Results 41 to 50 of about 301,173 (181)

UWB Indoor Localization Based on Artificial Rabbit Optimization Algorithm and BP Neural Network

Biomimetics
In the field of ultra-wideband (UWB) indoor localization, traditional backpropagation neural networks (BPNNs) are limited by their susceptibility to local minima, which restricts their ability to achieve global optimization.
Chaochuan Jia, Can Tao, Ting Yang, Maosheng Fu, Xiancun Zhou, Zhendong Huang   +5 more
doaj   +1 more source

A Single-Shot Non-Line-of-Sight Range-Finder

Sensors, 2019
The ability to locate a target around a corner is crucial in situations where it is impractical or unsafe to physically move around the obstruction. However, current techniques are limited to long acquisition times as they rely on single-photon counting ...
James Brooks, Daniele Faccio
doaj   +1 more source

NBursts: Simultaneous Extraction of Internal Kinematics and Parametrized SFH from Integrated Light Spectra

, 2007
We present a novel approach for simultaneous extraction of stellar population parameters and internal kinematics from the spectra integrated along a line of sight.
Chilingarian, Igor, Koleva, Mina, Prugniel, Philippe, Sil'chenko, Olga   +3 more
core   +1 more source

Safety-Guaranteed, Robust, Nonlinear, Path-Following Control of the Underactuated Hovercraft Based on FTESO

Journal of Marine Science and Engineering, 2023
On account of the external disturbances and difficult maneuverability of a hovercraft, this paper devises a safety-guaranteed, robust, nonlinear, path-following control strategy of a hovercraft targeted for unknown dynamics, unavailable velocity, and ...
Mingyu Fu, Qiusu Wang
doaj   +1 more source

Velocity moments of dark matter haloes

, 2005
Using cosmological N-body simulations we study the line-of-sight velocity distribution of dark matter haloes focusing on the lowest-order even moments, dispersion and kurtosis, and their application to estimate the mass profiles of cosmological ...
Gottloeber, Stefan, Lokas, Ewa L., Mamon, Gary A., Wojtak, Radoslaw   +3 more
core   +1 more source

Rooftop and indoor reception with transmit diversity applied to DVB-T networks: A long term measurement campaign [PDF]

, 2009
Although transmit Delay Diversity (DD) can provide a gain in indoor and other Non Line of Sight situations (NLOS), it can introduce degradation in rooftop reception. In fact, when the Ricean K factor of the channel is significantly high (e.g.
Arrinda, A, Bard, M, Bari, RD, Cosmas, J, Ditto, P, Loo, KK, Nilavalan, R   +6 more
core   +1 more source

Understanding the Geometry of Astrophysical Magnetic Fields

, 2009
Faraday rotation measurements have provided an invaluable technique with which to measure the properties of astrophysical magnetized plasmas. Unfortunately, typical observations provide information only about the density-weighted average of the magnetic ...
Agol, Avery E. Broderick, Bahcall, Bastian, Bjornsson, Broderick, Budden, Budden, Crutcher, Falcke, Ghez, Gillessen, Ginzburg, Han, Jorstad, Kharb, Lacki, Lang, LaRosa, Law, Lister, Lister, Lister, Lister, Loeb, Macquart, Manchester, Mancuso, Marrone, Porcas, Quataert, Roger D. Blandford, Taylor, Taylor, Taylor, Thompson, Udomprasert, Uyaniker, Wilson, Yuan, Yusef-Zadeh, Zavala, Zavala, Zheleznyakov, Zheleznyakov   +44 more
core   +1 more source

Improved Kalman filter indoor positioning algorithm based on CHAN

Tongxin xuebao, 2023
Due to the raising complexity of the indoor environment, the influence of the non-line-of-sight error is gradually increasing in indoor positioning.How to reduce the non-line-of-sight error in the indoor positioning environment is particularly ...
Rui JIANG, Yue YU, Youyun XU, Xiaoming WANG, Dapeng LI   +4 more
doaj   +2 more sources

Modeling the X-ray light curves of Cygnus X-3. Possible role of the jet [PDF]

, 2012
Context: Physics behind the soft X-ray light curve asymmetries in Cygnus X-3, a well-known microquasar, was studied. AIMS: Observable effects of the jet close to the line-of-sight were investigated and interpreted within the frame of light curve physics.
Hannikainen, Diana Carina, Vilhu, Osmi
core   +3 more sources

An Adaptive Fading CKF-Based Strapdown Rotating Projectile Line-of-Sight Rate Filtering Algorithm [PDF]

Hangkong bingqi
In response to the strong coupling between line-of-sight angular rate and attitude error in the output of the strapdown rotating projectile, a method based on adaptive fading volume covariance Kalman filtering (AFCKF) is proposed.
Xia Shuhan, Fan Junfang, Ji Yi, Wang Wei, Chen Shiwei, Ma Qiancai
doaj   +1 more source