GNSS Signal Obstruction Removal Tool for Evaluating and Improving Position Accuracy in Satellite Networks

Title

GNSS Signal Obstruction Removal Tool for Evaluating and Improving Position Accuracy in Satellite Networks

Creator

Hirota K.; Goswami B.; Kulkarni M.

Description

The positioning accuracy of Global Navigation Satellite System (GNSS) is largely affected by the site's surroundings. However, the methods to simulate GNSS signal obstruction and the nature of signal obstruction have not yet been explored fully. In this research, we investigated a way to remove the signals received from a specific region by specifying azimuth and elevation from GNSS observation files and evaluating how the removal of signals affects GNSS positioning accuracy. In addition, we also investigated the signal blockage for buildings of certain dimensions and a mountain. Python was used as a programming language to develop a program for the signal removal. RTKPOST was used for the GNSS data processing, and RTKPLOT was used for the visualisation of processed data and analysis of positioning accuracy. We successfully developed a Python shell script to remove the signals in GNSS data file from specific region by specifying azimuth and elevation. It was also found that removing signals from azimuth 0 to 100 degree and elevation 0 to 30 degree increased the positioning accuracy within a low multipath dataset. However, when the maximum elevation angle was increased to 45 degrees, positioning accuracy degraded, indicating that the signal from certain elevations have a positive or negative impact on positioning accuracy. Further research avenues are explored as an extension of work done here. 2023 IEEE.

Source

2023 5th International Conference on Electrical, Computer and Communication Technologies, ICECCT 2023

Date

2023-01-01

Publisher

Institute of Electrical and Electronics Engineers Inc.

Subject

azimuth and elevation; GNSS; positioning performance; RTKLIB; Satellite; signal obstruction

Coverage

Hirota K., Queensland University of Technology, Brisbane, Australia; Goswami B., Queensland University of Technology, Brisbane, Australia; Kulkarni M., CHRIST (Deemed to Be University), Bangalore, India

Rights

Restricted Access

Relation

ISBN: 978-166549360-4

Format

Online

Language

English

Type

Conference paper

Identifier

https://doi.org/10.1109/ICECCT56650.2023.10179721

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