SLSTR provides so many bands that I do not know what to rely on.
The question is very technical: what are physically stripe A, stripe B, TDI.
I understand that A gives 500m band a in visible and SWIR, B - 500m SWIR as in Table 7-3 in SLSTR product data format specification PDF.
However, I would like to know where these stripes come from?
Is it the result of a “dual view”? The “Blue” stripe is the stripe A, the “Green” stripe is the stripe B. TDI is their combination, then.
yes, you are correct. The right/blue detector elements are present on channels S1-S6, the left/green only ones on channels S4-S6. The detectors retrieve the images simultaneously for both element sets and thereby receive two different images (with different geo-codings, flag sets, etc.). The TDI- (or c-)stripe is a combination of the both.
You can find this info here https://sentinel.esa.int/web/sentinel/user-guides/sentinel-3-slstr/resolutions/spatial/500m
and here https://sentinel.esa.int/web/sentinel/technical-guides/sentinel-3-slstr/level-1/time-domain-averaging .