https://hdl.handle.net/20.500.12809/8878 Mon, 06 Apr 2026 14:32:02 GMT 2026-04-06T14:32:02Z https://hdl.handle.net/20.500.12809/10840 Network Real Time Kinematic (CORS-FKP Method) Accuracy in/Under Forest Area Kurtulgu, Zümrüt; Pırtı, Atınç The use of Global navigation satellite system (GNSS), (geolocation and navigation system) in/under forestry is increasingly being established, especially in the areas of logistics, inventory and measurements. However, the uninitialized forest user assumes that GNSS will always work with the same accuracy everywhere, while the more critical foresters assume that GNSS will probably not work properly in/under the forest. A criterion is often used to evaluate the performance of a GNSS receiver in an obstructed environment. Due to tree canopy in a forest, GNSS performance can be limited, disturbed or completely prevented. The Real Time Kinematics (RTK) approach can provide centimetre-level accuracy in a suitable environment. A more accurate and stable positioning technique was first proposed in the mid-1990s by meticulously modelling all fault components based on a known reference network called the Network Based RTK (NRTK) technique. Since then, several methods have been developed and implemented in practice, such as the Virtual Reference Station (VRS), the Flächen Korrektur Parameter (FKP) and the Master-Auxiliary Concept (MAC), which are fundamentally similar approaches. The purpose of all studies for this paper was to evaluate the achievable accuracy of the Continuously Operating Reference Stations (CORS)-FKP in the project area and check the results. The CORS-FKP results show that the solution for the forest area was reached at cm level (±10-15 cm) for horizontal accuracy. Sun, 01 Jan 2023 00:00:00 GMT https://hdl.handle.net/20.500.12809/10840 2023-01-01T00:00:00Z https://hdl.handle.net/20.500.12809/9649 Monitoring surface deformations of the reclamation site using PS interferometry: Senol Gunes sport complex (Turkey) Altıntaş, Fırat; Gökalp, Ertan Recently, structures, built on reclamation sites in the Eastern Black Sea region are quite remarkable. As one of them, Senol Gunes Medical Park Arena Sport Complex, which is located in Akyazi town of Trabzon city, is one of the rare areas in Turkey. It is very important to monitor surface deformations on this type of unfamiliar and very expensive constructions for protecting human life and property and for taking necessary precautions in advance. Persistent Scatterer Interferometry (PSI), based on the analysis of time series of multiple Synthetic Aperture Radar (SAR) data, is an invaluable geodetic tool to measure surface deformations. So, in this study, it is aimed to monitor the surface deformations on the reclamation site between the dates 20/12/2016-28/01/2020 by StaMPS (Stanford Method for Persistent Scatterers)-PSI technique using 96 Sentinel-1 SAR images. For processing, integration of European Space Agency (ESA) SentiNel Application Platform (SNAP) and StaMPS programs are used. After processing, surface deformations are determined as annual velocities (millimeter(mm)/year(y)) of PS points in the reclamation area along the line-of-sight (LOS) direction between the values -9.7 mm/y and 3.9 mm/y with an average standard deviation of 0.7 mm/y. From the results, it is understood that the area demonstrates very heterogeneous deformations rates, which occur on both horizontal and vertical directions because of the diversity and being on the reclamation site of the structures. Fri, 01 Jan 2021 00:00:00 GMT https://hdl.handle.net/20.500.12809/9649 2021-01-01T00:00:00Z https://hdl.handle.net/20.500.12809/654 Bicycle Route Infrastructure Planning Using GIS in an Urban Area: The Case of Izmir Özkan, Sevim Pelin; Senol, Fatma; Ozcam, Zeynep As a case study about Izmir (the third biggest metropolitan city in Turkey), this paper focuses on how to determine bicycle routes in already developed built environments of densely populated cities. To do so, it identifies how to deploy certain geographic information system (GIS) tools for analyzing multilayered spatial data not only at the city but also at the neighborhood level. When interrelating multiple characteristics of majorly topography, land use and population with each other, the study deploys mainly the overlay analysis and also network analysis as complementary to each other respectively at the city level and the neighborhood level. The results confirms that the use of these GIS tools for analyzing socio-spatial data especially at multiple spatial scales can support policy-makers' decision-makings about route choices in the immediate future of their city even in a "data-poor" context," such as Turkey. WOS: 000551934000012 Wed, 01 Jan 2020 00:00:00 GMT https://hdl.handle.net/20.500.12809/654 2020-01-01T00:00:00Z