Q:

Create true color image from Sentinel-1 data

Is it possible to create or extract a true color (RGB) image from Sentinal-1 satellite data? 
Like with Landsat8 data described in this article https://scientiaplusconscientia.wordpress.com/2014/11/18/working-with-landsat-8-a-tutorial-2-creating-simple-composites/

A:

This is physically impossible due to Sentinel-1 using a SAR (Synthetic Aperture Radar) sensor instead of an optical sensor.
You can create false color RGB images from SAR data but no true color RGB.
If you are looking for optical remote sensing imagery, besides Landsat, the recently launched Sentinel-2 is expected to deliver it's first images soon.

