NPAL Acoustic Noise Field Coherence and Broadband Full Field Processing

The objectives are i) to characterize the ambient noise field coherence for the data recorded on the North Pacific Acoustic Laboratory (NPAL) and ii) to apply broadband, full field processing to characterize the sources in the local environment. Coherence measurements based upon field data are fundamental to understanding how the various sources of the ambient noise superimpose and lead to both the observed spectral covariances and to the performance of advanced array processing algorithms such as matched field processing.. The data from the NPAL vertical line arrays (VLA’s) are broadband and have an accurate array element positioning system, so we examining the potential for broadband, full field processing.