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All Journal International Journal of Remote Sensing and Earth Sciences (IJReSES) Jurnal Geografi LIngkungan Tropik (Journal of Geography of Tropical Environments)
Fitriani, Sarah Putri
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Earth & Planetary Sciences

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FISHING-VESSEL DETECTION USING SYNTHETIC APERTURE RADAR (SAR) SENTINEL-1 (CASE STUDY: JAVA SEA) Fitriani, Sarah Putri; Gaol, Jonson Lumban; Kushardono, Dony
International Journal of Remote Sensing and Earth Sciences (IJReSES) Vol 16, No 2 (2019)
Publisher : National Institute of Aeronautics and Space of Indonesia (LAPAN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (809.168 KB) | DOI: 10.30536/j.ijreses.2019.v16.a3235

Abstract

The synthetic aperture radar (SAR) instrument of Sentinel-1 is a remote sensing technology being developed to enable the detection of vessel distribution. The purpose of this research is to study fishing-vessel detection using SAR Sentinel-1 data. In this study, the constant false alarm rate method (CFAR) for Sentinel-1 data is used for the detection of fishing vessels in Indramayu sea waters. The data used to detect ships includes SAR Sentinel-1A images and vessel monitoring system (VMS) data acquired on 8 March and 20 March 2018. SAR Sentinel-1 imagery data is obtained through pre-processing and object identification using Sentinel Application Platform (SNAP) software. Overlay analysis is then used to enable discrimination of immovable and movable objects and validation of ships detected from SAR Sentinel-1 imagery is performed using VMS data. From overlay analysis, 46 ships were detected on 8 March 2018 and 39 ships on 20 March 2018. Of all the ship points detected using SAR Sentinel-1, 7.06% could be detected by VMS data while 92.94% could not. The number of ships detected by SAR Sentinel-1 is greater than those detected by VMS because not all ships use VMS devices. 
Assessment Site Attraction in Gunung Mas Agrotourism, Bogor Regency, West Java Fitriani, Sarah Putri; Manessa, Masita Dwi Mandini; Tambunan, Mangapul Parlindungan; Tambunan, Rudy Parluhutan
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 7, No. 1
Publisher : UI Scholars Hub

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Abstract

Gunung Mas Agrotourism is a sub-unit managed by PT Perkebunan Nusantara VIII (PTPN VIII) under the management of Agrotourism and is the largest contributor to PTPN VIII's revenue, which is 70% and most of it comes from the tourism sector. The facilities and activities offered by Gunung Mas Agrotourism also vary, from lodging, restaurants, tourist attractions, and supporting facilities to meet the tourists' needs. To find out the magnitude of tourist interest in tourist attractions, an analysis of the attractiveness of tourist attractions is needed. This study aims to assess tourist attractions based on tourist preferences as well as the availability and accessibility of facilities in the Gunung Mas Agrotourism area, Bogor Regency. The method used is a survey method with a quantitative approach with the Analytical Hierarchy Process (AHP). The results of this study show that horseback riding got the highest meanwhile ATV got the lowest value of attractiveness. It indicates that the easier accessibility as well as the higher number of facilities to a tourist attraction, the greater the value of attractiveness.
Co-Authors Dony Kushardono Jonson Lumban Gaol MASITA DWI MANDINI MANESSA, MASITA DWI MANDINI Tambunan, Mangapul Parlindungan Tambunan, Rudy Parluhutan