SLC edge cleaning applicable to GRD?

[johntruckenbrodt]

The SNAP processing workflow performs a S1_NRB.snap.postprocess step, in which the edges of an SLC are eroded to remove border noise effects. It needs to be revised whether the number of four pixels defined for erosion is applicable to GRD as well. GRD border noise removal is performed, however this step is known to give different results depending on the Sentinel-1 IPF version. Furthermore, border noise pixels have been observed for different products which might be caused by incorporation of nodata areas (value 0) into image resampling.