Simulation of ionospheric error on GPS signals due to changes in the direction of mobile station positions in differential GPS
Item
Title (Dublin Core)
Simulation of ionospheric error on GPS signals due to changes in the direction of mobile station positions in differential GPS
Description (Dublin Core)
<p class="keywords">Ionospheric propagation delay is one of the major sources of error in global positioning system (GPS) precision. Therefore, accurate estimation of the ionospheric delay is required to correct GPS positional calculations. This study investigates the simulation of ionospheric propagation delays of GPS signals caused by changes in the direction of mobile station positions in differential GPS. A comparison was made between short-distance (≤10 km) differential GPS ionospheric errors at rover stations and those at a single base station located at the University Kebangsaan Malaysia (2˚ 55' N, 101˚46'E). In this simulation, four different baseline orientations were considered: North (0˚), East (90˚), South (180˚) and West (270˚) of the University Kebangsaan Malaysia GPS station. Without consideration of any irregularities, the ionospheric errors at the northern rover station were nearly symmetrical to those at the southern station, which is elevation dependent. Similarly, there were nearly symmetrical ionospheric errors for the following orientation pairs: East (90˚) and West (270˚); Northwest (315˚) and Southeast (135˚); and Northeast (45˚) and Southwest (225˚). To maximize the quality of GPS positioning, all ionospheric errors need be considered so that accurate corrections can be made and precision can be enhanced.</p>
Creator (Dublin Core)
Mahamod Ismail
Mardina Abdullah
Siti Sarah Nik Zulkifli
Subject (Dublin Core)
Ionosphere, Ray-tracing, dGPS, Baseline.
Meteorology. Climatology
QC851-999
Geophysics. Cosmic physics
QC801-809
Publisher (Dublin Core)
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Date (Dublin Core)
2011-06-01T00:00:00Z
Type (Dublin Core)
article
Identifier (Dublin Core)
10.4401/ag-4973
1593-5213
2037-416X
https://doaj.org/article/b90b9347358348f4b0b4963a5504d713
Source (Dublin Core)
Annals of Geophysics, Vol 54, Iss 6 (2011)
Language (Dublin Core)
EN
Relation (Dublin Core)
http://www.annalsofgeophysics.eu/index.php/annals/article/view/4973
https://doaj.org/toc/1593-5213
https://doaj.org/toc/2037-416X
Provenance (Dublin Core)
Journal Licence: CC BY