Results 61 to 70 of about 1,693,030 (143)

Direction of Arrival Estimation for the Coexistence of Uncorrelated and Coherent Signals via Rotation Spatial Differencing Method

open access: yesIEEE Open Journal of Signal Processing
This paper presents a novel direction of arrival (DOA) estimation method via rotation spatial differencing technique that offers high resolution, robustness, and stable performance. To suppress external environmental noise and improve estimation accuracy,
Peng Luo, Boyu Pang, Defeng Wu, W. Zeng
doaj   +1 more source

Topics in the accuracy and resolution of superresolution systems [PDF]

open access: yes, 2009
Since their introduction in the 1970s and 1980s superresolution systems for point source parameter estimation have received theoretical attention regarding their potential performance.
Brandwood, D.
core  

Combustion Analysis of a CI Engine with Biodiesel Blends based on Vibro-Acoustic Measurement [PDF]

open access: yes
In this paper, a combustion analysis of a compression ignition (CI) engine operating with biodiesel blends has been experimentally investigated to examine the effects of biodiesel on the combustion process and the characteristics of the engine noise ...
Gu, Fengshou   +4 more
core   +3 more sources

Metasurface Sensing Approach to DOA Estimation of Coherent Signals [PDF]

open access: yes, 2023
The DOA estimation method of coherent signals based on periodical coding metasurface is proposed. After periodical coding, the DOA information of incident signals in the time domain is represented as the amplitude and phase information at different ...
Xu, Yougen, Hu, Yan, Zhao, Yishuo
core  

A Novel DOA Estimation Approach for Unknown Coherent Source Groups with Coherent Signals

open access: yesIranian Journal of Electrical and Electronic Engineering, 2015
In this paper, a new combination of Minimum Description Length (MDL) or Eigenvalue Gradient Method (EGM), Joint Approximate Diagonalization of Eigenmatrices (JADE) and Modified Forward-Backward Linear Prediction (MFBLP) algorithms is proposed which ...
Sh. Shirvani Moghaddam   +2 more
doaj  

Non-Coherent Code Acquisition in the Multiple Transmit/Multiple Receive Antenna Aided Single- and Multi-Carrier DS-CDMA Downlink

open access: yes, 2007
We analyse the characteristics of the Non-Coherent (NC) Multiple Transmit/Multiple Receive (MTMR) antenna aided Multi-Carrier (MC) DS-CDMA downlink employing a serial search based acquisition scheme, when communicating over spatially uncorrelated ...
Won, SH, Hanzo, L
core   +1 more source

Quasiparticle representation of coherent nonlinear optical signals of multi-excitons

open access: yesNew Journal of Physics, 2013
Multi-exciton Green's functions and scattering matrices in many-fermion systems are calculated using a quasiparticle approach based on a generalized Bethe–Salpeter equation.
Oleksiy Roslyak   +3 more
doaj   +1 more source

Applications of the Wigner Distribution Function in Signal Processing

open access: yesEURASIP Journal on Advances in Signal Processing, 2005
We present a review of the applications of the Wigner distribution function in various areas of signal processing: amplitude and phase retrieval, signal recognition, characterization of arbitrary signals, optical systems and devices, and coupling ...
Dragoman Daniela
doaj   +1 more source

Method of Non-Coherent Detection of Repeated Signals

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2016
Algorithms to detect of repeated signals based on the theory of optimal rules of observation stopping are developed. Analytical expressions for probabilities of correct detection and false alarm are obtained when the signal is detected in a separate ...
A. P. Los’, A. K. Rozov
doaj  

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