Results 91 to 100 of about 12,655 (183)

Controlling AoA Estimation Errors in Rician Fading via Measurement Quality Classification

IEEE Access
Angle of Arrival (AoA) estimation plays a crucial role in modern positioning systems but is often affected by errors in multipath channels. Existing methods typically lack a direct mechanism to assess the quality of the estimates, while full channel ...
Pedro Lemos, Glauber Brante, Ohara Kerusauskas Rayel, Richard Demo Souza   +3 more
doaj   +1 more source

Angle of Arrival Estimation Using Cholesky Decomposition

International Journal of Antennas and Propagation, 2012
An angle of arrival (AOA) estimator is presented. Many applications require accurate AOA estimates such as wireless positioning and signal enhancement using space-processing techniques. The proposed AOA estimator depends on the Cholesky decomposition of
Saleh O. Al-Jazzar
doaj   +1 more source

Distributed localization of a RF target in NLOS environments

, 2014
We propose a novel distributed expectation maximization (EM) method for non-cooperative RF device localization using a wireless sensor network. We consider the scenario where few or no sensors receive line-of-sight signals from the target. In the case of
Leng, Mei, Quitin, Francois, Razul, Sirajudeen G., Tay, Wee Peng, Xu, Wenjie   +4 more
core   +1 more source

Dynamic Stall Characteristics of Thick Wind Turbine Airfoils

Wind Energy, Volume 28, Issue 11, November 2025.
ABSTRACT This paper studies the dynamic stall characteristics of thick flatback and nonflatback wind turbine airfoils. Two airfoils with a maximum thickness of 35%$$ 35\% $$ were studied, with trailing edge thicknesses of 2%$$ 2\% $$ and 10%$$ 10\% $$, respectively.
Mehdi Doosttalab, Carlos Simao Ferreira, Daniele Ragni, Wei Yu, Christof Rautmann   +4 more
wiley   +1 more source

A Fuzzy-Based Angle-of-Arrival Estimation System (AES) Using Radiation Pattern Reconfigurable (RPR) Antenna and Modified Gaussian Membership Function

IEEE Access, 2019
Angle-of-arrival (AOA) estimation is an important factor in various wireless sensing applications, especially localization systems. This paper proposes a new type of AOA estimation sensor node, known as AOA-estimation system (AES) where the received ...
Mohd Ilman Jais, Thennarasan Sabapathy, Muzammil Jusoh, R. Badlishah Ahmad, Mohd Haizal Jamaluddin, Muhammad Ramlee Kamarudin, Phaklen Ehkan, L. Murukesan Loganathan, Ping Jack Soh   +8 more
doaj   +1 more source

Effects of Halloysite Nanotubes on Binary Blends of Thermoplastic Starch With Polyhydroxybutyrate and Polylactic Acid: Investigation of Morphological, Rheological, Mechanical, and Thermal Properties

Polymer Engineering &Science, Volume 65, Issue 10, Page 5182-5200, October 2025.
Halloysite nanotubes (HNTs) resulted in an improved compatibility in binary blends of Thermoplastic Starch with Polyhydroxybutyrate and Polylactic Acid. ABSTRACT This study explores the influence of halloysite nanotubes (HNTs) on the morphological, rheological, and thermal properties of biodegradable thermoplastic starch (TPS) blends with ...
Soheil Farshbaf Taghinezhad, Mohammadreza Mansourieh, Amin Abbasi, Mohammadnabi Hesabi, Olivia A. Attallah, Ian Major, Romina Pezzoli   +6 more
wiley   +1 more source

Anomalous Radio-Wave Scattering from Interstellar Plasma Structures

, 2000
This paper considers scattering screens that have arbitrary spatial variations of scattering strength transverse to the line of sight, including screens that are spatially well confined, such as disks and filaments.
Ananthakrishnan S., Anantharamaiah K. R., Hankins T. H., J. M. Cordes, Kahn F., Kassim N. E., Krichbaum T. P., Lyne A. G., Marcaide J. M., T. Joseph W. Lazio, Wilkinson P. N., Williamson I. P., Williamson I. P., Williamson I. P.   +13 more
core   +1 more source

Cooperative and Distributed Localization for Wireless Sensor Networks in Multipath Environments

, 2011
We consider the problem of sensor localization in a wireless network in a multipath environment, where time and angle of arrival information are available at each sensor.
Leng, Mei, Quek, Tony Q. S., Tay, Wee Peng   +2 more
core   +1 more source

A Joint Decoherence-Based AOA and TDOA Positioning Approach for Interference Monitoring in Global Navigation Satellite System

Applied Sciences
Global navigation satellite system (GNSS) has been widely used in many fields due to their low cost and high positioning accuracy. Because of the open frequency of navigation signals, the low power of navigation signals, and the growing reliance of many ...
Wenjian Wang, Yinghong Wen, Yongxia Liu
doaj   +1 more source

Channel Estimation For Mimo-Ofdm Systems of Joint Angle-of-Departure (AOD) or Angle-of-Arrival (AOA)

International Journal of Innovative Technology and Exploring Engineering, 2019
Beamforming with gathering mechanical assembly displays has been considered as an engaging advancement in future remote correspondence structures. To coordinate beamforming, one has to know the angle-of-departure (AoD) or angle-of-arrival (AoA). For data disclosure, the beneficiary in like manner has to know station response.
openaire   +1 more source