Estimating Velocity in FM bats
Abstract
Even after more than 70 years of studying bat echolocation, we are still far from understanding some of its basic principles. One main important open question is: how bats assess the speed of a moving target. Many bats use short frequency modulated (FM) signals, which are far from ideal for using Doppler-shifts to assess speed. It thus remains unclear if these bats use Doppler-shifts or temporal information (integrating information over consecutive positions of the target) in order to assess the speed of a moving target. The main reason for our lack of knowledge is the difficulty to study such questions, which require control over the acoustic scene that the bat receives. In this project, we will develop new technology to do address this question. The new system that we will develop will include real time processing of echolocation signal recordings and play back of manipulated virtual echoes. This virtual reality approach will also allow probing other poorly understood aspects of the bat receiver model, moving us substantially closer to understanding bats phenomenal bio-sonar performance.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 13, 2018
- Source ID
- HR00111810005
Entities
People
- Yosef Yovel
Organizations
- Defense Advanced Research Projects Agency
- Tel Aviv University