The COSMO-SkyMed (CSK) system is a constellation of X-band SAR satellites launched by the Italian Space Agency (ASI), and are operated jointly by the Italian military, ASI, and commercial operator e-GEOS. Four satellites (CSK-1 through CSK-4) were launched between 2007 and December 2010 in the same orbit. Repeat interval for each satellite is 16 days, but the spacings between the four satellites provide intervals from 1 day to 8 days.
Processing COSMO-SkyMed data
ROI_pac can be used to process COSMO-SkyMed data, either from raw or ASI-processed SLC images for stripmap mode data and only from SLC images for Spotlight mode data. The data products are supplied in HDF5 format. The data products are normally supplied by ASI and e-GEOS as a compressed tar archive (e.g., EL20111226_290160_1882296.6.2.tar.gz), which must be unpacked to reveal the HDF5 file inside (e.g., CSKS3_RAW_B_HI_03_HH_RD_SF_20111226151216_20111226151223.h5). Walter Szeliga has added COSMO-SkyMed support to his new SAR parsing code for ROI_pac available under ContribSoftware.