Changes between Version 1 and Version 2 of Procedures/hyperspecprocessing


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Timestamp:
Feb 13, 2012 10:43:51 AM (7 years ago)
Author:
mark1
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  • Procedures/hyperspecprocessing

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    44
    55The ARSF collects hyperspectral data using two instruments, both of which are manufactured by Specim:
    6    * Eagle <sensorlink> for visible and near infra-red wavelengths (~400nm to 970nm)
    7    * Hawk <sensorlink> for short wave infra-red wavelengths (~1000nm to 2500nm)
     6   * [wiki:Sensors/Specim#Eagle Eagle] for visible and near infra-red wavelengths (~400nm to 970nm)
     7   * [wiki:Sensors/Specim#Hawk Hawk] for short wave infra-red wavelengths (~1000nm to 2500nm)
    88
    99The raw data format from these sensors is ENVI band interleaved by line (BIL) files, which is a simple binary data format. Each BIL file comes with an accompanying header file in a human readable text format. The header file contains information about the BIL file format and specifications of the sensor at time of data capture. The Eagle raw data files contain data 12-bit data (0-4095) stored as 16-bit integer, whilst the Hawk raw data are 14-bit (0-16383) stored as 16-bit integer. The first pixel of the first band of each raw file is the frame counter pixel, which is essentially a frame id tag that increments by 1 through out the file. At the end of the raw file, after data capture for this flight line, a number of lines of data are captured with the shutter closed. These lines are refered to as "dark lines" and give sensor ccd values for when no light is present.
     
    1414 * Aircraft position and navigation post processing <link>
    1515 * APL Hyperspectral chain <link>
    16  * Delivery creation <link>
     16 * Delivery creation
    1717 * Delivery checking <link>
    18  * Dispatch <link>
     18 * Dispatch Dispatch <link>
    1919
    2020After the data has been dispatched to the PI, the project directories will be tidied up and the data archived at the NERC Earth Observation Data Centre (NEODC) <link>. The data will then be available for use by other parties after an initial embargo period of 1 year after dispatch.
     
    102102
    103103-------------------------------------
    104 == Quality control and Delivery creation ==
     104== Quality control and Delivery creation == 
    105105
    106106