Results 21 to 30 of about 58,862 (263)

Azimuth phase coding for range ambiguity suppression in SAR [PDF]

open access: yesIEEE International IEEE International IEEE International Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004, 2004
A novel ambiguity suppression technique is proposed. Range ambiguities in synthetic aperture radar (SAR) images are eliminated with an azimuth filter after having applied an azimuth phase modulation to the transmitted pulses and a corresponding demodulation to the received pulses. The technique excels by actually eliminating the ambiguities rather than
Jørgen Dall, Anders Kusk
openaire   +1 more source

Developing and Implementing an Educational Program about Strategies and Skills of Ambiguity Management for Nurse Managers [PDF]

open access: yesEgyptian Journal of Health Care, 2019
This study aims to Developing and Implementing an Educational Program about Strategies andSkills of Ambiguity Management for Nurse Managers to improve the organization change in topositive manner.
Asmaa Mohamed Ahmed Maiz   +1 more
doaj   +1 more source

Single-Frequency GNSS Integer Ambiguity Solving Based on Adaptive Genetic Particle Swarm Optimization Algorithm

open access: yesSensors, 2023
Carrier phase measurements currently play a crucial role in achieving rapid and highly accurate positioning of global navigation satellite systems (GNSS). Resolving the integer ambiguity correctly is one of the key steps in this process.
Ying-Qing Guo   +4 more
doaj   +1 more source

Crichton's phase-shift ambiguity

open access: yesNuclear Physics B, 1973
A re-examination of the SPD phase-shift ambiguity is made with a view to understanding certain singular features of the elastic unitarity constraint. An explicit solution of Crichton's equations is presented, and certain features of this solution are displayed graphically.
Atkinson, D.   +3 more
openaire   +2 more sources

Optimal observables and phase-space ambiguities [PDF]

open access: yesThe European Physical Journal C, 2005
Optimal observables are known to lead to minimal statistical errors on parameters for a given normalised event distribution of a physics reaction. Thereby all statistical correlations are taken into account. Therefore, on the one hand they are a useful tool to extract values on a set of parameters from measured data. On the other hand one can calculate
Nachtmann, Otto, Nagel, Felix
openaire   +2 more sources

Joint Estimation and Decoding of Space-Time Trellis Codes

open access: yesEURASIP Journal on Advances in Signal Processing, 2002
We explore the possibility of using an emerging tool in statistical signal processing, sequential importance sampling (SIS), for joint estimation and decoding of space-time trellis codes (STTC).
Zhang Jianqiu, Djurić Petar M
doaj   +1 more source

High-precision indoor fast positioning algorithm based on carrier phase

open access: yesTongxin xuebao, 2022
In order to improve the positioning accuracy and the speed of position solution in indoor wireless environment, a high-precision indoor fast positioning algorithm based on carrier phase was proposed.By introducing the reference terminal, the influence of
Shaoshuai FAN   +3 more
doaj   +2 more sources

Ambiguity resolution for integrable gravitational charges

open access: yesJournal of High Energy Physics, 2022
Recently, Ciambelli, Leigh, and Pai (CLP) [ arXiv:2111.13181 ] have shown that nonzero charges integrating Hamilton’s equation can be defined for all diffeomorphisms acting near the boundary of a subregion in a gravitational theory.
Antony J. Speranza
doaj   +1 more source

Ambiguity Analysis and Resolution for Phase-Based 3D Source Localization under Given UCA

open access: yesInternational Journal of Antennas and Propagation, 2019
Under uniform circular array, by employing some algebraic schemes to exploit the phase information of receiving data and further estimate the source’s three-dimensional (3D) parameters (azimuth angle, elevation angle, and range), a series of novel phase ...
Zhen Liu   +5 more
doaj   +1 more source

Multi-GNSS Relative Positioning with Fixed Inter-System Ambiguity

open access: yesRemote Sensing, 2019
In multi-GNSS cases, two types of Double Difference (DD) ambiguity could be formed including an intra-system ambiguity and an inter-system ambiguity, which are identified as the DD ambiguity between satellites from the same and from different GNSS ...
Hua Chen, Weiping Jiang, Jiancheng Li
doaj   +1 more source

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