Array Effective Directivity Index with Gaussianly Perturbed Signal Wavefront.

摘要

In the design of large arrays, the question arises of possible directivity index degradation due to a randomly perturbed signal wavefront. In this memorandum, the array effective directivity index is found for such a situation as a function of the number of array elements, N, and average interelement correlation functions, for signal and noise sound fields. Developments are given for the cases of independent perturbations and Markov-Gaussian correlated perturbations. (Author)