BOREAS Level-1B TIMS Imagery: At Sensor Radiance in BSQ Format

7.3 Data Characteristics

7.3.1 Parameter/Variable

The descriptions of the parameters contained in the inventory listing file are:

Column Name                                                            
------------------------------                                                  
SPATIAL_COVERAGE                                                                
DATE_OBS                                                                        
START_TIME                                                                      
END_TIME                                                                        
PLATFORM                                                                        
INSTRUMENT                                                                      
NUM_BANDS                                                                       
PLATFORM_ALTITUDE                                                               
MIN_SOLAR_ZEN_ANG                                                               
MAX_SOLAR_ZEN_ANG                                                               
MIN_SOLAR_AZ_ANG                                                                
MAX_SOLAR_AZ_ANG                                                                
C130_MISSION_ID                                                                 
C130_LINE_NUM                                                                   
C130_RUN_NUM                                                                    
C130_SITE                                                                       
BAND_QUALITY                                                                    
CLOUD_COVER                                                                     
TIMS_MEAN_FRAME_STATUS                                                          
NW_LATITUDE                                                                     
NW_LONGITUDE                                                                    
NE_LATITUDE                                                                     
NE_LONGITUDE                                                                    
SW_LATITUDE                                                                     
SW_LONGITUDE                                                                    
SE_LATITUDE                                                                     
SE_LONGITUDE                                                                    
CRTFCN_CODE                                                                     


7.3.2 Variable Description/Definition

The descriptions of the parameters contained in the inventory listing file are:

Column Name                             Description                    
------------------------------ ------------------------------------------------ 
SPATIAL_COVERAGE               The general term used to denote the spatial area 
                               over which the data were collected.             
DATE_OBS                       The date on which the data were collected.       
START_TIME                     The starting Greenwich Mean Time (GMT) for the 
                               data collected.                                   
END_TIME                       The ending Greenwich Mean Time (GMT) for the
                               data collected.                                     
PLATFORM                       The object (e.g., satellite, aircraft, tower, 
                               person) that supported the instrument.             
INSTRUMENT                     The name of the device used to make the
                               measurements.                                            
NUM_BANDS                      The number of spectral bands in the data.        
PLATFORM_ALTITUDE              The nominal altitude of the data collection
                               platform above the target.                           
MIN_SOLAR_ZEN_ANG              The minimum angle from the surface normal
                               (straight up) to the sun during the data 
                               collection.   
MAX_SOLAR_ZEN_ANG              The maximum angle from the surface normal
                               (straight up) to the sun during the data 
                               collection.   
MIN_SOLAR_AZ_ANG               The minimum azimuthal direction of the sun
                               during data collection expressed in clockwise 
                               increments from North.                                  
MAX_SOLAR_AZ_ANG               The maximum azimuthal direction of the sun
                               during data collection expressed in clockwise 
                               increments from North.                                  
C130_MISSION_ID                The mission identifier assigned to the C130
                               mission in the form of YY-DDD-FF where YY is the 
                               last two digits of the fiscal year, DDD is the 
                               deployment number for "official" C130 missions and 
                               is day of year for non-"official" C130 missions
                               (i.e., no site coverage), and FF is the flight 
                               number within the given deployment (00 is given 
                               for non-"official" C130 missions).  An example 
                               would be 94-006-04.                                   
C130_LINE_NUM                  The number of the C130 line in its flights over  
                               the BOREAS area as given in the flight logs.   
                               Zero values are given for non-"official" C130
                               missions and for data between C130 sites or lines.   
C130_RUN_NUM                   The number of the C130 run in its flights over 
                               the BOREAS area as given in the flight logs.
                               Zero value is given for non-"official" C130 
                               missions and data between C130 sites, lines or 
                               runs.    
C130_SITE                      The C130 site designator as given in the flight  
                               logs. PRE is used for data taken from the
                               airport to the first "official" C130 site, BTW is 
                               used for data taken between two "official" C130 
                               sites, DSC is used for data taken after the last 
                               "official" C130 site, TRN is used for transect 
                               data, and YTH and YPA are used for data taken at 
                               the YTH and YPA airports (aircraft never 
                               left the ground).                                    
BAND_QUALITY                   The data analyst's assessment of the quality of  
                               the spectral bands in the data.                  
CLOUD_COVER                    The data analyst's assessment of the cloud cover 
                               that exists in the data.                        
TIMS_MEAN_FRAME_STATUS         The mean frame status calculated from the values  
                               on the digital tape of TIMS data collected during 
                               the flight.                                     
NW_LATITUDE                    The NAD83 based latitude coordinate of the north-
                               west corner of the minimum bounding rectangle
                               for the data.                                      
NW_LONGITUDE                   The NAD83 based longitude coordinate of the
                               northwest corner of the minimum bounding 
                               rectangle for the data.                                      
NE_LATITUDE                    The NAD83 based latitude coordinate of the north
                               east corner of the minimum bounding rectangle for
                               the data.                                      
NE_LONGITUDE                   The NAD83 based longitude coordinate of the 
                               north east corner of the minimum bounding 
                               rectangle for the data.                                     
SW_LATITUDE                    The NAD83 based latitude coordinate of the south 
                               west corner of the minimum bounding rectangle for 
                               the data.                                      
SW_LONGITUDE                   The NAD83 based longitude coordinate of the 
                               southwest corner of the minimum bounding 
                               rectangle for  the data.                                     
SE_LATITUDE                    The NAD83 based latitude coordinate of the south 
                               east corner of the minimum bounding rectangle for 
                               the data.                                      
SE_LONGITUDE                   The NAD83 based longitude coordinate of the 
                               southeast corner of the minimum bounding 
                               rectangle for the data.                                     
CRTFCN_CODE                    The BOREAS certification level of the data.
                               Examples are CPI (Checked by PI), CGR (Certified 
                               by Group), PRE (Preliminary), and CPI-??? (CPI 
                               but questionable).                                  

7.3.3 Unit of Measurement

The measurement units for the parameters contained in the inventory listing file 
are:

Column Name                                Units                       
------------------------------ ------------------------------------------------ 
SPATIAL_COVERAGE               [none]                                           
DATE_OBS                       [DD-MON-YYYY]                                      
START_TIME                     [HHMM GMT]                                       
END_TIME                       [HHMM GMT]                                       
PLATFORM                       [none]                                           
INSTRUMENT                     [none]                                           
NUM_BANDS                      [counts]                                         
PLATFORM_ALTITUDE              [meters]                                         
MIN_SOLAR_ZEN_ANG              [degrees]                                        
MAX_SOLAR_ZEN_ANG              [degrees]                                        
MIN_SOLAR_AZ_ANG               [degrees]                                        
MAX_SOLAR_AZ_ANG               [degrees]                                        
C130_MISSION_ID                [none]                                           
C130_LINE_NUM                  [none]                                           
C130_RUN_NUM                   [none]                                           
C130_SITE                      [none]                                           
BAND_QUALITY                   [none]                                           
CLOUD_COVER                    [none]                                           
TIMS_MEAN_FRAME_STATUS         [none]                                           
NW_LATITUDE                    [degrees]                                        
NW_LONGITUDE                   [degrees]                                        
NE_LATITUDE                    [degrees]                                        
NE_LONGITUDE                   [degrees]                                        
SW_LATITUDE                    [degrees]                                        
SW_LONGITUDE                   [degrees]                                        
SE_LATITUDE                    [degrees]                                        
SE_LONGITUDE                   [degrees]                                        
CRTFCN_CODE                    [none]                                           

7.3.4 Data Source

The source of the parameter values contained in the inventory listing file are:

Column Name                    Data Source                    
------------------------------ ------------------------------------------------ 
SPATIAL_COVERAGE               [Determined from latitude and longitude 
                               information provided in the NASA Ames flight 
                               summary reports]               
DATE_OBS                       [Software derived from TIMS housekeeping data]
START_TIME                     [Software derived from TIMS housekeeping data]
END_TIME                       [Software derived from TIMS housekeeping data]
PLATFORM                       [Data base constant]
INSTRUMENT                     [Data base constant]
NUM_BANDS                      [Data base constant]
PLATFORM_ALTITUDE              [Determined from latitude and longitude 
                               information provided in the NASA Ames flight 
                               summary reports]
MIN_SOLAR_ZEN_ANG              [Calculated with software from latitude and 
                               longitude and time information]
MAX_SOLAR_ZEN_ANG              [Calculated with software from latitude and 
                               longitude and time information]
MIN_SOLAR_AZ_ANG               [Calculated with software from latitude and 
                               longitude and time information]
MAX_SOLAR_AZ_ANG               [Calculated with software from latitude and 
                               longitude and time information]
C130_MISSION_ID                [Taken from the delivered tape label and the NASA 
                               Ames Flight Summary Reports]
C130_LINE_NUM                  [Taken from the delivered tape label and the NASA 
                               Ames Flight Summary Reports]
C130_RUN_NUM                   [Taken from the delivered tape label and the NASA 
                               Ames Flight Summary Reports]
C130_SITE                      [Taken from the delivered tape label and the NASA 
                               Ames Flight Summary Reports]
BAND_QUALITY                   [Constant software parameter value]
CLOUD_COVER                    [Constant software parameter value]
NS001_MEAN_FRAME_STATUS        [Software derived from TIMS housekeeping data]
NW_LATITUDE                    [Calculated with software from the C130 altitude 
                               and heading, starting and ending flight line 
                               latitude and longitude, and the static NS001 scan 
                               angle information]                                
NW_LONGITUDE                   [Calculated with software from the C130 altitude 
                               and heading, starting and ending flight line 
                               latitude and longitude, and the static TIMS scan 
                               angle information]
NE_LATITUDE                    [Calculated with software from the C130 altitude 
                               and heading, starting and ending flight line 
                               latitude and longitude, and the static TIMS scan 
                               angle information]
NE_LONGITUDE                   [Calculated with software from the C130 altitude 
                               and heading, starting and ending flight line 
                               latitude and longitude, and the static TIMS scan 
                               angle information]
SW_LATITUDE                    [Calculated with software from the C130 altitude 
                               and heading, starting and ending flight line 
                               latitude and longitude, and the static TIMS scan 
                               angle information]
SW_LONGITUDE                   [Calculated with software from the C130 altitude 
                               and heading, starting and ending flight line 
                               latitude and longitude, and the static TIMS scan 
                               angle information]
SE_LATITUDE                    [Calculated with software from the C130 altitude 
                               and heading, starting and ending flight line 
                               latitude and longitude, and the static TIMS scan 
                               angle information]
SE_LONGITUDE                   [Calculated with software from the C130 altitude 
                               and heading, starting and ending flight line 
                               latitude and longitude, and the static TIMS scan 
                               angle information]
CRTFCN_CODE                    [Constant data base value]                                

7.3.5 Data Range

The following table gives information about the parameter values found in the 
inventory table.


                     Minimum        Maximum        Missng  Unrel  Below   Data
                     Data           Data           Data    Data   Detect  Not
Column Name          Value          Value          Value   Value  Limit   Cllctd
--------------------------------------------------------------------------------
SPATIAL_COVERAGE     N/A            N/A            None    None   None    None
DATE_OBS             16-APR-1994    17-SEP-1994    None    None   None    None
START_TIME           2              959            None    None   None    None
END_TIME             5              959            None    None   None    None
PLATFORM             C130           C130           None    None   None    None
INSTRUMENT           N/A            N/A            None    None   None    None
NUM_BANDS            6              6              None    None   None    None
PLATFORM_ALTITUDE    4640           7716.3         None    None   None    None
MIN_SOLAR_ZEN_ANG    73.8           123.4          None    None   None    None
MAX_SOLAR_ZEN_ANG    74             123.6          None    None   None    None
MIN_SOLAR_AZ_ANG     .3             359.4          None    None   None    None
MAX_SOLAR_AZ_ANG     .7             360.0          None    None   None    None
C130_MISSION_ID      94-004-09      94-009-09      None    None   None    None
C130_LINE_NUM        1              703            None    None   None    None
C130_RUN_NUM         1              3              None    None   None    None
C130_SITE            429            433            None    None   None    None
BAND_QUALITY         N/A            N/A            None    None   None    None
CLOUD_COVER          N/A            N/A            None    None   None    None
TIMS_MEAN_FRAME_                                   None    None   None    Blank
STATUS               0              20
NW_LATITUDE          53.32705       56.17763       None    None   None    None
NW_LONGITUDE         -106.54837     -97.96291      None    None   None    None
NE_LATITUDE          53.31391       56.12803       None    None   None    None
NE_LONGITUDE         -106.09913     -97.77578      None    None   None    None
SW_LATITUDE          53.0647        55.89295       None    None   None    None
SW_LONGITUDE         -106.63445     -98.02344      None    None   None    None
SE_LATITUDE          53.05164       55.84932       None    None   None    None
SE_LONGITUDE         -106.13012     -97.83714      None    None   None    None
CRTFCN_CODE          PRE            PRE            None    None   None    None
--------------------------------------------------------------------------------
Minimum Data Value -- The minimum value found in the column.
Maximum Data Value -- The maximum value found in the column.
Missng Data Value  -- The value that indicates missing data. This is used to 
                      indicate that an attempt was made to determine the 
                      parameter value, but the attempt was unsuccessful.
Unrel Data Value   -- The value that indicates unreliable data.  This is used 
                      to indicate an attempt was made to determine the 
                      parameter value, but the value was deemed to be 
                      unreliable by the analysis personnel.
Below Detect Limit -- The value that indicates parameter values below the 
                      instruments detection limits.  This is used to 
                      indicate that an attempt was made to determine the 
                      parameter value, but the analysis personnel determined
                      that the parameter value was below the detection
                      limit of the instrumentation.
Data Not Cllctd    -- This value indicates that no attempt was made to 
                      determine the parameter value.  This usually 
                      indicates that BORIS combined several similar but 
                      not identical data sets into the same data base table
                      but this particular science team did not 
                      measure that parameter.

Blank -- Indicates that blank spaces are used to denote that type of value.
N/A   -- Indicates that the value is not applicable to the respective column.
None  -- Indicates that no values of that sort were found in the column.
--------------------------------------------------------------------------------

7.4 Sample Data Record

SPATIAL_COVERAGE,DATE_OBS,START_TIME,END_TIME,PLATFORM,INSTRUMENT,NUM_BANDS,
PLATFORM_ALTITUDE,MIN_SOLAR_ZEN_ANG,MAX_SOLAR_ZEN_ANG,MIN_SOLAR_AZ_ANG,
MAX_SOLAR_AZ_ANG,C130_MISSION_ID,C130_LINE_NUM,C130_RUN_NUM,C130_SITE,
BAND_QUALITY,CLOUD_COVER,TIMS_MEAN_FRAME_STATUS,NW_LATITUDE,NW_LONGITUDE,
NE_LATITUDE,NE_LONGITUDE,SW_LATITUDE,SW_LONGITUDE,SE_LATITUDE,SE_LONGITUDE,
CRTFCN_CODE
'SSA',16-APR-1994,606,610,'C130','TIMS',6,4753.1,115.2,115.4,343.9,344.4,
'94-004-09',301,1,'429','NOT ASSESSED','NOT ASSESSED',0,53.71754,
-106.37024,53.6996,-105.93603,53.52663,-106.39161,53.50878,-105.95939,'PRE'
'SSA',16-APR-1994,615,618,'C130','TIMS',6,4771.0,115.5,115.7,346.2,346.8,
'94-004-09',303,1,'429','NOT ASSESSED','NOT ASSESSED',0,53.65307,
-106.48068,53.6305,-105.92932,53.62535,-106.48372,53.60279,-105.93272,'PRE'
