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            <front>

                <journal-meta>
                                    <journal-id></journal-id>
            <journal-title-group>
                                                                                    <journal-title>Geomatik</journal-title>
            </journal-title-group>
                                        <issn pub-type="epub">2564-6761</issn>
                                                                                            <publisher>
                    <publisher-name>Murat YAKAR</publisher-name>
                </publisher>
                    </journal-meta>
                <article-meta>
                                        <article-id pub-id-type="doi">10.29128/geomatik.1332997</article-id>
                                                                <article-categories>
                                            <subj-group  xml:lang="en">
                                                            <subject>Photogrammetry and Remote Sensing</subject>
                                                    </subj-group>
                                            <subj-group  xml:lang="tr">
                                                            <subject>Fotogrametri ve Uzaktan Algılama</subject>
                                                    </subj-group>
                                    </article-categories>
                                                                                                                                                        <title-group>
                                                                                                                        <article-title>Optik ve radar görüntüleri ile aşırı gradyan artırma algoritması kullanılarak tarımsal ürün desen tespiti</article-title>
                                                                                                    </title-group>
            
                                                    <contrib-group content-type="authors">
                                                                        <contrib contrib-type="author">
                                                                    <contrib-id contrib-id-type="orcid">
                                        https://orcid.org/0000-0003-4016-4408</contrib-id>
                                                                <name>
                                    <surname>Şimşek</surname>
                                    <given-names>Fatih Fehmi</given-names>
                                </name>
                                                                    <aff>TARIM VE ORMAN BAKANLIĞI</aff>
                                                            </contrib>
                                                                                </contrib-group>
                        
                                        <pub-date pub-type="pub" iso-8601-date="20240415">
                    <day>04</day>
                    <month>15</month>
                    <year>2024</year>
                </pub-date>
                                        <volume>9</volume>
                                        <issue>1</issue>
                                        <fpage>54</fpage>
                                        <lpage>68</lpage>
                        
                        <history>
                                    <date date-type="received" iso-8601-date="20230726">
                        <day>07</day>
                        <month>26</month>
                        <year>2023</year>
                    </date>
                                                    <date date-type="accepted" iso-8601-date="20231005">
                        <day>10</day>
                        <month>05</month>
                        <year>2023</year>
                    </date>
                            </history>
                                        <permissions>
                    <copyright-statement>Copyright © 2016, Geomatik</copyright-statement>
                    <copyright-year>2016</copyright-year>
                    <copyright-holder>Geomatik</copyright-holder>
                </permissions>
            
                                                                                                <abstract><p>Bu çalışmada, Sentinel-1 Sentetik Açıklıklı Radar (Synthetic Aperture Radar-SAR) ve Sentinel-2 (Multispektral) verilerinin, sınıflandırma ile tarımsal ürün deseni tespitine olan etkisi araştırılmıştır. Çalışma alanı Çukurova Ovası sınırları içerisinde bulunan yaklaşık 2200 km2’lik alanı kapsamaktadır. Çalışma kapsamında 2021 yılına ait çok zamanlı Sentinel-1 ve Sentinel-2 görüntüleri ile aşırı gradyan arttırma (XGBoost) algoritması kullanılarak mısır, pamuk, buğday, ayçiçeği, karpuz, yer fıstığı ve narenciye ağaçlarının yanı sıra, buğdaydan sonra ekilen ikinci ürün mısır, soya ve pamuk ürünlerini içeren tarımsal ürün desen sınıflandırması yapılmıştır. Çalışmada referans parsel olarak Çiftçi Kayıt Sistemi (ÇKS)’ne kayıtlı parseller kullanılmış olup, ÇKS verisinin yer doğruluk verisi olarak kullanılmasından önce ön düzenleme ve kural tabanlı silme işlemleri gerçekleştirilmiş, ardından hatalı ve yanlış beyanlar elemine edilmiştir. Çalışmada yalnızca Sentinel-1 verileri ile (VH, VV, VH/VV) yapılan sınıflandırma sonucu genel doğruluk değeri %72.3, yalnızca Sentinel-2 verileri ile (R, G, B, NIR, NDVI) yapılan sınıflandırma sonucu genel doğruluk değeri %87.2, Sentinel-1 ve Sentinel-2 verilerinin birlikte kullanıldığı sınıflandırma sonucunda ise genel doğruluk değeri %92.1 olarak hesaplanmıştır. Sınıflandırma çalışması ürün bazında incelendiğinde en düşük doğruluğu yine sadece Sentinel-1 verileri ile hesaplanan sınıflara ait iken, en yüksek doğruluk oranı Sentinel-1 ve Sentinel-2 verilerinin birlikte kullanıldığı sınıflandırmaya ait olduğu tespit edilmiştir. Özellikle çok yakın fenolojik dönemlere sahip olan ikinci ürünlerde Sentinel-1 ve Sentinel-2 verilerinin birlikte kullanılmasının, başarım oranını oldukça arttığı tespit edilmiştir.</p></abstract>
                                                            
            
                                                            <kwd-group>
                                                    <kwd>Uzaktan Algılama</kwd>
                                                    <kwd>  Sentinel-1</kwd>
                                                    <kwd>  Sentinel-2</kwd>
                                                    <kwd>  ÇKS</kwd>
                                                    <kwd>  XGBoost</kwd>
                                            </kwd-group>
                            
                                                                                                                        </article-meta>
    </front>
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