF).

Annie Biron has completed the development of her software for the L1 carrier phase data processing in rapid-static mode for GPS, GLONASS, and GPS+GLONASS solutions. She has used Tienstra least-squares adjustment in the process of instantaneous positioning with fixed ambiguities. Data set has been tested and analysis has been done. She has spent 2 weeks at UNB during August to familiarise with the works being done at UNB and to experience Javad GPS/GLONASS receivers and software. She has been writing her M.Sc. thesis which could be completed by the end of November.

Brian Morse, a professor of Civil Engineering and associate member of the CRG at Laval University, joined the team last June. He has presented his research background in hydrodynamics and his interests in the Project ENV#14. Dr. Morse’s interests are related to ship under keel clearance for secure maritime navigation. Field tests (not paid by GEOIDE) are being made this Fall, for the St. Lawrence Seaway, and data sets will be available to the Project ENV#14 research team.



Pierre Tétreault reported that the GSD is calculating Ultra Rapid Orbits available 3 hours after the data has been collected (contribution to IGS). These orbits are uploaded twice a day for IGS.


Claude St-Pierre has presented the algorithm of Viasat’s GPS software suite. He has tried to implement the works done by Dr. Kim on cycle slips detection using quadruple and quintuple phase differences. Collaborative works between Viasat and UNB have to be further done to complete this effort.


New GPS-OTF real-time tests will be made on November with DSNP equipments on the St-Lawrence River. The raw data sets and DSNP results will be available to the Project ENV#14 for further testing.

11:45 - 12:00 Évaluation intérimaire du projet ENV#14 / Interim Evaluation of the Project ENV#14

The Research Management Committee required an interim progress report to the Project ENV#14. The report was due to August 15th. Rock Santerre presented to the Team the letter by K. Thomson (GEOIDE Scientific Leader) summarising the evaluation of the project ENV#14 by the RMC. Overall the evaluation was quite positive. Minor points will be addressed into the Second Annual Progress report due to November 15th. Additional funding of 25,000$ from DFO has been supplied to support the new research initiative that will be performed by Dr. Morse.

12:00 - 14:00 Dîner / Lunch

14:00 – 15:00 Planification des futures activités de recherche / Planning of future research activities

D. Parrot has requested a schedule chart showing the activities of all the participants for the second half of the project. He reminded all members of the project that research activities should be more oriented on practical aspects and that the algorithms and pieces of software which prove to be efficient should be implemented, later on, into existing software for future commercialisation.

Dr. Kim will continue his works, as reported previously, but keeping in minds Viasat’s preoccupation. He will closely collaborate with Viasat, to concretely implement his algorithms into existing Viasat’s software. Related to Dr. Kim’s works, one refereed paper has been accepted and another one is in preparation.

Dr. Zhu will finish his work on a priori height as quasi observations, during the next few weeks, in collaboration with C. St-Pierre from Viasat. Suggestion has been made by Viasat, that his future works include the improvement of the reliability of GPS float solution.

Annie Biron will finish her M.Sc. thesis by the end of November. A paper will be published on GPS-Glonass.

Dr. Brian Morse, will start to analyse the phenomena of squat and under keel clearance form the GPS field data sets collected this Fall. A graduate student (or a research assistant) will be hired to assist Dr. Morse. A full description of his research axis, part of the Project ENV#14, will be prepared and included in the Second Annual Progress Report.

Dr. Santerre reminded the members that a Second Annual Project Report is due for the 15th of November.


15:00 – 15:15 Fonds spéciaux GEOIDE / GEOIDE Special Funds

R. Santerre informed the team members of the different GEOIDE Special Funds related to education and training as well as on the GEOIDE Market Development Fund. For the latter, Sylvain Poirier from the GEOIDE Office will communicate with D. Parrot from Viasat.

15:15 – 15:45 Lettre d’intention / Letter of Intent (GEOIDE Phase 2)

A new GPS/GALILEO project involving the 4 universities active in GPS (Laval, UNB, Ryerson, and Calgary) and several industries and government agencies was discussed by the members of this project.

There was also mention of another new GEOIDE Maritime project (involving CHS and CCG) which could lead by Brian Morse along with possible collaboration with the UNB Ocean Mapping Group.

15:45 - 16:00 Prochaines réunions / Next meetings

The next project meeting is scheduled during the week of 5-10 March 2001, to be held at the Geodetic Survey Division Office, in Ottawa. The date will be announced later. Another meeting is also planned during the Third Annual GEOIDE Meeting to be hold in Fredericton, next June. The Second Annual GPS Round Table Meeting will also be held at that time.

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