Aero‐Optical Jitter

This chapter discusses experimental studies of aero‐optical component of beam jitter. Various contaminations of aero‐optical beam jitter in typical tunnel environment, like mechanically induced jitter, and possible means to remove them from the data are discussed. A newly developed stitching method, which provides robust means of extracting aero‐optical jitter from experimental data, is presented in detail. The stitching method was demonstrated to be useful in extracting statistics of aero‐optical component of jitter for turbulent boundary and shear layers.