Project Documentation GFZ Department 1

09/25/2019

04:17 PM GAMMA Questions ALOS: RE: Question about Performing Radiometric Terrain Correction upon ALOS ScanSAR Level 1.5 Images

Hi Dr. Werner,
I am attaching the original IMG* and LED* file together with an ASCII format parameter file(ALPRS*L... Jack Chang

09/24/2019

09:45 PM GAMMA Questions ALOS: RE: Question about Performing Radiometric Terrain Correction upon ALOS ScanSAR Level 1.5 Images

Just quickly tried it. Got an error message as follow when running *gc_map*:
ERROR p_interp(): time outside of ran... Jack Chang

08:30 PM GAMMA Questions ALOS: Question about Performing Radiometric Terrain Correction upon ALOS ScanSAR Level 1.5 Images

Hi GAMMA folks,
I have used *par_EORC_PALSAR_geo* to convert ALOS Level-1.5 images into GAMMA-supported format. Ho... Jack Chang

02/12/2019

06:54 PM GAMMA Questions Sentinel-1: RE: Question of Coregistering Sentinel-1 multi-look images (MLIs)

Hi Charles,
Thank you so much for your suggestion. I have solved this problem successfully!
Jack Jack Chang

02/11/2019

05:00 PM GAMMA Questions Sentinel-1: Question of Coregistering Sentinel-1 multi-look images (MLIs)

Hi Dr. Charles,
I am trying to coregister multiple Sentinel-1 GRD MLIs to a reference MLI using MLI_resamp_lt_all.... Jack Chang

09/22/2018

05:47 AM GAMMA Questions Sentinel-1: Error Message in mk_geo_radcal mode-1 processing

Hi all~
I have processed some frames of GRD data with mk_geo_radcal, some work with
no problem, but some show er... Jack Chang

09/19/2018

04:40 PM GAMMA Questions Sentinel-1: RE: Question about mosaicing S1 GRD data after mk_geo_radcal processing

Hi Charles,
Thank you very much for your suggestion :)
I used mode 1 for multi_mosaic.
I also realized that ... Jack Chang

09/18/2018

04:51 PM GAMMA Questions Sentinel-1: Question about mosaicing S1 GRD data after mk_geo_radcal processing

Hi all,
I have been processing S1 GRD images these days. I plan to process several
S1 GRD images, perform backsca... Jack Chang

03:59 PM GAMMA Questions SAR Data Preprocessing: RE: Does GAMMA support GPU processing?

Hi Charles,
Thank you for replying :)
I was working on processing ALOS-2 ScanSAR L1.1 images to obtain interferog... Jack Chang

09/17/2018

05:29 PM GAMMA Questions SAR Data Preprocessing: Does GAMMA support GPU processing?

Hi all,
I would like to ask if GAMMA supports GPU processing since some of proecssings take really long time (hour... Jack Chang