XSAT Ground Segment at CRISP
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1 XSAT Ground Segment at CRISP LIEW Soo Chin Head of Research, CRISP 5 th JPTM for Sentinel Asia Step-2, Nov 2012, Daejeon, Korea
2 Centre for Remote Imaging, Sensing and Processing (CRISP) A university level research centre of the National University of Singapore Established in Late 1992 with funding from the Agency for Science, Technology and Research (A*STAR) Started operation in September 1995 with the completion of the satellite receiving ground station. CRISP s Mission: to develop an advanced capability in remote sensing to meet the scientific, operational and business requirements of Singapore and the region.
3 13m Antenna (Installed in 1995)
4 6 metre X band Antenna Oct 2000
5 8.5 m X-band antenna Feb 2009 New addition: 8.5 m X-band antenna Feb 2009
6 Satellite data received at CRISP High Resolution Optical Data SPOT 2, 4, 5 IKONOS GeoEye-1 WorldView-1, 2 X-Sat Meteorological / Environmental Satellite Data Suomi NPP Terra and Aqua / MODIS NOAA / AVHRR Geostationary Satellite Data MTSAT FY2 SAR Satellite Data ERS 1, 2 RADARSAT
7 CRISP Ground Station Coverage
8 Data Processing Facilities
9 CRISP s Core Activities Ground Station Operation Research & Development Market Development
10 Research at CRISP Terrestrial remote sensing Forest fires detection and characterization Forest biomass quantification Vegetation mapping Land use / Land cover change Radar interferometry detection of land movement, subsidence (e.g. during volcanic eruptions, earthquakes)
11 Regional fire monitoring operation Programming SPOT Passes Fire detected by SPOT on 9 June 2003 MODIS detected hotspots on 8 June 2003
12 CRISP Web GIS for MODIS Hotspots Hotspots data are also provided to Sentinel Asia Wildfire Working Group web portal
13 2010 land cover map (250m resolution) 500m resolution MODIS mosaic 500m resolution land cover map [9]
14 CRISP Land Cover Maps are available at JAXA SAFE Portal
15 High resolution land cover change
16 Radar Interferogram of Haiti Earthquake Strong displacement Léogane Grand-Goâve Petit-Goâve Interferogram produced from ALOS PALSAR Data Processed by CRISP, National University of Singapore This interferogram of Haiti was obtained by processing PALSAR radar images acquired by the ALOS satellite. It shows the area hit by the 12 January 2010 earthquake. Each colour cycle denotes a 11.8 cm motion in the direction of the satellite s line of sight. Close fringes denote strong displacement.
17 Research at CRISP Coastal and Inland Water remote sensing Optical properties of inland and coastal sea waters Characterization of suspended sediment particles Sediment transport Detection and characterization of phytoplankton Inland and coastal water quality in Singapore and SE Asia waters Shallow water bathymetry Mapping coastal habitats (Mangroves, sea grass, corals, etc.)
18 WorldView-2 Image Mapping coastal environment Physics-based models used to derive water depth and sea bottom albedo from a satellite image. Water depth Sea bottom vegetation index
19 Research at CRISP: Atmospheric remote sensing Radiative transfer in atmosphere Atmospheric correction of satellite data Characterization of aerosol particles Air quality in Singapore and SE Asia Aerosol transport Clouds properties
20 AERONET Station at NUS Ground-based monitoring of aerosols A worldwide network of standardised and calibrated sunphotometers established and coordinated by NASA (USA) and LOA (France). The program provides a long-term, continuous and readily accessible public domain database of aerosol optical, mircrophysical and radiative properties for aerosol research and characterization, validation of satellite retrievals, and synergism with other databases.
21 Micro-pulse Lidar for aerosol and cloud characterization In co-operation with NASA and NRL
22 Aerosol characterization from AERONET data AOD and Angstrom exponent yearly variability
23 Mean Aerosol Optical Thickness, MODIS: 1998 to 2007 Mean_tm_aot
24 XSAT XSAT (experimental SATellite) Singapore s first earth observation satellite. Launched 20 April 2011, with two other satellites by India's Polar Satellite Launch Vehicle (PSLV-C16). Sun-synchronous near-polar low earth orbit Xsat is a developmental project undertaken by CREST (Centre For Research in Satellite Technologies) with participation from various schools in NTU, as well as partners such as CRISP (Centre for Remote Imaging, Sensing and Processing, NUS), and overseas collaborators (SaTReCi, ISRO and DLR).
25 XSAT Space segment 105 kg micro-satellite Low earth orbit (817 km) Polar, sunsynchronous Payload multispectral 10m GSD optical camera (Red, Green, NIR) Swath 50km Launched on 20 th April 2011 on ISRO s PSLV C-16 Developed by Centre for Research in Satellite Technology (CREST)/ Satellite Research Centre (SaRC) at Nanyang Technological University (NTU), Singapore Ground segment S-band TT&C, X-band data downlink Data reception and processing system developed by CRISP at National University of Singapore (NUS) TT&C at NTU (CRISP as backup) Data downlink at CRISP
26 XSAT
27 XSAT S band Up/down link X band down link (50 Mbps) 6m S-band Antenna and CREST/NTU Image request 8.5m X band Antenna and CRISP/NUS (Also Backup MCS)
28 XSat Imaging Payload IRIS Pushbroom sensor array 3 spectral bands: Green ( nm) Red ( nm) NIR ( nm) Ground pixel width: 10 m Swath width: ~ 50 km Telescope aperture: 12.0 cm F-number: 4 XSat images are received and processed by CRISP s ground station
29 Green Red NIR Colour
30 Green Red NIR Colour
31 Geometically Rectified XSAT Image of Singapore 11 May 2011
32 CRISP XSAT Catalogue Browse
33 XSAT Image Bangkok, Thailand CRISP - XSAT Catalogue Browse Image ID : XSAT Date/Time : _03:59:41 Sat Name : XSAT1 Shift by : 5 sec Latitude/Longitude Centre : 13 50'45" / '20" Top Left : 14 06'02" / '13" Top Right: 14 05'13" / '23" Bott Left : 13 35'59" / '20" Bott Right: 13 35'46" / '24" Look Elev : Look Az : Attitude (p,r,y) : (-0.89,9.88,-8.28) Remark : Thailand
34 CRISP - XSAT Catalogue Browse Image ID : XSAT XSAT Image Incheon, Korea Date/Time : _02:36:28 Sat Name : XSAT1 Latitude/Longitude Centre : 37 29'32" / '19" Top Left : 37 51'55" / '48" Top Right: 37 39'55" / '21" Bott Left : 37 19'28" / '37" Bott Right: 37 06'49" / '32 Cloud Cover: (0,0,0,0) Cloud Avg : 0 Look Elev : Look Az : Attitude (p,r,y) : (3.08,6.50,10.45) Remark : South_Korea_Incheon
35 XSAT Image Incheon,
36 XSAT Image, Sumatra 28 Aug 2011 XSAT images are used in addition to SPOT images for CRISP s regional fire monitoring operation
37 Sumatra Forest Fire 28 Aug 2011
38 XSAT ( ) SPOT ( )
39 CRISP - XSAT Catalogue Browse Image ID : XSAT Vegetation Fires Sarawak :10:17 XSAT
40
41 XSAT image of 2011 Thailand Flood Flood Waters Flood Waters 26 Oct 2011
42 XSAT Image, Bangkok Area Don Muang Airport Flood Waters Bangkok Suvarnabhumi Airport 26 Oct 2011
43 Don Muang Airport Flood Waters 26 Oct 2011
44 Comparison with pre-disaster satellite image Area: 24km by 36km SPOT ( ) XSAT ( )
45 Thank you
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