MODIS Direct Acquisition, Processing and Applications @ CRISP

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MODIS Direct Acquisition, Processing and
Applications _at_ CRISP
CRISPCentre for Remote Imaging, Sensing and
Processing
KWOH, Leong Keong Director, CRISP E-mail
lkkwoh_at_nus.edu.sg APEIS Capacity Building
Workshop on Integrated Environmental Monitoring
of the Asia-Pacific Region 20-21 September 2002,
Beijing, China
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Overview

• Introduction
• Processing Levels
• Level-0 Processing
• Browsed Image Generation
• CRISPs MODIS Web Cataloging System
• Level-1 Processing
• NASA software Vs. IMAPP
• MODIS Georectification
• Recent Application
• Conclusion and Future Developments

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CRISPCentre for Remote Imaging, Sensing and
Processing

• Status of CRISP MODIS Data Reception
• First Reception of TERRA MODIS 3 March 2001
• First Reception of AQUA MODIS 15 July 2002
• Processing system currently used IMAPP v 1.4
  (beta)
• Computing Platform PC running LINUX

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6 metre X band Antenna
13 metre X band Antenna
TERRA / AQUA data received if either one of the
antenna is available. Either antenna can be used.
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The first MODIS captured by CRISP on 3/3/2001
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First MODIS image received and processed by CRISP
3 March 2001)
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Processing Levels

• Two main levels
• Level-0 Processing
• Frame Formatting Software developed by CRISP
• Catalogue Software
• RAW data archived on DLT
• Level-1 Processing
• NASA GSFC level 1 processing software
• International MODIS/AIRS Processing Package
  (IMAPP) by University of Wisconsin
• Higher level processing
• Georectification developed in CRISP

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Level 0 Processing
TERRA / AQUA
Downlinked Raw format
MODIS CCSDS Packets
FrameSync Reformat with RS correction
Recorded on Hard disk (Datron DIS)
GBAD Packets
(AQUA only)
Browse Image
Demodulator (Alcatel Omnisat)
X-Band Antenna
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Generate Browse Image

• A program is written to generate browse images
  directly from the MODIS PDS file.
• The program incorporate some simple geometry to
  flatten the image and remove bowtie effect.
• The browse images is then fed into on our web
  catalogue system.
• The acquisition, archival, browse image
  generation and catalogue updating are performed
  automatically.

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Image Captured on 4 July 2001(SWIR, NIR, RED)
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CRISPs MODIS Web Catalogue (crisp.nus.edu.sg)
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(No Transcript)
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TERRA Day Image
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Night Image
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AQUA Image
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Level 1 Processing

• Two versions of level-1 processing has been used
• International MODIS/AIRS Processing Package
  (IMAPP)
• NASA GSFC MODIS level 1 Processing Software

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Construction records
MOD01
MOD02
MOD03
NASA Software
PDS File
Level 1a
Level 1b
GBAD File
Geolocation
IMAPP
(AQUA Only)
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Georectification
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Georectification
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Georectification
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Terra MODIS image on 4 July 2001
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Forest Fire in Sumatra, 4 July 2001
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Forest Fire in Sumatra, 4 July 2001
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MODIS Hot Spots validated with SPOT
fires2001-05-23
MODIS Hot Spots 2.8387N 111.9912E 2.8373N
112.0008E 2.8295N 111.9899E 2.8281N 111.9995E
SPOT Fire Locations A 2.8328N 111.9922E B 2.8344N
111.9994E C 2.8308N 111.9997E
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MODIS Hot Spots validated with SPOT
fires2001-05-23
MODIS Hot Spots 2.5642N 111.9143E 2.5628N
111.9239E 2.5563N 111.9034E 2.5549N
111.9130E 2.5535N 111.9226E 2.5521N
111.9322E 2.5508N 111.9417E 2.5456N
111.9117E 2.5443N 111.9213E
SPOT Fires D 2.5633N 111.9192E E 2.5528N
111.9158E F 2.5533N 111.9211E G 2.5550N
111.9258E H 2.5531N 111.9303E
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Conclusion and Future Developments

• CRISP has implemented an end to end MODIS DB
  reception, archival and processing system.
• Automatic processing, from level 0 processing,
  catalogue updating to level 1 processing and
  further georectification are performed.
• We are currently developing numerous applications
  for MODIS such as Cloud Mask, 8-days Cloud Free
  Composite, Fires detection and Ocean
  applications.