Conclusion - Furuno WR2120 Installation Manual

Weather radar

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8) Adjust both (A) Sector PPI and (B) Sector RHI to complete them.

Notice:

Do not forget to do the [Auto ground clutter mapping] after changed value of the [Origin EL position

offset correction]. (Refer to the "Operator's manual" for operation)

5.3.6. Conclusion

Calculation of the solar position:

This software uses "Astronomical algorithms" created by Jean Meeus to calculate algorithms of

the solar position.

The accuracy of this algorithm on longitude is +/- 72 degrees of range within 0.0167 degrees.

However accuracy depends on atmospheric temperature, pressure, and humidity. Therefore

under certain circumstances accuracy may be very poor.

Currently the solar azimuth value is properly corrected when refraction of atmospheric

conditions are properly considered.

Reference: U. S. Department of Commerce / National Oceanic & Atmospheric Administration / NOAA

Research / Earth System Research Laboratory (ESRL)

https://www.esrl.noaa.gov/gmd/grad/solcalc/calcdetails.html

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