Fidelity of low-frequency underwater acoustic measurements by sensors mounted on compact platforms
Abstract
Measurements by sensors mounted on compact platforms are affected by sound scattering from the platform. Assuming a spherical shape of the platform, this paper investigates the differences between the ambient and measured characteristics of low-frequency signals and noise for scalar and vector sensors. In the near field of the platform, low-frequency perturbations in oscillatory velocity are generally much larger than pressure perturbations. These perturbations prevent mounted vector sensors from correctly measuring the direction of the free-field oscillatory velocity. The feasibility of a compensation of the distortions in scalar and vector sensor measurements is discussed.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Nov 01, 2019
- Source ID
- 10.1121/1.5130755
Entities
People
- Oleg A. Godin
Organizations
- National Science Foundation
- Naval Postgraduate School
- Office of Naval Research