[IGSMAIL-8051] Session 4.3 @ IAG Scientific Assembly 2021

[Paweł Wielgosz]

Dear Colleagues,

The Scientific Assembly of the International Association of Geodesy will 
take place on-line from June 28th to July 2nd, 2021. We draw your 
attention in particular to the session 4.3: Techniques and Applications 
in High Precision GNSS.

The abstract submission deadline is April 30th. Please consider 
submitting an abstract for this session or contact us directly if you 
have any questions.
You may submit your abstract at: 
http://www.iag2021.com/en/web/index/1646_802946__

Session abstract:
The year 2020 marks a new era of multi-constellation GNSS with an 
increased number of available satellites in different orbits, diverse 
signals/frequencies, and new correction products and services. This 
ongoing modernization offers exciting prospects for further improvement 
of high precision GNSS PNT algorithms and methods, as well as opens up 
new areas of research and innovation. For example, the increased number 
of satellites and signals-in-space improves the performance of precise 
positioning applications; the available of addition frequency signals 
beyond L1 and L2 enables new concepts for signal quality assessment and 
improved carrier phase ambiguity resolution techniques; integrity and 
quality control methods; multi-GNSS satellite metadata to allow 
determination of GNSS-based terrestrial reference frame scale, orbit 
determination; as well as new services such as Precise Point Positioning 
(PPP) and emergency warning services. At the same time, the number of 
applications enabled by high precision GNSS is increasing rapidly 
including but not limited to location-based services, autonomous 
navigation, Internet-of-Things (IoT), etc.

This session is a forum to discuss new developments in high precision 
GNSS algorithms and techniques, as well as to share novel, emerging and 
innovative applications of GNSS. This session solicits contributions 
focusing on aspects of:
• High-precision GNSS algorithms, modelling and estimation strategies
• Multi-frequency multi-GNSS biases and calibrations
• PPP, RTK, PPP-RTK
• New or improved GNSS products for high precision applications such as 
orbits, clocks, etc.
• Ambiguity resolution and validation
• Cost-effective, smartphones high precision GNSS
• High-precision applications for geosciences, natural hazards prevention
• GNSS and LEO constellation Keywords: GNSS, high precision, PPP, RTK, 
PPP-RTK, biases, calibration, ambiguity resolution, cost-effective, 
geosciences, natural hazards prevention

Sincerely,

Pawel Wielgosz and Suelynn Choy
/Session Conveners/