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Engine wind tunnel`s Doppler global velocity speed measurement correcting method, involves subtracting false light pattern from original reference image and original signal pattern to produce corrected reference and signal patterns
Engine wind tunnel`s Doppler global velocity speed measurement correcting method, involves subtracting false light pattern from original reference image and original signal pattern to produce corrected reference and signal patterns
The method involves sub-dividing light into strip patterns (RB1, RB2, SB1, SB2) comprising dark strips (1, 3, 5, 7), where each strip pattern is produced as a reference pattern and as a signal pattern. The intensities in the dark zones of each film pattern are interpolated over an entire image surface such that a pair of false patterns (RF1, RF2, SF1, SF2) occurs. The false light pattern is subtracted from an original reference image and an original signal pattern to produce a corrected reference pattern and a corrected signal pattern.
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