Checks images transferred over the network.
Checks AVHRR images that have been transferred over the network from the specified receiving station to ensure the images are the correct size.
- INDIR(/SGS4/KM1/XFER/BAA)
- Input directory. Directory where the images to be checked are located.
- NIMAGES
- Number of images. The number of images checked is returned in the specified TAE INTEGER variable.
- INDIR(/SGS4/KM1/XFER/LSU)
- Input directory. Directory where the images to be checked are located.
- NIMAGES
- Number of images. The number of images checked is returned in the specified TAE INTEGER variable.
- INDIR(/SGS4/KM1/XFER/UTOKYO)
- Input directory. Directory where the images to be checked are located.
- NIMAGES
- Number of images. The number of images checked is returned in the specified TAE INTEGER variable.
- INDIR(/SGS4/KM1/XFER/UMX)
- Input directory. Directory where the images to be checked are located.
- NIMAGES
- Number of images. The number of images checked is returned in the specified TAE INTEGER variable.
- INDIR(/SGS4/KM1/XFER/NSIDC)
- Input directory. Directory where the images to be checked are located.
- NIMAGES
- Number of images. The number of images checked is returned in the specified TAE INTEGER variable.
- INDIR(/SGS4/KM1/XFER/OPF)
- Input directory. Directory where the images to be checked are located.
- NIMAGES
- Number of images. The number of images checked is returned in the specified TAE INTEGER variable.
- INDIR(/AVHRR/ADAPS/XFER/PAS)
- Input directory. Directory where the images to be checked are located.
- NIMAGES
- Number of images. The number of images checked is returned in the specified TAE INTEGER variable.
CKTRANS will search INDIR for images matching the BAA naming scheme (see User Note 1) and check them for the Miami image format (see User Note 7). Images in the Miami format are moved into the ADAPSACQ directory and others are moved to ADAPSERR and must be retransferred. The number of images that are checked is returned in the TAE INTEGER variable NUMB.
CKTRANS will search INDIR for images matching the LSU naming scheme (see User Note 2). All images matching the naming scheme will have a check sum computed and compared to the value in its associated check sum file (same root file name with a ".sum" extension). If the values are equal, the image is moved into the ADAPSACQ directory; otherwise, the image is moved to ADAPSERR and must be retransferred. The number of images that are checked is returned in the TAE INTEGER variable NUMB.
CKTRANS will search INDIR for images matching the TK2 naming scheme (see User Note 3). All images matching the naming scheme are checked to confirm that they were transferred completely (they are the same size as they were in Tokyo -> the size is in a corresponding file with the .done extension), If the files were transferred correctly they are moved to the ADAPSACQ directory; otherwise they are moved to ADAPSERR and must be retransferred. The number of images that are checked is returned in the TAE INTEGER variable NUMB.
CKTRANS will search INDIR for images matching the NSIDC naming scheme (see User Note 4). All images matching the naming scheme are checked to confirm that they are in the required AVHRR archive format. Images in the AVHRR archive format are moved into the ADAPSING directory, and others are moved to ADAPSERR and must be retransferred. The number of images that are checked is returned in the TAE INTEGER variable NUMB.
CKTRANS will search INDIR for images matching the UMX naming scheme (see User Note 5). All images matching the naming scheme are checked to confirm that they were transferred completely (they are the same size as they were in Mexico -> the size is in a corresponding file with the .done extension), If the files were transferred correctly they are moved to the ADAPSACQ directory; otherwise they are moved to ADAPSERR and must be retransferred. The number of images that are checked is returned in the TAE INTEGER variable NUMB.
CKTRANS will search INDIR for images matching the OPF naming scheme (see User Note 12). All images matching the naming scheme are checked to confirm that they were transferred completely i.e. we have received a file with extension .done and that they are the same size indicated in the .done file. If the files were transferred correctly they are moved to the ADAPSACQ directory; otherwise they are moved to ADAPSERR and must be retransferred. The number of images that are checked is returned in the TAE INTEGER variable NUMB.
CKTRANS has a subcommand for each receiving station that transfers images over the network to the EROS Data Center. Depending upon the receiving station, CKTRANS will verify the images have been successfully transferred. To determine if an image was successfully transferred, a check sum is computed for the image on the current system and is compared to the check sum value computed on the system it was transferred from. If the values are equal, the image was transferred successfully (see User Note 6).
Images that have been successfully transferred are moved into the ADAPSACQ or ADAPSING directory for processing (see User Notes 7 and 8). All other images are moved to ADAPSERR. The log file "CKTRANS;LOG" in the ADAPSLOG directory should be checked for any error messages.
CEOS ID <xxx> is not one of the IDs expected from NSIDC. If the ID is a valid ID contact the system administrator.
There is not enough room in the ADAPSACQ directory to move images into it for processing. Run CKTRANS again when there are at least <xxxxx> bytes available in this directory.
The transferred image <xxxxx> could not be renamed to <yyyyy> because an image by this name already exists. This image should be manually renamed to an appropriate name. See User Note 6.
An error was encountered while reading the header file for the specified image. Verify the header file for this image is a valid AVHRR archive header.
The Miami header for the specified image does not contain the required values. Consult the system administrator to examine these fields. This image may have to be retransferred.
The specified image could not be moved to ADAPSACQ. Verify the file and directory permissions are set appropriately and there is enough disk space available.
The number of bytes contained in the image <yyyyy> is not a multiple of <xxxxx>. This image should be retransferred from NSIDC.
No check sum file exists for image <xxxxx>. LSU must retransfer the check sum file for this image.
The size of transferred file is not the same as it was before it was transferred. The image must be retransmitted.
The check sums for image <xxxxx> are not equal. This image must be retransferred from LSU.
The year could not be extracted from the image name. The year will be set to the current year.
The size of transferred file is not the same as it was before it was transferred. The image must be retransmitted.
The user aborted the specified function.
The command <yyyyy> was called with an inappropriate number of arguments. Consult the system administrator.
CKTRANS was unable to access INDIR. Check the permissions on this directory and rerun.
The specified environment variables must be set. Set these variables to the appropriate values and run CKTRANS again.
A fatal error was encountered. The message displayed immediately preceding this message is the error encountered.
CKTRANS could not find the path for the specified command. Ensure the path for this command is in one of the TAE global variables $USERLIB, $APLIB, or $SYSLIB and that all of the environment variables referenced in these paths are set appropriately.
Nimbus/Tiros Archive Disk Format, University of Miami, RSMAS/MPO, James W. Brown, 14-Apr-1992.
Images that are in the EROS Data Center's AVHRR archive format are moved directly into the ADAPSING directory for processing.
The naming scheme for images transferred from the Germany receiving station is <XXNSSYYMMDDHHmm.hrpt.Z or .gz> where XX is the station -- OP for Oberpfaffenhofen Germany or TF for O'Higgins Antarctica; SS is the satellite that acquired the image; YYMMDDHHmm are the year, month, day, hour and minute of acquisition; and an extension of .Z for Unix compression or .gz for gzip compression.
The naming scheme for images transferred from Prince Albert Canada receiving station is <noaa_SS_YYYYMMDD_HHmm_OOOOO.zip> where SS is the satellite that acquiredthe image; YYYYMMDD is the year month and day; HHmm is hour and minute at start of acquisition; and OOOOO is the orbit number. The image is compressed and, when unzipped, contains several files including: thumbnail images with .jpg extension; a header with .led extension; a trailer with .trl extension; misc. files with .nul and .vol extensions; and the image data file with .img extension. The header and image are concatenated together to form the PAS image file expected by INGEST.