Experimental study on subaperture testing with iterative triangulation algorithm

Applying the iterative triangulation stitching algorithm, we provide an experimental demonstration by testing a Phi 120mm flat mirror, a Phi 1450mm off-axis parabolic mirror and a convex hyperboloid mirror. By comparing the stitching results with the self-examine subaperture, it shows that the reconstruction results are in consistent with that of the subaperture testing. As all the experiments are conducted with a 5-dof adjustment platform with big adjustment errors, it proves that using the above mentioned algorithm, the subaperture stitching can be easily performed without a precise positioning system. In addition, with the algorithm, we accomplish the coordinate unification between the testing and processing that makes it possible to guide the processing by the stitching result. (c) 2013 Optical Society of America