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Sentinel-2 and Sentinel-3 products can spread over several UTM zones. At the moment only one UTM zone can be specified for the product, having a product over several UTM zones is not supported.
This would consist in extending the API to specify an UTM zone while opening the product. On the HMI this would mean a new interface to let the user choose the reference UTM zone, on the GPT this would mean an extra option for the UTM zone. Granules on different UTM zones would be reprojected on the main UTM zone. By default the main UTM zone would be selected.
Pros:
Cons:
As for the solution 1. , the API would be extend to display only tiles that are on a selected UTM zone. By default the main UTM zone would be selected.
Pros:
Cons:
This would consist in using the multi-resolution change to assiciate an UTM zone for each granule.
On the SNAP HMI this means having different bands for granules with different UTM zones, and regrouping granules per UTM zones, by example:
\[1\] ProductName
+Metadata
- Bands
- UTM31
UTM31_B1
UTM31_B2
UTM31_B3
UTM31_B4
- UTM32
UTM32_B1
UTM32_B2
UTM32_B3
UTM32_B4
Pros:
Cons:
If compatible with the SNAP product model, the last option is prefered.