A new method of calibrating the spatial coordinate coherence of shadowgraph-taking camera stations at the long distance with PSD
2012
The main method of the attitude measurement is to get series of graphs for analyzing the changing attitude of the
projectile by utilizing multiple shadowgraph-taking camera stations.However,the premise of accurate results is that
feature points on graphs must match its spatial coordinate in a certain spatial coordinate.Addressing to this
problem,combining the optical lever principle and the PSD,we propose a method of calibrating the spatial coordinate
coherence of the long distance and multiple shadowgraph-taking camera stations,and analyze the measurement accuracy
and repeatability of this method.According to the results,the accuracy of this calibration method is superior to 0.1mm .
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