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Full-Text Articles in Physical Sciences and Mathematics
Performance Assessment Of Gnss Augmentation System Using Quasi-Zenith Satellite System For Real-Time Precise Positioning Method In Indonesia, Irwan Gumilar, Brian Bramanto, Rifky Yusuf Ananta, Dwi Haryanto, Hasanuddin Zaenal Abidin, Surono Surono, Nobuhiro Kishimoto
Performance Assessment Of Gnss Augmentation System Using Quasi-Zenith Satellite System For Real-Time Precise Positioning Method In Indonesia, Irwan Gumilar, Brian Bramanto, Rifky Yusuf Ananta, Dwi Haryanto, Hasanuddin Zaenal Abidin, Surono Surono, Nobuhiro Kishimoto
International Journal of Geospatial and Environmental Research
The Quasi-Zenith Satellite System (QZSS) is one of the GNSS technologies owned by the Japanese government, which orbits around East Asia, Asia Pacific, and Oceania. One of the advantages of the QZSS satellite is that it corrects the measurements using precise ephemeris, clock, and other augmenting corrections, and is primarily used for the Real-Time Precise Point Positioning (RTPPP) method. This study aimed to examine the QZSS system's performance for RTPPP measurements in Indonesia. Magellan System Japan's (MSJ) receiver was applied to collect the GNSS and the augmenting data to perform the RTPPP. RTPPP method was then made into the static …
A Comparative Study Of Delineated Watersheds Using Aster And Srtm In Johor, Malaysia, Nafisah Khalid, Maisarah Abdul Halim, Siti Nur A’Tirah Shahimi
A Comparative Study Of Delineated Watersheds Using Aster And Srtm In Johor, Malaysia, Nafisah Khalid, Maisarah Abdul Halim, Siti Nur A’Tirah Shahimi
International Journal of Geospatial and Environmental Research
The availability of watershed delineation that has been generated from DEM data is difficult to obtain and the accessibility of DEM data which are unrestricted and precise are hard to obtain in Malaysia. The aim of this study is to examine the accuracy of watershed delineation between Digital Elevation Model (DEM) from ASTER and SRTM in Johor State Malaysia. In this study, free online data sources from USGS website are used to delineate watershed from ASTER and SRTM satellite imageries. The hydrological modelling tool namely ArcSWAT is utilized to delineate watersheds for both DEM datasets. Both DEM data that had …