Yazar "Ozulu, Ibrahim Murat" seçeneğine göre listele

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    DETERMINATION OF RESERVOIR SEDIMENTATION WITH BATHYMETRIC SURVEY: A CASE STUDY OF OBRUK DAM LAKE
    (Parlar Scientific Publications (P S P), 2019) Ilci, Veli; Ozulu, Ibrahim Murat; Alkan, Reha Metin; Erol, Serdar; Uysal, Murat; Kalkan, Yunus; Seker, Dursun Zafer
    The sediments that transported in different ways to dam reservoirs decrease water storage capacity and shortens the reservoir lifetime. This forces the manager of water resources to monitor changes in water floor topography, and determine the sediment amount and sedimentation rate. This is very important in order to maintain current operations, make correct planning for future needs, take necessary precautions to prevent having a shorter lifetime than the projected durations and prolong the dams' lifetime. Although there are several different methods for determining the amount and rate of sediments, the most commonly used one is the bathymetric survey. In this study, in order to determine sedimentation of dams, a bathymetric survey was conducted in a part of the Obruk Dam Lake located in the Corum province of Turkey with the most recent geodetic equipment. The obtained results from the bathymetric survey are considered as initial results for the upcoming measurements to monitor the changes in sediment amount and sedimentation rate in the selected part of the Obruk Dam. The results imply that; the bathymetric surveying method is a powerful tool to estimate reservoir sedimentation.
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    THE USAGE OF UNMANNED AERIAL VEHICLES (UAVs) FOR 3D MAPPING OF ARCHAEOLOGICAL SITES
    (Parlar Scientific Publications (P S P), 2019) Ilci, Veli; Ozulu, Ibrahim Murat; Bilgi, Serdar; Alkan, Reha Metin
    In archaeological sites, mapping, documentation, registration, and visualization of cultural heritage is very important for both cultural heritage's conservation, understanding of the historical importance and to transmit future generations. Traditionally, mapping and documentation studies are carried out through terrestrial measurements performed during excavation or at the end of each workday. Together with the improvements in image acquisition and processing techniques, Unmanned Aerial Vehicles (UAVs) have become an alternative for many applications including archaeological areas, historic sites, and cultural heritage buildings with accurately and efficiently. The UAVs provide the user low cost, fast data collection even in real-time, and application flexibility for mapping especially of small areas. This study aimed to investigate the usability of UAVs for 3D mapping of archaeological sites. For this purpose, two measurement campaigns were carried out in two different archaeological sites, AlacahoyUk and Sapinuva. From the outcome of this study, it is clear that aerial maps and 3D models of the studied sites were produced with UAV measurements within a cm to dm level of accuracy in a fast and cost-effective manner. In general, the results show that UAVs can be used for many archaeological mapping and documentation studies as a strong alternative to high cost and labor conventional terrestrial and photogrammetric surveying methods.
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    Öğe
    Two-Dimensional Error Estimation in Point Positioning with Fuzzy Logic
    (Ieee, 2018) Bulbul, Mehmet Akif; Ozturk, Celal; Ilci, Veli; Ozulu, Ibrahim Murat
    Developments in technology and computer aims to facilitate the human life. Every new technology developed by computer science is tried to integrate into systems. Rapidly developing satellite, navigation and geographic information systems also use computer science. The position information that these systems provide to people has had too much importance in recent years. The low margin of error in point position estimation has become a criterion for developed technologies. In this study, a model based on fuzzy logic is developed for estimation of point position error. With this derived model, point position error prediction has been determined and the accuracy of estimates of the system has been measured.