Optimization technique for pseudorange multipath mitigation using different signal selection methods

• Autorzy: Uaratanawong Valanon , Satirapod Chalermchon , Tsujii Toshiaki

Identyfikatory

DOI

10.2478/arsa-2020-0006

• Języki publikacji: EN

Abstrakty

EN

Nowadays, the use of multi-Global Navigation Satellite System (GNSS) has improved positioning accuracy in autonomous driving, navigation and tracking systems utilized by general users. However, signal quality in urban areas is degraded by poor satellite geometry and severe multipath errors, which may disturb up to a hundred-meter-ranging error as a consequence. In this study, the performance of several satellite selection methods in multipath mitigation was evaluated, based on the concept that better quality signals and more accurate solutions will be obtained, the more multipath signals can be excluded. Three methods were performed and compared: 1) azimuth-dependent elevation mask based on fisheye image technique, 2) receiver autonomous integrity monitoring (RAIM), and 3) signalto-noise ratio (SNR) mask in the SPP method. To examine the effect of the satellite selection methods on multipath error, the static test (single-point positioning (SPP) in real-time 1 Hz test) was performed in a multipath environment. The preliminary results showed a possible impact on improving the horizontal positioning accuracy of SPP. Among the three techniques assessed in this study, the results indicated that the SNR mask set at 36 dB-Hz in every elevation showed the most promising result. The SNR mask method could improve positioning accuracy by up to 46.80% compared to the SPP method.

Słowa kluczowe

EN

pseudorange multipath; satellite selection method; SPP

• Wydawca: Centrum Badań Kosmicznych PAN ; De Gruyter
• Czasopismo: Artificial Satellites : Journal of Planetary Geodesy
• Rocznik: 2020
• Tom: Vol. 55, No. 2
• Strony: 77--86
• Opis fizyczny: Bibliogr. 18 poz., rys., tab.

Twórcy

autor

Uaratanawong Valanon

• Department of Survey Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand

autor

Satirapod Chalermchon

• Department of Survey Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand

autor

Tsujii Toshiaki

• Department of Aerospace Engineering, Osaka Prefecture University, Osaka, Japan

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).