SNAP not make calibration radiometric of the data

[ABraun]

Have you installed the 64 bit version of SNAP? This makes s clear difference.

You also have to make sure that SNAP makes full use of the RAM

Error when calibrating Sentinel 1 data "cannot construct data buffer"

Something doesn’t seem right. The symptoms are of not having enough memory but 16GB should be great. Are you running SNAP-Desktop or GPT? Have a look at the Tools -> Options -> Performance and see that the settings for the JVM look ok. Are they the default settings? When this happens, is your memory almost at the maximum? If you had little memory and got this, I would say to check using the file cache for Sentinel-1 reading in the S1TBX options. You could try this. Also, look at where you’re …

Sentinel 1 toolbox memory increase

Are you referring to Version 1.* of S1TBX or to the SNAP 2.0 preview version? For Version 1.* you can edit the file s1tbx.vmoptions, located in the installation directory. You can increase the value for the Xmx parameter e.g. -Xmx5705M The value is dependent on the amount of available RAM on your computer. By default it is set to 70%, if I remember correctly. In Snap 2.0 you can look into the snap.conf file in the etc folder of the installation directory. in the default_options line there i…