Broadband sonar target classification: Pool experiments

Pool experiments are used to address specific aspects of broadband sonar system performance. In this paper, we describe the results from a set of experiments conducted over a three-day period in a controlled environment. These pool experiments explored the target classification capabilities of the broadband sonar using targets of differing sizes and materials. Results obtained on single ping classification demonstrated at least 84.7% correct classification of targets of the same shape but of different size and material. The greatest classification confusion occurred between targets of the same shape and material and was only slightly different in size. When classifying different materials were compared, we found that the information provided in the spectra was sufficient to provide nearly 99% correct classification. These results indicate that the broadband sonar does have the potential to discriminate between various sizes and materials of the same shape and they further validate the use of broadband sonar as a tool for species and size classification of fish.