GEODESY, CARTOGRAPHY, AND AERIAL PHOTOGRAPHY

Abstract

The Svalbard Islands are located in the Arctic Ocean, halfway between Norway and the North Pole. Because of this, the Svalbard Islands exhibit a number of special properties that make it an interesting region for studying interactions between the atmosphere, sea ice, and ocean. In this study, satellite signals of three points (NABG, NYA2 and NYAL) on the island of Svalbard in the Barents Sea were examined. On January 8, 2022, signal jamming effects appeared at all three points. From these two points (NYA2, NYAL), it was obvious that GLONASS, Galileo and Beidou satellites were also recorded in the receivers as well as GPS satellites. For this reason, the effect of the jamming effect on the GPS signals on the position accuracy was investigated using both static and kinematic methods. In addition, both static and kinematic processing at these two points was performed with GLONASS-Galileo-Beidou satellite combinations in order to eliminate the GPS jamming effect. Although the GPS jamming effect is not obtained in large values ​​in the static process, when only GPS satellites are used in the kinematic process, it reaches approximately 5 meters as the maximum horizontal coordinate difference. The maximum height difference recorded was approximately 15 meters. The difference in coordinates between the kinematic and static processes, as determined through the use of GLONASS, Galileo, and Beidou satellites, was around 5 cm. However, in terms of height values, it reached up to about 10 cm. In the Svalbard Islands, when GPS signals are exposed to interference, satisfactory results were obtained by using GLONASS-Galileo-Beidou satellites.