Photogrammetric characterisation of concentrator surfaces


Fig. 1. SG4 dish with retro-reflective targets for photogrammetry measurement of mirror panel alignments.

This technique uses multiple photographs taken from different positions to deduce the three dimensional shape of a surface such as the mirror in a solar concentrator. Optical targets are placed or projected onto the surface to provide reference points ('targets') whose spatial coordinates can be determined with high accuracy—a precision of better than 1/100,000 of the scale of the object being measured can be attained.


  1. M. Shortis and G. Burgess. Photogrammetric monitoring of the construction of a solar energy dish concentrator. Photogrammetric Engineering and Remote Sensing, 78:519–527, 2012.

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