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Advancing Position, Navigation, and Timing (PNT) Service Using Satellite Navigation Technology

A special issue of Remote Sensing (ISSN 2072-4292). This special issue belongs to the section "Satellite Missions for Earth and Planetary Exploration".

Deadline for manuscript submissions: 30 April 2025 | Viewed by 559

Special Issue Editors

1. Department of Space Information, Space Engineering University, Beijing 101416, China
2. Key Laboratory of Smart Earth, Beijing 100094, China
Interests: GNSS PPP; ionosphere sounding; GNSS seismology; satellite navigation countermeasure

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Guest Editor
Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China
Interests: satellite navigation and remote sensing; ionosphere/thermosphere sounding; data assimilation

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Guest Editor
School of Marine Science and Engineering, Nanjing Normal University, Nanjing 210023, China
Interests: GNSS; PPP; GNSS timing; GNSS POD

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Guest Editor
School of Earth and Planetary Sciences, Curtin University, Perth, WA 6845, Australia
Interests: LEO-PNT systems; LEO POD

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Guest Editor
GNSS Research Center of Wuhan University, Wuhan, China
Interests: GNSS PNT performance assessment; GNSS POD; GNSS coordinate time series analysis

Special Issue Information

Dear Colleagues,

Positioning, navigation, and timing (PNT) technology is a cornerstone for numerous sectors, including transportation, communication, finance, agriculture, and public safety. It provides accurate and reliable location and time information, ensuring these critical infrastructures’ seamless operation and efficient management. The advent of multi-Global Navigation Satellite Systems (GNSS), such as the US’s GPS, Russia’s GLONASS, China’s BeiDou, and the EU’s Galileo, along with regional systems like Japan’s QZSS and India’s IRNSS, has significantly advanced PNT services, marking a new era in their development. Furthermore, emerging Low Earth Orbit (LEO) PNT systems are poised to enhance PNT resilience in urban environments and offer better protection against GNSS jamming and spoofing.

This Special Issue is dedicated to exploring the wide-ranging PNT technologies based on satellite navigation. We invite original research articles and reviews that delve into various aspects, including but not limited to constellations, signals, orbit determination, PNT theory, algorithms, models, and their applications in engineering and Earth sciences, as well as multi-sensor integration.

Topics of interest for this Special Issue include, but are not limited to:

  • Integrated PNT;
  • Resilient PNT;
  • Micro PNT Technology;
  • Secure PNT;
  • GNSS PPP and PPP-RTK;
  • GNSS Timing;
  • GNSS Orbiting Determination and Modeling;
  • GNSS Atmospheric Sensing;
  • GNSS Ionosphere and Space Weather;
  • Integrated Navigation and Smart Applications;
  • Satellite Navigation countermeasure;
  • Future LEO-PNT Systems;
  • Broadband PNT Constellations (Signal of Opportunity);
  • LEO Precise Orbit Determination (POD).

Dr. Ke Su
Dr. Liangliang Yuan
Dr. Yulong Ge
Dr. Amir Allahvirdi-Zadeh
Dr. Guo Chen
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Remote Sensing is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • GNSS
  • PNT
  • PPP
  • GNSS timing
  • GNSS orbiting determination
  • GNSS meteorology
  • GNSS ionosphere

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Published Papers (1 paper)

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Research

22 pages, 15337 KiB  
Article
BDS-3/GNSS Undifferenced Pseudorange and Phase Time-Variant Mixed OSB Considering the Receiver Time-Variant Biases and Its Benefit on Multi-Frequency PPP
by Guoqiang Jiao, Ke Su, Min Fan, Yuze Yang and Huaquan Hu
Remote Sens. 2024, 16(23), 4433; https://doi.org/10.3390/rs16234433 - 27 Nov 2024
Viewed by 210
Abstract
The legacy Global Navigation Satellite System (GNSS) satellite clock offsets obtained by the dual-frequency undifferenced (UD) ionospheric-free (IF) model absorb the code and phase time-variant hardware delays, which leads to the inconsistency of the precise satellite clock estimated by different frequencies. The dissimilarity [...] Read more.
The legacy Global Navigation Satellite System (GNSS) satellite clock offsets obtained by the dual-frequency undifferenced (UD) ionospheric-free (IF) model absorb the code and phase time-variant hardware delays, which leads to the inconsistency of the precise satellite clock estimated by different frequencies. The dissimilarity of the satellite clock offsets generated by different frequencies is called the inter-frequency clock bias (IFCB). Estimates of the IFCB typically employ epoch-differenced (ED) geometry-free ionosphere-free (GFIF) observations from global networks. However, this method has certain theoretical flaws by ignoring the receiver time-variant biases. We proposed a new undifferenced model coupled with satellite clock offsets, and further converted the IFCB into the code and phase time-variant mixed observable-specific signal bias (OSB) to overcome the defects of the traditional model and simplify the bias correction process of multi-frequency precise point positioning (PPP). The new model not only improves the mixed OSB performance, but also avoids the negative impact of the receiver time-variant biases on the satellite mixed OSB estimation. The STD and RMS of the original OSB can be improved by 7.5–60.9% and 9.4–66.1%, and that of ED OSB (it can reflect noise levels) can be improved by 50.0–87.5% and 60.0–88.9%, respectively. Similarly, the corresponding PPP performance for using new mixed OSB is better than that of using the traditional IFCB products. Thus, the proposed pseudorange and phase time-variant mixed OSB concept and the new undifferenced model coupled with satellite clock offsets are reliable, applicable, and effective in multi-frequency PPP. Full article
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