BUG: Missing swaths for multiswaths Cosmo-SkyMed SCS data

sertit / eoreader

Remote-sensing opensource python library reading optical and SAR sensors, loading and stacking bands, clouds, DEM and spectral indices in a sensor-agnostic way.

https://eoreader.readthedocs.io/en/latest/

Apache License 2.0

271 stars 22 forks source link

BUG: Missing swaths for multiswaths Cosmo-SkyMed SCS data #78

Closed remi-braun closed 1 year ago

remi-braun commented 1 year ago

It seems that ESA SNAP only orthorectifies one swath of CSK SCS data:

2023-02-20_10h00_49

➡️ When opening the .h5 file in SNAP, only one swath is seen, so this is a SNAP issue.

WR number of swaths: 4 2023-02-21_09h43_33

It seems OTB and other softs are failing too...

remi-braun commented 1 year ago

One more reason to quit SNAP! #2

remi-braun commented 1 year ago

This seems to only affect the Wide Region product type, and doesn't affect neither the HImage nor the Enhanced Spotlight type....

2023-02-21_09h09_09

HI Number of swaths: 1 2023-02-21_09h41_47

S2 Number of swaths: 1 2023-02-21_09h42_28

remi-braun commented 1 year ago

CSG data in ScanSAR are also affected, but not in ping-pong... 2023-02-21_09h26_50

ScanSAR number of swaths : 4 2023-02-21_09h40_26

Pïng-pong number of swaths : 1 2023-02-21_09h40_48

remi-braun commented 1 year ago

✅ A workaround has been found:

Split the .h5 file into single-swaths (all renamed S01)
Pass to SNAP those single-swath cosmo products
Apply the classic GPT graph
Merge the results

Issue created for SNAP: https://forum.step.esa.int/t/missing-swaths-for-multiswaths-cosmo-skymed-scs-data/38672

remi-braun commented 1 year ago

Multiswath needs only a workaround for SCS data, not GRDH! 2023-03-23_13h25_15

💡 In fact, multi-swath GRDH data are working fine with SNAP.