>From: Anthony James Wimmers <address@hidden> >Organization: UVa >Keywords: 200305130226.h4D2QX7U001210 McIDAS GMS IMGCOPY STYPE=VISR Hi Tony, >Is there any known way to convert a GMS-5 (raw calibration) >to the VISR calibration? I was first going to suggest the STYPE=VISR option of IMGCOPY: C ? STYpe=VISR | reduces 2-byte data to 1-byte brightness data; not valid C ? with BAND=ALL or SIZE=ALL but the output from IMGLIST you include below shows that the data is already 1 byte. >I have a batch file that works fine >with GOES-10 and GOES-8 images, but has problems with the >GMS-5 imagery because of the calibration. What do you do in your BATCH file? >At the very least, I need a conversion chart for raw >calibration brightness values and brightness temperatures. >Can you tell me where to find that? The GMS calibration module kbxgms.dlm has this information. If your image is viable, then IMGPROBE can be used to list out values from the image in user-specified units. You come up with a raw to brightness correspondence by listing out values first in raw and then in brightness for the same box. What does an IMGPROBE of your image show for the valid units for the image? If brightness is not one of the values, then could you provide me with the image so I can take a look? >Thanks! > >Example: > >Image file directory listing for:LA > Pos Satellite/ Date Time Center Res (km) >Image_Size > sensor Lat Lon Lat Lon > --- ------------- ------------ -------- ---- ---- ----- ----- >------------ >8101 GMS-5 3 MAY 02123 12:32:00 35 -140 > Band: 4 6.8 um Water vapor detection 6.73 5.15 1048 x >2292 > proj: 0 created: 2002124 92023 memo: gms data in real time > type:GMS cal type:RAW > offsets: data= 9984 navigation= 256 calibration= 2816 auxillary= >0 > doc length: 0 cal length: 0 lev length: 0 PREFIX= 0 > valcod: 0 zcor: 1 avg-smp: N > start yyddd: 2002123 start time:123222 start scan: 0 > lcor: 733 ecor: -31 bytes per pixel: 1 ss: 83 > Resolution Factors (base=1): Line= 4.0 Element= 4.0 >IMGLIST: done Tom
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