Method for determination of the amount of sunshine at a given geographical location for use in solar location or shadow analysis is based on recording a wide-angle image of the horizon and superposing sun path lines on it

摘要

Method for time dependent determination of sunshine duration at a given location (2) has the following steps: (a) Taking of a photograph of the horizon with a with a camera (6) with a wide-angle objective (7) (b) superposition of sun path lines taken from a sun path diagram for the location on the photograph (c) determination of the contours of the horizon (d) checking where obstacles (14) cut the horizon contour.