New Method for the Eduction of Natural Coherent Structures

摘要

NATURAL large-scale coherent structure eduction is generally known to be troublesome. Even though these large-scale structures are repetitive, they are difficult to educe due to jitter and the natural variations in the structure shape, size, orientation, passage time, and trajectory. '~3 Earlier these structures were studied using artificial excitation (acoustical, mechanical, etc.). It was assumed that the excited structures were approximately the same as the natural ones if low-level excitation were used.