Instrumen gdem aster diluncurkan dengan pesawat ruang angkasa nasa terra pada bulan desember 1999 yang memiliki kemampuan alongtrack stereoskopik menggunakan band spektral inframerah dekat untuk. The aster advanced spaceborne thermal emission and reflection radiometer instrument was built by meti and launched onboard nasa s terra spacecraft in. Dem srtm 90m versi 4 dan dem aster 30m versi 3 seluruh. The methodology used to produce the aster gdem involved automated processing of 2. Aster2 gdem terrain installation 1 page technical note aster2 gdem terrain installation follow these steps to install, and use, aster2 gdem format terrain data. Aster global digital elevation model version 2 summary.
The gdem is produced with 30meter 98feet postings, and is formatted as 23,000 onebyone degree tiles. Resolusi aster gdem bisa mencapai antara 30 45 meter. The absolute vertical accuracy of gdem v3 was calculated by comparison with more than 23,000 independent reference geodetic ground control points from the u. Wist or the aster gdem ordering site, maintained by the earth remote sensing data analysis center ersdac in japan. Agustin castillo has a nice short tutorial on how to download aster gdem tiles. The first aster gdem was released in 2009, with version 2 being released in 2011.
Dengan tambahan 260,000 stereopair images sebagai peningkatan data dem sebelumnya. The aster global digital elevation model gdem is available at no charge to users worldwide via electronic download. With this release, an additional global product is now available. After our trial and test, the software was found to be official, secure and free. Space images asters global digital elevation model gdem. Mosaicking and reprojection to utm32wgs84 of aster gdem tiles of the area using gdalwarp. Aster gdem and astwbd tiles may be downloaded directly from. Version 2 of these data was released in october 2011 and is a significant improvement. Advanced spaceborne thermal emission and reflection.
Creation of a difference map to the provincial dem r. Saya belum bisa pastikan apakah apakah fitur download data aster gdem di global mapper versi 12 atau adalah data aster global dem versi 2 tewar september 29, 20 at 4. The gdem and astwbd are available for download from nasa earthdata. Salomemeca is distributed under gnu lgpl licence gnu general public licence, version 2. Compared to version 2, version 3 has a decrease in elevation void area due to the. Data manipulation, download, chrome list, and then pick the text file. Aster science team released version 3 of the global dem gdem based. A dem at 30 m spatial resolution was obtained from the aster global digital elevation model aster gdem version 2 dataset tachikawa et al. The aster gdem version 1 was released in july 2009 and the version 2, now under processing, will be released in the october 2011. Aster gdem global digital elevation model has been produced as a joint activity of the. Vertical accuracy assessment for srtm and aster digital. The ministry of economy, trade, and industry meti of japan and the united states national aeronautics and space administration nasa jointly announced the release of the advanced spaceborne thermal emission and reflection radiometer aster global digital elevation model version 3 gdem 003, and the aster water body dataset astwbd on.
In version 2, released in 2011, the gdem was improved, with reduction of. Aster advanced spaceborne thermal emission and reflection radiometer is a high resolution imaging instrument that is flying on the terra satellite. Jika ada saran, tanggapan, pertanyaan, link mati serta request silakan gunakan kotak komentar, halaman kontak atau sosial media yang ada di website lapak gis. As of 2 april 2016, the entire catalogue of aster image data became publicly available online at no cost. The aster gdem is available at no charge to users worldwide via electronic download from japan space systems and from nasas. Validation of the aster global digital elevation model. National aeronautics and space administration nasa, jointly released version 1 of the global digital elevation model gdem of the earths land surface, derived from 1. The elevation information is not obtained through radar interferometry but by analysis of stereo image pairs the principle is described in more detail in the technical documentation linked above. Kelebihan data elevasi dari aster gdem dari srtm adalah resolusi horizontalnya. Aster global digital elevation model version 2 summary of validation results.
Pernah download data di earthexplorer, wist atau demex. The aster gdem version 3 maintains the geotiff format and the same gridding and tile structure as in previous versions, with 30meter spatial resolution and 1x1 tiles. This raster product identifies all water bodies as either ocean, river, or lake. Pdf the characteristics of aster gdem version 2 researchgate.
Pada posting ini kita akan mencoba download citra aster gdem versi 2 dari reverbecho usgs. Pdf assessing the accuracy of srtm dem and aster gdem. The first aster gdem was released in 2009, with version 2 being. Stereo correlation was used to produce over one million individual scene based aster dems, to which cloud masking was applied. Validation study of the gdem version 2 confirmed that elevation offset and horizontal resolution will be greatly improved in gdem version 2 and the enhanced. Pdf aster global digital elevation model version 2 summary. Aster global digital elevation model v003 metadata updated. Sekarang ini aster gdem sudah memiliki versi 2 yang diklaim memiliki banyak kelebihan dibandingkan dengan versi 1 dalam hal akurasi tentunya. The aster global digital elevation model version 3 gdem v3 was evaluated over the conterminous united states in a manner similar to the validation conducted for the original gdem version 1 v1 in 2009 and gdem version 2 v2 in 2011. Creating contours using aster dem and global mapper. Anda bisa download aster global dem versi 2 melalui earth remote sensing data analysis center ersdac jepang dan dari lp. On june 29, 2009, nasa and the ministry of economy, trade and industry meti of japan released a global digital elevation model gdem to users worldwide at no charge as a contribution to the global earth observing system of systems geoss. The aster gdem is a joint contribution by nasa and the ministry of economy, trade and industry of japan meti to the global earth observation system of systems geoss. The aster gdem version 3 data product was created from the automated processing of the entire aster level 1a archive of scenes acquired between march 1, 2000, and november 30, 20.
Aster gdem global elevation data center for earth observation. Aster swir data acquired from late april 2008 to the present exhibit saturation of values and anomalous striping. As such, both meti and nasa desire to understand the uses of the aster gdem, expressed as one the geoss applications themes. More info including download links can be found here. Aster gdem global digital elevation model has been produced as a joint activity of the ministry of economy, trade, and industry meti of japan and the united states national aeronautics and space administration nasa. It took approximately one year to complete production of the beta version of the aster gdem using a fully automated approach. Peralatan peralatan yang digunakan dalam penelitian ini perangkat lunak pengolah citra, aplikasi pengolah angka, perangkat lunak gis untuk pembuatan dem peta rbi dan proses overlaydem. Kini aster global dem versi 2 telah tersedia untuk di download secara gratis. Pembahasan detil tentang kelebihankekurangan antara srtm dan aster gdem akan dibahas di masa yang akan datang. The gdem version 2 is reproduced using the updated algorithm. In this video, i have clearly shown the steps required to download aster gdem v3 from earthdata. Introduction the advanced spaceborne thermal emission and reflection radiometer aster global digital elevation model gdem was developed jointly by the ministry of economy, trade, and industry meti of japan and the united states national aeronautics and space administration nasa. Instrumen gdem aster diluncurkan dengan pesawat ruang angkasa nasa terra pada bulan desember 1999 yang memiliki kemampuan alongtrack stereoskopik menggunakan band spektral inframerah dekat untuk memperoleh data stereo. Gdem aster merupakan singkatan dari global dem aster spaceborne thermal emission and reflection radiometer yang artinya data dem seluruh dunia ada disitu.
This will list the aster gdem tiles that intersect your area of interest rectangle. Since it is in spanish, im reproducing it in english. Unduh dem indonesia versi big demnas resolusi 8 meter. This version 1 aster gdem gdem1 was compiled from over 1.
Aster gdem global digital elevation model v002 select search for granules now begins the tedious part where there are over 22,000 aster gdem tiles that cover the globe however, the website only list 400 per page where there is an add all on page button but no add all option i. The aster gdem covers land surfaces between 83n and 83s and is composed of 22,600 1by1 tiles. The aster global digital elevation model version 2 gdem v2 was evaluated over the conterminous united states in a manner similar to the validation conducted for the original gdem version 1 v1 in 2009. Di sebelah kanan atas anda tinggal mengklik menu download.
The aster global digital elevation model version 2 gdem v2 is also a free dem that covers land surfaces between 83 deg. How to download free aster global dem version 3 2020. Also, aster gdem distribution site will be suspended due to this update. Untuk bisa mengunduhnya anda sudah harus terdaftar, jika belum klik menu register. How to download free dem digital elevation model aster.
The aster gdem version 2 validation summary provides additional information on product quality. Using glovis to locate and download aster data sets. The data can be downloaded from the usgs earthexplorer website. The data is projected in a geographic latlong projection, with the wgs84 horizontal datum and the egm96 vertical datum. The aster gdem was created with two nir cameras on the aster satellite. Distribution of aster gdem in the current version will be terminated at 12. Create a suitably named directory for the terrain data on your hard disk. Mungkin kasusnya sama seperti pada walnya srtm dirilis yang pun demikian memiliki banyak anomaly data. We fixed the first images acquired after the april 16 earthquake as the master and made. Aster global dem version 3, and new aster water body. The first version of the aster gdem, released in june 2009, was generated using. Release of aster gdem version 3 06 august, 2019 the united states national aeronautics and space administration nasa and the ministry of economy, trade, and industry meti of japan today jointly released version 3 of the advanced spaceborne thermal emission and reflection radiometer aster global digital elevation model gdem the aster gdem is available at no charge to users worldwide.
Version 3 of the aster global digital elevation model. The aster gdem data set i am going to discuss here is quite similar in scope and potential applications with the following major differences. How to download aster global dem version 3 from earthdata. Berikut adalah beberapa cara yang bisa digunakan untuk download data aster gdem atau srtm. Aster pro2 is a desktop software developed by aster software. November 5, 2019 the aster global digital elevation model gdem version 3 astgtm provides a global digital elevation model dem of land areas on earth at a spatial resolution of 1 arc second approximately 30 meter horizontal posting at the equator. Announcement about the release of version 3 of the aster gdem at nasas lp. This study assessed the performance of recently released 3 arc second srtm dem version 4.
However i am having an issue with the bit depth of the provided data. This page lists the detail of the licences of the various products distributed. Lp daac nasa and meti release aster global dem version 3. Nasa and meti release aster global dem version 3 lp daac. Aster will obtain detailed maps of land surface temperature, emissivity, reflectance and elevation of the earth. If you just want a few of the available results, click on each tile you would like to download in the results pane then the download single granule data button. Version 2 of aster gdem came out in the summer of 2011, and. Meti jepang dan nasa bersamasama mengumumkan rilis termal spaceborne emisi termal dan radiasi refleksi aster global digital elevation model versi 3 gdem 3 pada 5 agustus 2019.
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