Title: Determination of sperm whale orientation with respect to a single hydrophone
Abstract: Sperm Whales (Physter macrocephalus) produce echolocation clicks composed of several pulses while searching for food when diving. An estimate of a whale's length can be calculated by determining the time interval between consecutive pulses in the echolocation click. That interval is the interpulse interval or IPI. We have developed methods to estimate the IPI of whales and thereby determine their lengths. The structure of a click from a sperm whale approaching a hydrophone is different from that of a whale moving away from a hydrophone (Zimmer, 2005). The methods we use to determine IPIs differ depending upon whether the clicks analyzed are from an approaching or leaving whale. Continuous Wavelet Transforms are used to determine if the clicks to be analyzed were produced by an approaching or leaving whale. The IPIs of data files from a mixture of approaching and leaving whales were analyzed by our method with good agreement with manual determinations of the IPIs.
Publication Year: 2020
Publication Date: 2020-10-01
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot