Concept
Sonar
Related publications (46)
Array-Fed Partially Reflective Surface Antenna With Independent Scanning and Beamwidth Dynamic Control
Julien Perruisseau-Carrier, Tomislav Debogovic
In this communication we present a concept of a partially reflective surface (PRS) antenna capable of independent beam-scanning and beamwidth dynamic control. The beamwidth is controlled by reconfiguring the PRS reflectivity via embedded varactor diodes, w ...
Institute of Electrical and Electronics Engineers2014On the issues related to compliance of LF pulsed exposures with safety standards and guidelines
In this paper, procedures to determine compliance of low-frequency pulsed exposures are investigated. Current methods specified by international standards or guidelines (e.g., from the ICNIRP or IEEE) are recognized to be conservative in order to account f ...
Institute of Physics2013Robust joint reconstruction of misaligned images using semi-parametric dictionaries
Pierre Vandergheynst, Gilles Puy
We propose a method for signal reconstruction in semi-parametric dictionaries. The proposed algorithm estimates both the signal decomposition and the intrinsic parameters of the dictionary during the reconstruction process. Some results about the convergen ...
2012Electroacoustic absorbers: Bridging the gap between shunt loudspeakers and active sound absorption
Romain Christophe Rémy Fleury, Hervé Lissek, Romain Boulandet
The acoustic impedance at the diaphragm of an electroacoustic transducer can be varied using a range of basic electrical control strategies, amongst which are electrical shunt circuits. These passive shunt techniques are compared to active acoustic feedbac ...
Acoustical Society of America2011Directionality control through selective excitation of low-order guided modes in thin-film InGaN photonic crystal light-emitting diodes
This letter explores the impact of quantum well placement and photonic crystal (PhC) etch depth on the emission directionality of thin-film InGaN PhC light-emitting diodes (LEDs). The far-field pattern of 800-nm-thick PhC LEDs is tuned by varying only the ...
Amer Inst Physics2011