Multipath Detection and Mitigation from GNSS Observations Using Antenna Arrays

Mohanad Ahmed; Tarig Ballal; Xing Liu; Tareq Y. Al-Naffouri

doi:10.1109/PLANS53410.2023.10139949

Multipath Detection and Mitigation from GNSS Observations Using Antenna Arrays

Mohanad Ahmed
, Tarig Ballal
, Xing Liu
, Tareq Y. Al-Naffouri

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

3 Scopus citations

Abstract

We consider the problem of detecting and mitigating the effect of multipath on GNSS observations. In particular, we focus on carrier-phase observations that are collected at an array of GNSS antennas. We exploit a special antenna array geometry, synchronization among the GNSS receivers, and an attitude estimate provided by an attitude filter or an IMU, to develop a technique to identify the satellite observations that are contaminated with multipath. The proposed technique leverages the antenna geometry to rabidly estimate the attitude parameters for various satellite combinations. Next, a dedicated decision-making algorithm is used to identify the satellite observations affected by multipath. Our simulation results demonstrate the effectiveness of the proposed approach in detecting the occurrence of multipath with high success rates. By rejecting the multipath-affected observations, we show remarkable performance gains when attitude determination is considered as an example application.

Original language	English
Title of host publication	2023 IEEE/ION Position, Location and Navigation Symposium, PLANS 2023
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	875-882
Number of pages	8
ISBN (Electronic)	9781665417723
DOIs	https://doi.org/10.1109/PLANS53410.2023.10139949
State	Published - 2023
Externally published	Yes
Event	2023 IEEE/ION Position, Location and Navigation Symposium, PLANS 2023 - Monterey, United States Duration: 24 Apr 2023 → 27 Apr 2023

Publication series

Name	2023 IEEE/ION Position, Location and Navigation Symposium, PLANS 2023

Conference

Conference	2023 IEEE/ION Position, Location and Navigation Symposium, PLANS 2023
Country/Territory	United States
City	Monterey
Period	24/04/23 → 27/04/23

Bibliographical note

Publisher Copyright:
© 2023 IEEE.

Keywords

Antenna array
Atti-tude
GNSS Multipath
Multipath Mitigation
NLOS

ASJC Scopus subject areas

Instrumentation
Aerospace Engineering
Automotive Engineering
Electrical and Electronic Engineering
Electronic, Optical and Magnetic Materials
Control and Optimization

Access to Document

10.1109/PLANS53410.2023.10139949

Cite this

Ahmed, M., Ballal, T., Liu, X., & Al-Naffouri, T. Y. (2023). Multipath Detection and Mitigation from GNSS Observations Using Antenna Arrays. In 2023 IEEE/ION Position, Location and Navigation Symposium, PLANS 2023 (pp. 875-882). (2023 IEEE/ION Position, Location and Navigation Symposium, PLANS 2023). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PLANS53410.2023.10139949

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title = "Multipath Detection and Mitigation from GNSS Observations Using Antenna Arrays",

abstract = "We consider the problem of detecting and mitigating the effect of multipath on GNSS observations. In particular, we focus on carrier-phase observations that are collected at an array of GNSS antennas. We exploit a special antenna array geometry, synchronization among the GNSS receivers, and an attitude estimate provided by an attitude filter or an IMU, to develop a technique to identify the satellite observations that are contaminated with multipath. The proposed technique leverages the antenna geometry to rabidly estimate the attitude parameters for various satellite combinations. Next, a dedicated decision-making algorithm is used to identify the satellite observations affected by multipath. Our simulation results demonstrate the effectiveness of the proposed approach in detecting the occurrence of multipath with high success rates. By rejecting the multipath-affected observations, we show remarkable performance gains when attitude determination is considered as an example application.",

keywords = "Antenna array, Atti-tude, GNSS Multipath, Multipath Mitigation, NLOS",

author = "Mohanad Ahmed and Tarig Ballal and Xing Liu and Al-Naffouri, \{Tareq Y.\}",

note = "Publisher Copyright: {\textcopyright} 2023 IEEE.; 2023 IEEE/ION Position, Location and Navigation Symposium, PLANS 2023 ; Conference date: 24-04-2023 Through 27-04-2023",

year = "2023",

doi = "10.1109/PLANS53410.2023.10139949",

language = "English",

series = "2023 IEEE/ION Position, Location and Navigation Symposium, PLANS 2023",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

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Ahmed, M, Ballal, T, Liu, X & Al-Naffouri, TY 2023, Multipath Detection and Mitigation from GNSS Observations Using Antenna Arrays. in 2023 IEEE/ION Position, Location and Navigation Symposium, PLANS 2023. 2023 IEEE/ION Position, Location and Navigation Symposium, PLANS 2023, Institute of Electrical and Electronics Engineers Inc., pp. 875-882, 2023 IEEE/ION Position, Location and Navigation Symposium, PLANS 2023, Monterey, United States, 24/04/23. https://doi.org/10.1109/PLANS53410.2023.10139949

Multipath Detection and Mitigation from GNSS Observations Using Antenna Arrays. / Ahmed, Mohanad; Ballal, Tarig; Liu, Xing et al.
2023 IEEE/ION Position, Location and Navigation Symposium, PLANS 2023. Institute of Electrical and Electronics Engineers Inc., 2023. p. 875-882 (2023 IEEE/ION Position, Location and Navigation Symposium, PLANS 2023).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

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AU - Ahmed, Mohanad

AU - Ballal, Tarig

AU - Liu, Xing

AU - Al-Naffouri, Tareq Y.

PY - 2023

Y1 - 2023

N2 - We consider the problem of detecting and mitigating the effect of multipath on GNSS observations. In particular, we focus on carrier-phase observations that are collected at an array of GNSS antennas. We exploit a special antenna array geometry, synchronization among the GNSS receivers, and an attitude estimate provided by an attitude filter or an IMU, to develop a technique to identify the satellite observations that are contaminated with multipath. The proposed technique leverages the antenna geometry to rabidly estimate the attitude parameters for various satellite combinations. Next, a dedicated decision-making algorithm is used to identify the satellite observations affected by multipath. Our simulation results demonstrate the effectiveness of the proposed approach in detecting the occurrence of multipath with high success rates. By rejecting the multipath-affected observations, we show remarkable performance gains when attitude determination is considered as an example application.

AB - We consider the problem of detecting and mitigating the effect of multipath on GNSS observations. In particular, we focus on carrier-phase observations that are collected at an array of GNSS antennas. We exploit a special antenna array geometry, synchronization among the GNSS receivers, and an attitude estimate provided by an attitude filter or an IMU, to develop a technique to identify the satellite observations that are contaminated with multipath. The proposed technique leverages the antenna geometry to rabidly estimate the attitude parameters for various satellite combinations. Next, a dedicated decision-making algorithm is used to identify the satellite observations affected by multipath. Our simulation results demonstrate the effectiveness of the proposed approach in detecting the occurrence of multipath with high success rates. By rejecting the multipath-affected observations, we show remarkable performance gains when attitude determination is considered as an example application.

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KW - Multipath Mitigation

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Ahmed M, Ballal T, Liu X, Al-Naffouri TY. Multipath Detection and Mitigation from GNSS Observations Using Antenna Arrays. In 2023 IEEE/ION Position, Location and Navigation Symposium, PLANS 2023. Institute of Electrical and Electronics Engineers Inc. 2023. p. 875-882. (2023 IEEE/ION Position, Location and Navigation Symposium, PLANS 2023). doi: 10.1109/PLANS53410.2023.10139949

Multipath Detection and Mitigation from GNSS Observations Using Antenna Arrays

Abstract

Publication series

Conference

Bibliographical note

Keywords

ASJC Scopus subject areas

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