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This site is maintained under the NASA/SSC Hyperspectral EOCAP project to support precision agriculture activities in the California San Joaquin Valley, in particular to support the Ag 20/20 program conducted at Mr. Ted Sheely's farm. Data are for use by the project participants and access to cetain data on this site can be obtained through contact with OKSI.

Agriculture in the News

2003 Remote Sensing Data
Click on a specific plot to access the data available for that plot.
Data from plots with no link are available from OKSI upon special request.

Year 2003 Crop Map 30-1 31-4 31-3 32-3 6-1 5-2 6-3 5-3 4-2 7-2 8-1 8-2 Additional Fields:
USDA South 40
The Sheely Farm is near Lemoore,
San Joaquin Valley, California
USDA Shafter South 40
is near Shafter, California
•  Click here for 2001 Remote Sensing Data
•  Click here for 2002 Remote Sensing Data

Data will be posted to this site as they are collected during the growth season and include:
• Remote sensing sensors
For more information, click on the sensor name.
Sensor Bands & resolution GSD Platform / Altitude (typ.)
Bands @ FWHM
Green (550 nm ), 10 nm
Red (660 nm ), 10 nm
NIR (850 nm ), 40 nm
TIR (7 to 14 µm)
5,000 ft. - 0.6 meters in VNIR; 3.2 meters in TIR
9,500 ft. - 1.2 meters in VNIR; 6.2 meters in TIR
Cessna 206/210,
5,000 ft. (USDA)
9,5000 ft. (Sheely Farm)
OKSI Airborne Visible and Near InfraRed Sensor (AVNIR)
60 bands,
430 to 1,012 nm,
~10 nm increments,
~10 nm FWHM
5,000 ft. - 0.8 meters
9,500 ft. - 1.6 meters
Panchromatic: 0.45 - 0.90 µm,
Multispectral (@ FWHM):
Band 1 (B) = 450 - 520 nm
Band 2 (G) = 520 - 600 nm
Band 3 (R) = 632 - 698 nm
Band 4 (NIR) = 757 - 853 nm
1 meter in Pan,
4 meter in multispectral bands
Spaceborne, 680 km, polar orbit, 10:30 AM equatorial crossing

Remote sensing ground truth University of California Cooperative Extension - Kings County Ag20/20 Project.
Georeferencing and band-to-band registration Each plot is marked with 4 corners markers (4'×4' white squares)that have been GPS'd.
The markers are used for band registration & georeferencing of the airborne data.
Click here for a list of the markers position and a map
Reflectance calibration panels Click here for information about the Calibration panels
• Plant characterization data (TBD)
• Soil characterization data (TBD)

Data contents
Access to data by clicking on specific plots in the crop map shown below

Remote sensing data
  ENVI format gif format
  • 3 VNIR bands image cube with header file
  • Bands are coregistered and converted to reflectance
  • Georeferenced data
  • TIR band with header file
  • False color NDVI based on NIR and Red bands
  • Complete reflectance cube in 60 bands
  • 652 cross track pixels
  • Along track pixels depend on field size
  • ENVI header file
  • Georeferenced data
  • False color NDVI based on NIR and Red bands
  • NDVI (Normalized Difference Vegetation Index)based on NIR and Red bands.
  • NGI (Normalized Green Index) based on Green and Red bands.
  • RVSI (Red-Edge Vegetation Stress Index) based on NIR bands.
  • WI (Water Index) based on water absorption bands.
Ikonos data
  • Complete cube in 4 bands
  • ENVI Header file
  • Panchromatic band
  • Georeferenced data
  • False color NDVI based on NIR and Red bands
Ground data:
University of California Cooperative Extension - Kings County Ag20/20 Project.

ENVI Freelook is a free tool for viewing image cube files in ENVI format

For information about the California Ag.20/20 Project please contact:

Ag2020.org website
Opto-Knowledge Systems, Inc. (OKSI)
Torrance, CA 90503
Phone (310) 371-4445
FAX (310) 796-9300
Davis, CA
Phone (530) 752-0621
FAX (530) 752-5262
Professor Susan Ustin
Shafter, CA
Phone (661) 746-8009
FAX (661) 746-1619

Work is supported with in kind contributions by: Additional participants include: The test site for this project and data are available courtesy of Mr. Ted Sheely. His enthusiastic participation, directions and contributions are acknowledged