A human-symbiotic robot called “EMIEW2” and its auditory function which includes two noise reduction methods against self-generated mechanical noise and external floor-level noise is introduced. The former type of noise is produced by the robot itself, and this is a difficult problem because it can be loud, nonstationary, and have a wide frequency band. We adopt a maximized SNR technique, in wh...

In this paper, a novel two-dimensional super-resolution angle-of-departure (AoD) and angle-ofarrival (AoA) estimation technique is proposed for wideband millimeter-wave multiple-input multipleoutput systems with cross-polarized antenna elements. The key ingredient of the proposed method is to form custom designed beam pairs, and devise an invertible function of the AoD/AoA to be estimated from ...

Synthetic aperture radar (SAR) automatic target recognition (ATR) has been receiving more and more attention in the past two decades. But the problem of how to overcome SAR target ambiguities and azimuth angle variations has still left unsolved. In this paper, a multi-scale local phase quantization plus biomimetic pattern recognition (BPR) method is presented to solve these two difficulties. By...

Surface roughness is an important factor in many soil moisture retrieval models. Therefore, any mischaracterization of surface parameters (root mean square height, RMSH, and correlation length, ?) may result unreliable predictions estimations. In environments, but particularly agricultural settings, show different behaviours with respect to the orientation or azimuth. Consequently, relationship...

3-D prestack common-azimuth depth migration (CAM) has strong potential for accurately imaging complex media and correctly handling multi-pathing. Here, we apply the technique to a North Sea dataset recorded over a salt dome region. The results obtained demonstrate the suitability of the method for complex media, and illustrate important differences with Kirchhoff methods. A detailed analysis of...

ABSTRACT A circularly polarized heterodyne light beam is incident on a thin metal film, causing successive reflections and refractions to occur at the two sides of the thin film. The phase difference between pand s-polarizations of the multiple-beam interference signal can be measured accurately with an analyzer and heterodyne interferometry. The phase difference depends on the azimuth angle of...

Capacity increases promised by Multiple-Input Multiple-Output (MIMO) systems mostly depend on the spatial correlation properties of the radio channel. This paper investigates the connection between these properties and the capacity figures. It first derives the correlation coefficient between two antenna elements as a function of their spacing, the Power Azimuth Spectrum (PAS), the Azimuth Spre...

The filamentation of focused 300 fs laser pulses with variable polarization azimuth in bulk synthetic HPHT diamond demonstrates the possibility polarization-dependent bandgap control for crystal dielectric photoexcitation. This directly affects value threshold power, which exhibits distinct dependence on angle. nonlinear photoluminescence yield, when focusing ultrashort diamond, indicates diffe...