Recent Advances in GNSS High-Precision Positioning and Applications
A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Earth Sciences".
Deadline for manuscript submissions: closed (20 July 2023) | Viewed by 7560
Special Issue Editors
Interests: multi-GNSS positioning; quality control and integrity monitoring; GNSS ionosphere sensing; geodesy and surveying
Interests: multi-GNSS precise positioning; integer ambiguity resolution; estimation theory
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Special Issue Information
Dear Colleagues,
Society’s reliance on high-accuracy and high-integrity Global Navigation Satellite System (GNSS) data and products is rapidly growing; therefore, advancements in models and algorithms are needed to address the challenges in enhancing the accuracy, availability, convergence, and integrity of high-precision GNSS applications.
With the ongoing rapid development of Galileo (Europe) and BeiDou (China), and the modernization of GPS (USA) and GLONASS (Russia), there is an increase in the number of tracked satellites and frequencies, which can serve in improving both positioning and non-positioning applications. The integration of such GNSS data can lead, for example, to positioning performance improvements in adverse environments, reduction of the convergence times, and also improvements in the sampling of the troposphere and the ionosphere in both space and time. Although one has traditionally relied on expensive GNSS equipment for such applications, technological developments have enabled precise positioning even with low-cost mass-market GNSS receivers and smartphones, thus resulting in a range of numerous new applications that require efficient data-processing frameworks. Further, the extension of the family of GNSS constellations with Low Earth Orbit (LEO) satellite constellations have highlighted the navigational advantages the users can enjoy, which include, among others, improved satellite geometry, rapid convergence, observational redundancy and improved multipath mitigation. With these GNSS developments, new problems and challenges come to the fore that require rigorous models and algorithms for integrating such multi-system and multi-frequency sensory data and also for handling the biases that contaminate the latter.
The goal of this Special Issue is to highlight recent developments in high-precision GNSS positioning models, algorithms, and applications. The topics of interest include, but are not limited to, the following:
- Multi-GNSS multi-frequency PPP, RTK, PPP-RTK models and algorithms, making use of high-grade and low-cost equipment
- Quality characterization of smartphone GNSS observations;
- Functional and stochastic models for multi-GNSS precise positioning with smartphones;
- Characterization and handling of multi-GNSS inter-system and inter-/intra-frequency code and phase biases;
- Ionospheric and tropospheric modelling;
- Carrier-phase ambiguity resolution;
- GNSS-LEO observation modeling and integration;
- Integrity monitoring;
- GNSS-based lunar navigation;
- Satellite orbit dynamics.
Dr. Safoora Zaminpardaz
Dr. Dimitrios Psychas
Guest Editors
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Keywords
- Global Navigation Satellite Systems (GNSS)
- Precise Point Positioning (PPP)
- Real-Time Kinematic (RTK) positioning
- Integer Ambiguity Resolution (IAR)
- atmosphere
- GNSS biases
- smartphones
- LEO
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