net.e175.klaus.solarpositioning

Class PSA

java.lang.Object

net.e175.klaus.solarpositioning.PSA

Deprecated.

PSA shouldn't be used after the year 2015.

public final class PSA
extends Object

Compute sun position for a given date/time and longitude/latitude. This is a simple Java port of the "PSA" solar positioning algorithm, as documented in: Blanco-Muriel et al.: Computing the Solar Vector. Solar Energy Vol 70 No 5 pp 431-441. http://dx.doi.org/10.1016/S0038-092X(00)00156-0 According to the paper, "The algorithm allows .. the true solar vector to be determined with an accuracy of 0.5 minutes of arc for the period 1999–2015."

Author:

Klaus A. Brunner

Method Summary

Modifier and Type	Method and Description
static AzimuthZenithAngle	calculateSolarPosition(GregorianCalendar date, double latitude, double longitude) Deprecated. Calculate sun position for a given time and location.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

calculateSolarPosition

public static AzimuthZenithAngle calculateSolarPosition(GregorianCalendar date,
                                                        double latitude,
                                                        double longitude)

Deprecated.

Calculate sun position for a given time and location.

Parameters:

date - Note that it's unclear how well the algorithm performs before the year 1990 or after the year 2015.

latitude - in degrees (positive east of Greenwich)

longitude - in degrees (positive north of equator)

Returns:

Topocentric solar position (azimuth measured eastward from north)