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<front>
<journal-meta>
<journal-id journal-id-type="publisher">ISPRS-Annals</journal-id>
<journal-title-group>
<journal-title>ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences</journal-title>
<abbrev-journal-title abbrev-type="publisher">ISPRS-Annals</abbrev-journal-title>
<abbrev-journal-title abbrev-type="nlm-ta">ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci.</abbrev-journal-title>
</journal-title-group>
<issn pub-type="epub">2194-9050</issn>
<publisher><publisher-name>Copernicus Publications</publisher-name>
<publisher-loc>Göttingen, Germany</publisher-loc>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="doi">10.5194/isprs-annals-X-5-2024-41-2024</article-id>
<title-group>
<article-title>Mapping Rice Paddy Areas in Nueva Ecija Using Temporal Sentinel -1 SAR Imagery</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Cueto</surname>
<given-names>Jann Rovic</given-names>
<ext-link>https://orcid.org/0009-0001-0059-3761</ext-link>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Allard</surname>
<given-names>Jessah Mei</given-names>
<ext-link>https://orcid.org/0009-0008-0975-4390</ext-link>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Obras</surname>
<given-names>Johanne Mae</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>De Asis</surname>
<given-names>Allysa Maxine</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Galut</surname>
<given-names>Arnel</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Dayrit</surname>
<given-names>Roland</given-names>
</name>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Tandoc</surname>
<given-names>John Allen</given-names>
</name>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Purio</surname>
<given-names>Mark Angelo</given-names>
</name>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
<xref ref-type="aff" rid="aff4">
<sup>4</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Dept. of Earth and Space Science, Rizal Technological University, Boni, Mandaluyong, Philippines</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>Dept. of Geology, Caraga State University, Butuan, Philippines</addr-line>
</aff>
<aff id="aff3">
<label>3</label>
<addr-line>Dept. of Electronics Engineering, Adamson University, Manila, Philippines</addr-line>
</aff>
<aff id="aff4">
<label>4</label>
<addr-line>Space Technologies and Applications Research Laboratory, Adamson University, Manila, Philippines</addr-line>
</aff>
<pub-date pub-type="epub">
<day>11</day>
<month>11</month>
<year>2024</year>
</pub-date>
<volume>X-5-2024</volume>
<fpage>41</fpage>
<lpage>48</lpage>
<permissions>
<copyright-statement>Copyright: &#x000a9; 2024 Jann Rovic Cueto et al.</copyright-statement>
<copyright-year>2024</copyright-year>
<license license-type="open-access">
<license-p>This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this licence, visit <ext-link ext-link-type="uri"  xlink:href="https://creativecommons.org/licenses/by/4.0/">https://creativecommons.org/licenses/by/4.0/</ext-link></license-p>
</license>
</permissions>
<self-uri xlink:href="https://isprs-annals.copernicus.org/articles/X-5-2024/41/2024/isprs-annals-X-5-2024-41-2024.html">This article is available from https://isprs-annals.copernicus.org/articles/X-5-2024/41/2024/isprs-annals-X-5-2024-41-2024.html</self-uri>
<self-uri xlink:href="https://isprs-annals.copernicus.org/articles/X-5-2024/41/2024/isprs-annals-X-5-2024-41-2024.pdf">The full text article is available as a PDF file from https://isprs-annals.copernicus.org/articles/X-5-2024/41/2024/isprs-annals-X-5-2024-41-2024.pdf</self-uri>
<abstract>
<p>Remote Sensing is proven to be helpful in various ways, and for an agricultural country like the Philippines, mapping in farmlands is not that common. Using the Sentinel 1 Synthetic Aperture Radar (SAR) data, the study reveals rice paddy classification brought by supervised machine learning on the municipality of Guimba, in Nueva Ecija - the Rice Bowl Capital of the country. The study in Guimba, Nueva Ecija, addresses the absence of comprehensive rice classification studies, focusing on creating a classified rice paddy map and assessing spectral indices (NDMI, NDVI, NDWI) using synthetic aperture radar and optical imager. Results show successful differentiation between rice and non-rice paddies. Temporal analysis emphasizes monitoring water availability, soil moisture, and vegetation health. Despite signs of overprediction in the CART model, its effectiveness in mapping rice paddies is notable. The spatial distribution maps contribute to targeted monitoring, enabling efficient interventions and improved agricultural practices. This research highlights the inherent use of remote sensing in rice crop management, offering valuable insights for farmers and country&apos;s food security.</p>
</abstract>
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