Why does the resolution decrease with increasing incidence angle in the Sentinel-1 SA

[المشرف العام]

On this link (Sentinel1 webpage for a SLC product), the resolution is written as a range from the highest corresponding to low incidence angle, to the lowest resolution corresponding to high incidence angle.

My question is how is the resolution related in general to the incidence angle? And if they are really related, why is the resolution affected by the change in the incidence angle?

Thanks



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