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Exploring Signals on L5/E5a/B2a for Dual-Frequency GNSS Precise Point Positioning

Naciri, Nacer and Hauschild, André and Bisnath, Sunil (2021) Exploring Signals on L5/E5a/B2a for Dual-Frequency GNSS Precise Point Positioning. Sensors, 21 (6). Multidisciplinary Digital Publishing Institute (MDPI). doi: 10.3390/s21062046. ISSN 1424-8220.

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Official URL: https://www.mdpi.com/1424-8220/21/6/2046

Abstract

Due to its nature, Precise Point Positioning (PPP) depends on the GNSS measurements and quality of satellite correction products used to relatively quickly provide precise and accurate positions. With the rapid evolution of Global Navigation Satellite Systems (GNSSs), new frequencies and signals are being broadcast, which have a positive impact on PPP performance. This paper presents, for the first time, a comprehensive analysis of PPP performance from these new GPS, Galileo and BeiDou-2/3 signals, which are not yet commonly used for PPP, with correct mitigation of errors such as the estimation of GPS Block-IIF L5 variations. Satellite orbits and clocks, as well as GPS Block-IIF L5 corrections, are estimated in real-time using DLR’s RETICLE engine, while the user processing is performed with York University’s PPP engine. First, as a reference, PPP performance is assessed on widely used signals: GPS L1/L2, Galileo E1/E5a, and BeiDou-2/3 B1-2/B3. Horizontal and vertical rms of 2.3 and 2.6 cm, respectively, are achieved in static processing and 5.4 and 7.5 cm in kinematic processing after 1 h of processing using real-time satellite correction products. The compatibility of BeiDou-2 and BeiDou-3 on the shared B1-2/B3 frequencies is analyzed and discrepancies in the receiver clock are found. Next, since all three constellations share two common frequencies, the paper focuses on analyzing PPP performance of GPS, Galileo and BeiDou-3 on [L1, E1, B1] at 1575.42 MHz and [L5, E5a, B2a] at 1176.45 MHz. Horizontal and vertical rms of 6.9 and 7.1 cm are achieved in kinematic processing. The effect of the known GPS Block-IIF L5 biases is studied as well, as it is shown to affect the receiver position and clock, as well as the ionospheric estimates and ambiguities. Average improvements of 15% and 20% in the horizontal and vertical rms, respectively, are observed when these biases are mitigated.

Item URL in elib:https://elib.dlr.de/141380/
Document Type:Article
Title:Exploring Signals on L5/E5a/B2a for Dual-Frequency GNSS Precise Point Positioning
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Naciri, Nacernnaciri (at) yorku.cahttps://orcid.org/0000-0002-4146-2338
Hauschild, Andréandre.hauschild (at) dlr.dehttps://orcid.org/0000-0002-0172-3492
Bisnath, Sunilsbisnath (at) yorku.caUNSPECIFIED
Date:14 March 2021
Journal or Publication Title:Sensors
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:21
DOI :10.3390/s21062046
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
ISSN:1424-8220
Status:Published
Keywords:Precise Point Positioning, GPS block IIF, GPS L5 variations, BeiDou-3, Galileo
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space System Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Space System Technology
DLR - Research theme (Project):R - Raumflugbetrieb / Kontrollzentrums-Technologie (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Space Operations and Astronaut Training > Space Flight Technology
Deposited By: Hauschild, André
Deposited On:17 Mar 2021 17:30
Last Modified:17 Mar 2021 17:30

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