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Doppler-aided positioning in GNSS receivers - A performance analysis

Vincent, François and Vilà-Valls, Jordi and Besson, Olivier and Medina, Daniel and Chaumette, Eric (2020) Doppler-aided positioning in GNSS receivers - A performance analysis. Signal Processing, 176 (107713). Elsevier. doi: 10.1016/j.sigpro.2020.107713. ISSN 0165-1684.

[img] PDF - Preprint version (submitted draft)

Official URL: https://www.sciencedirect.com/science/article/abs/pii/S0165168420302565


The main objective of Global Navigation Satellite Systems (GNSS) is to precisely locate a receiver based on the reception of radio-frequency waveforms broadcasted by a set of satellites. Given delayed and Doppler shifted replicas of the known transmitted signals, the most widespread approach consists in a two-step algorithm. First, the delays and Doppler shifts from each satellite are estimated independently, and subsequently the user position and Velocity are computed as the solution to a Weighted Least Squares (WLS) problem. This second step conventionally uses only delay measurements to determine the user position, although Doppler is also informative. The goal of this paper is to provide simple and meaningful expressions of the positioning precision. These expressions are analysed with respect to the standard WLS algorithms, exploiting the Doppler information or not. We can then evaluate the performance improvement brought by a joint frequency and delay positioning procedure. Numerical simulations assess that using Doppler information is indeed effective when considering long observation times, and particularly useful in challenging scenarios such as urban canyons (constrained satellite visibility) or near indoor situations (weak signal conditions which need long integration times), thus providing new insights for the design of robust and high-sensitivity receivers.

Item URL in elib:https://elib.dlr.de/135598/
Document Type:Article
Title:Doppler-aided positioning in GNSS receivers - A performance analysis
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Vincent, Françoisfrancois.vincent (at) isae.frUNSPECIFIED
Vilà-Valls, JordiJordi.VILA-VALLS (at) isae-supaero.frhttps://orcid.org/0000-0001-7858-4171
Besson, Olivierolivier.besson (at) isae-supaero.frUNSPECIFIED
Medina, DanielDaniel.AriasMedina (at) dlr.dehttps://orcid.org/0000-0002-1586-3269
Chaumette, EricEric.CHAUMETTE (at) isae-supaero.frUNSPECIFIED
Date:November 2020
Journal or Publication Title:Signal Processing
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1016/j.sigpro.2020.107713
Keywords:GNSS; Positioning; Cramér-Rao Bound; Fisher Information Matrix; Multilateration; High-sensitivity; Harsh Propagation conditions;
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Communication and Navigation
DLR - Research area:Raumfahrt
DLR - Program:R KN - Kommunikation und Navigation
DLR - Research theme (Project):R - Project Navigation 4.0 (old)
Location: Neustrelitz
Institutes and Institutions:Institute of Communication and Navigation > Nautical Systems
Deposited By: Medina, Daniel
Deposited On:24 Jul 2020 10:27
Last Modified:23 Feb 2021 12:00

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