This paper presents practical design of a smart antenna system based on direction-of-arrival estimation and adaptive beam forming. Direction-of-arrival (DOA) estimation is based on the MUSIC algorithm for identifying the directions of the source signals incident on the sensor array comprising the smart antenna system. Adaptive beam forming is achieved using the LMS algorithm for directing the m...

Near-field source localization problem by a passive antenna array makes the assumption that the time-varying sources are located near the antenna. In this context, the far-field assumption (i.e., planar wavefront) is, of course, no longer valid and one has to consider a more complicated model parameterized by the bearing (as in the far-field case) and by the distance, named range, between the s...

upwelling areas in the ocean are important places for fishing as nutrients can be transported from deeper area to the near surface region. in this study, the upwelling in the eastern coastal area of the caspian sea for 2004 was studied using coherens, a three-dimensional ocean model. in order to simulate the circulation in the caspian sea, the gridded fields were chosen as 0.046 × 0.046 degrees...

In this work we propose novel decision feedback (DF) detection algorithms with error propagation mitigation capabilities for multiinput multi-output (MIMO) spatial multiplexing systems based on multiple processing branches. The novel strategies for detection exploit different patterns, orderings and constraints for the design of the feedforward and feedback filters. We present constrained minim...

Sea surface wind streak is one of many geophysical phenomena in synthetic aperture radar (SAR) images, which often used to obtain sea direction. At present, the recognition streaks mainly depends on artificial experience, and efficiency accuracy are not high. In this study, transfer learning based convolutional neural network architecture Inception v3 was introduced streaks. Four categories ima...

This paper presents a tool for the modelling, analysis and simulation of direction-of-arrival (DOA) estimation and adaptive beamforming needed in the design of smart antenna arrays for wireless mobile communications. The developed tool implements the Minimum Variance Distortionless Response (MVDR) algorithm for DOA estimation and the Least Mean Squares (LMS) algorithm for adaptive beamforming. ...

This paper presents of Smart antenna system based on the direction of arrival (DOA) estimation and adaptive beamforming. Direction of arrival (DOA) estimation is based on the MUSIC for identify the direction of signal and adaptive beamforming is achieved by LMS algorithm. The smart antenna system designed involves a hardware part which provides real data measurement of the incident signal recei...

Using results stemming from the International Trans-Antarctic Scientific Expedition (ITASE) ice-core array plus data from ice cores from the South Pole and Siple Dome we investigate the use of sodium (Na), non-sea-salt sulfate (nssSO4 ) and methylsulfonate (MS) as proxies for Antarctic sea-ice extent (SIE). Maximum and mean annual chemistry concentrations for these three species correlate signi...