The coupling of waves between the piezoelectric generators, detectors, and propagating
media is challenging due to mismatch in the acoustic properties. The mismatch leads to the …

Positioning systems have become increasingly popular in the last decade for location-based
services, such as navigation, and asset tracking and management. As opposed to outdoor …

Biologically inspired by natural skin, polypropylene (PP) ferroelectret films with a human skin-
like texture, featuring lightweight, light transmittance, small thickness, stretchability, as well …

The book is an edited collection of research articles covering the current state of sonar
systems, the signal processing methods and their applications prepared by experts in the …

An air-coupled acoustic matching layer, based on hollow glass microsphere composite, was
developed for air-coupled ultrasonic transducers. The effects of the matrix, powder series …

Due to the low efficiency of traditional design method, an efficient optimization design
method is developed to design and fabricate high-performance ultrasonic transmitting …

Laminated fluoropolymer films with a regular microstructure were made from compact
fluoroethylenepropylene (FEP) and porous polytetrafluoroethylene (PTFE) using a process …

Concerns still exist over the safety of prolonged exposure to radio frequency (RF) wireless
transmissions and there are also potential data security issues due to remote signal …

Motion capture and human body pose estimation systems have become a more common
appliance nowadays because of the movie and video game industry. These measurement …

This paper describes a first prototype of an airborne ultrasonic array that combines pulse-
compression techniques with positioning algorithms in order to achieve accurate …