[IGSMAIL-7476] Special Issue on Multi-GNSS

[Xingxing Li]

Announcement of a Special Issue of Advances in Space Research on

Multi-constellation GNSS: Methods, Benefits, Challenges, and Geosciences Applications

Papers are invited for a special topical issue of Advances in Space Research (ASR) entitled "Multi-constellation GNSS: Methods, Benefits, Challenges, and Geosciences Applications".

Over the past decades, the Global Positioning System (GPS), as the first space-based radio-navigation system comprised of a dedicated satellite constellation, has made remarkable contributions to scientific applications (e.g., geodesy, remote sensing, space and fundamental physics) and engineering services (e.g., surveying, navigation, and timing).  Currently, with two new and emerging constellations China’s BeiDou and Europe's Galileo, as well as the recovery of Russia's GLONASS, the world of satellite navigation is undergoing dramatic changes with excellent potential for extended and more precise and reliable positioning, navigation and timing (PNT) services.  At the moment more than 80 satellites are already in view, and about 120~150 satellites will be available once these satellite navigation systems are fully deployed in the next few years.  Meanwhile, the significant modernization of both GPS and GLONASS will add more capacity, more signals, better accuracy and interoperability, etc.  This will bring great opportunities and challenges for both scientific and engineering applications.  On one side, the new developments in GNSS stimulate a broad range of new applications; on the other side, this results in new problems and challenges in data processing which boost GNSS research.  Algorithmic advancements are needed to address the opportunities and challenges in enhancing the accuracy, availability, interoperability and integrity of high-precision GNSS applications.

This coming special issue will be an assemblage of interdisciplinary research aiming to cover the whole processing chain related to this topic, from methods and high-level products to Geosciences research.  It will include (but is not limited to) the following topics:
*	Models and algorithms for the multi-frequency and multi-constellation GNSS data processing, particularly on observation model, stochastic model, and integer ambiguity resolution
*	Strategies and products for the biases and atmospheric delays in multi-GNSS, e.g., Differenced Code Biases (DCB), Inter-frequency Biases (IFB), Inter-system Biases (ISB), Uncalibrated phase delays (UPD), satellite clock for multi-frequency, troposphere, ionosphere, phase center correction for receiver’s and satellite’s antenna
*	Models and strategy for Multi-GNSS precise orbit and clock determination, e.g., satellite attitude, solar radiation pressure, earth re-radiation pressure, antenna thrust, combination of multi-GNSS clock and orbit products, determination and prediction of real-time orbit and clock, satellite clock analysis, monitoring and assessment of Multi-GNSS system
*	Algorithm and approaches for Positioning, Velocity, and Timing (PVT) with Multi-GNSS, e.g., Time synchronization, GNSS system time establishment and keeping, Real-time Differenced (RTD), Real-time Kinematic (RTK), Precise Point Positioning (PPP), PPP with integer ambiguity resolution (PPP-AR), PPP regional augmentation
*	GNSS and other sensors (accelerometers, INS, etc.) integration for high-rate applications, Multi-sensor integration for EOS platforms
*	Multi-GNSS benefit for Geosciences, Monitoring crustal deformation and the seismic cycle of active faults, Severe weather event monitoring, Natural hazards early-warning systems, precise agriculture

Papers must be submitted electronically to http://ees.elsevier.com/asr.  To ensure that all manuscripts are correctly identified for inclusion into the special issue, authors must select "Special Issue: Multi-GNSS" when they reach the "Article Type" step in the submission process.  

Submitted papers must be written in English and they should include full affiliation postal addresses for all authors.  Only full-length papers will be considered for publication, subject to peer review by a minimum of two reviewers.  There are no page limits although the length of the paper should be appropriate for the material being presented.  While the deadline for submissions is 30 November 2017, papers will be published electronically as soon as they are accepted.  The printed issue will be assembled within a reasonable time with late papers being printed in regular issues of ASR.  All articles will be typeset at no cost to the author; there is a nominal charge for printing color figures although there is no charge for color figures on the electronic version.

Dr. Xingxing Li (lixin at gfz-potsdam.de) and Dr. Jing Guo (jingguo at whu.edu.cn) are the Guest Editors for this special issue.  Questions can be directed to Drs. Li and Guo or to the Co-Editor for Special Issues, Dr. Peggy Ann Shea (sssrc at msn.com).

The general format for submission of papers can be found on the ASR Elsevier web site at http://www.journals.elsevier.com/advances-in-space-research/