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I have searched in google about solar tracking system. In below links everyone calculate zenith and azimuth angle.But azimuth angle get change after 12 PM.In below all algorithm azimuth either measured from east to north or west to south. If need azimuth angle from east to west what alternation need be done. I have question as follows

  1. How sun elevation angle is being calculated
  2. how zenith and azimuth angle help to determine elevation angle.
  3. Nrel gives sun path algorithm , where we get zenith and azimuth angle.
  4. how to use azimuth angle to determine supposition from east to west.

Angle azimuth

Azimuth angle Ardunio tracker



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What do you mean by "from east to north or west to south"? Azimuth is always the angle between a sky point and south. Elevation is 90°-zenithal distance. If you just need an approximation (e.g. for games) you can take a look at my blog post. The first part describes the related astronomy. – Nico Schertler Mar 20 '14 at 10:55
Just check []. if you put some arbitary value you will get zenith and azimuth angle. Here what is meantion in line 2 – AMPS Mar 20 '14 at 11:07
I still don't get your problem. Do you just want to convert angles to some different representation? This should be possible by simply adding and/or inverting the angles. – Nico Schertler Mar 24 '14 at 11:23
i wanted to determine Sun position w.r.t my tracker.zenith and azimuth gives sun position. my sensor measure angle from + or- 90 degree. SO i wanted to convert azimuth angle to + or - 90 degree to measure sun angle from east to west – AMPS Mar 25 '14 at 4:05

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