Sistemas Satelitales de Percepción Remota

MODELOS DIGITALES DEL TERRENO MDT
MODELOS DIGITALES DE ELEVACIÓN MDE
MODELOS DIGITALES DE SUPERFICIE MDS
Sistemas Satelitales de Percepción Remota
Sistema Activos: RADAR - Mapeo Topográfico por Radar (SRTM)
12.Geoinformación en Internet
2012_SRTM_WebDatabase_CGIAR
Modelos 3D
Tendencias en la Percepción Remota
- Sensores hiperespectrales y muy alta resolución espacial.
- RADAR y LASER para la producción de Modelos Digitales del Terreno (relieve y
coberturas!).
- Equipos de menores costos para estudios locales integrando tecnologías diversas
(FAPEF-Video-GPS).
SRTM: datos para análisis
del terreno en SIG
Tendencias en la Percepción Remota
- RADAR para la producción de Modelos Digitales del Terreno (relieve y coberturas).
Quimilí
Barredores LASER (LIDAR)
- LASER para la producción de Modelos Digitales del Terreno (relieve y coberturas!).
LASER - LIDAR: Light Detection and
Ranging
CGIAR-CSI SRTM 90m DEM Digital Elevation Database
http://srtm.csi.cgiar.org/
CGIAR-CSI SRTM 90m DEM Digital Elevation Database - http://srtm.csi.cgiar.o
CGIAR-CSI SRTM 90m DEM Digital Elevation Database - http://srtm.csi.cgiar.o
CGIAR-CSI SRTM 90m DEM Digital Elevation Database - http://srtm.csi.cgiar.o
38 MB
CGIAR-CSI SRTM 90m DEM Digital Elevation Database
http://srtm.csi.cgiar.org/
Status Report on DA-09-03d*
(Global DEM datasets)
Lorant Czaran on behalf of
Jan-Peter Muller
[email protected]
Point-of-Contact, GEOSS Tasks DA-07-01 & DA-09-03d
Chairperson, CEOS-WGCV Sub-group on Terrain mapping from
satellites
Chair, ISPRS WG IV/6: Global DEM Interperability
Head, Imaging Group
Director, UK NASA RPIF
Professor of Image Understanding and Remote Sensing
HRSC Science Team Member (ESA Mars Express 2003)
Stereo Panoramic Camera Science Team Member (ESA EXOMARS)
MODIS & MISR Science Team Member (NASA EOS Project)
TerraSAR-X and TANDEM-X science team member (DLR-Astrium)
* Partially supported by BNSC under the ICP2 and ICP3 programmes
GEO Task DA-09-03d : Global DEM
•
•
Supported by BNSC-CEOS with Point of Contact: Prof. J-P Muller
(CEOS-WGCV) and WGISS activities led by W. Cudlip (Qinetiq)
Objectives are to
– Facilitate interoperability among Digital Elevation Model (DEM) data sets with
the goal of producing a global, coordinated and integrated 30m DEM of the
Earth’s land surface and continental shelves
• Envisaged ASTER GDEM to form the land part of this global 30m DEM
• Continental shelf bathymmetry still a major issue, need for GEO pressure
– This DEM database should be embedded into a consistent, high accuracy,
and long term stable geodetic reference frame for Earth observation.
•
Planned activities include:
– Successive open calls for validation of ASTER GDEM quality (12/08, 4/09,
6/10) and presentation of results through online proceedings of workshops,
subsequent peer review journals.
– Open display of ASTER GDEM quality through the CEOS-WGISS ICEDS
(3/10).
– Open display of errors and artifacts through “Known Product Issues” web
service (3/11).
– Promotion of continental shelf bathymetry acquisition starting in north polar
region through ESA/CSA MORSE programme (6/10).
•
40 members involved in Task (UK, US, AU, DE, FR, IT, ES, JP, CN, KR,
WMO, OGC)
Status-Overview : GEO DA-09-03d:
Global DEM*
• Validation of ASTER GDEM at 1 arc-second (≈30m) currently being
completed by NASA/USGS with METI/ERSDAC.
• USGS released an “Announcement of Collaborative Opportunity” on
2.12.08 with a closing date for proposals of 7.1.09. 21 non-US
groups submitted validation results by 21 March 2009
• JPM evaluated ASTER GDEM quality for 5 tiles (maximum
permitted), 4 of which were over CEOS-WGCV test sites
• Around 1% of the total 22,495 tiles have been evaluated by these 21
groups outside of the US and around 3% by NGA and USGS
• USGS hope to have joint validation report completed in the next few
months for possible release of the ASTER GDEM no earlier than
June 2009
• Current METI/NASA release policy states limits on the maximum
number of tiles permitted for each order although all data will be free
• Only 1º x 1º tiles to be released to registered users through ERSDAC
and USGS-EDC. Conditions on subsequent use not known at
present time
* thanks to Bryan Bailey for providing this in difficult circumstances
GDEM Stacking Number
0
Michael Abrams, JPL
10
5
15
Stacking Number
ISRSE, Stresa, Italy, May 2009
20
Susquehanna Test Site
10 – 22 Scenes
1 – 9 Scenes
Prototype ASTER GDEM
Michael Abrams, JPL
Number of Scenes Used to Produce
Prototype ASTER GDEM
ISRSE, Stresa, Italy, May 2009
ASTER intercomparison over CEOS-WGCV
North Wales site
Example of ASTER vs GPS vs SRTM vs BlueSky vs GLC2000