Results 61 to 70 of about 89,960 (192)
Surface theorem for the Chern-Simons axion coupling [PDF]
, 2016 The Chern-Simons axion coupling of a bulk insulator is only defined modulo a quantum of e^2/h. The quantized part of the coupling is uniquely defined for a bounded insulating sample, but it depends on the specific surface termination.
Olsen, Thomas +3 more
core +2 more sources
Vector Ambiguity and Freeness Problems in SL (2, ℤ). [PDF]
, 2017 We study the vector ambiguity problem and the vector freeness problem in SL(2,Z). Given a finitely generated n×n matrix semigroup S and an n-dimensional vector x, the vector ambiguity problem is to decide whether for every target vector y=Mx, where M∈S ...
Ko, S, Potapov, I
core +2 more sources
OFDM-Based Carrier Phase Localization With Integer Ambiguity Resolution
IEEE AccessThis study introduces a two-stage Time Difference of Arrival (TDoA) localization method using OFDM signals with carrier-phase measurements. Unlike conventional methods, our approach uniquely resolves integer ambiguities in carrier-phase signals by ...
Jai Hyung Cho, Jie Hyun Lee
doaj +1 more source
Improved GPS-based Satellite Relative Navigation Using Femtosecond Laser Relative Distance Measurements [PDF]
Journal of Astronomy and Space Sciences, 2016 This study developed an approach for improving Carrier-phase Differential Global Positioning System (CDGPS) based realtime satellite relative navigation by applying laser baseline measurement data.
Hyungjik Oh +4 more
doaj +1 more source
Improved GNSS Ambiguity Fast Estimation Reduction Algorithm
Sensors, 2023 The fast and accurate solution of integer ambiguity is the key to achieve GNSS high-precision positioning. Based on the lattice theory of high-dimensional ambiguity solving, the reduction time consumption is much larger than the search time consumption ...
Xinzhong Li +4 more
doaj +1 more source
Integer Ambiguity Fixation Based on SC-PAR Algorithm
Journal of Physics: Conference Series, 2021 Abstract In terms of quality control of ambiguity estimation, the common partial ambiguity fixation algorithm is improved, and the SC-PAR (Single frequency Combined Partial Ambiguity Resolution) algorithm is proposed. After the algorithm fails to fix the full ambiguity, it filters the ambiguity subset step by step according to the number
Xizi Jia +4 more
openaire +1 more source
Calibration of Magnetometers with GNSS Receivers and Magnetometer-Aided GNSS Ambiguity Fixing
Sensors, 2017 Magnetometers provide compass information, and are widely used for navigation, orientation and alignment of objects. As magnetometers are affected by sensor biases and eventually by systematic distortions of the Earth magnetic field, a calibration is ...
Patrick Henkel
doaj +1 more source
An Interactive Fuzzy Satisficing Method for Multiobjective Stochastic Integer Programming Problems through Simple Recourse Model [PDF]
, 2009 Two major approaches to deal with randomness or impression involved in mathematical programming problems have been developed. The one is called stochastic programming, and the other is called fuzzy programming.
Karino, Atsushi +3 more
core
Journal of Marine Science and EngineeringVelocity is fundamental information for ocean engineering. It is difficult for traditional Doppler sonar to provide accurate and wide-range velocity measurement information with a short time lag.
Peng Liu +4 more
doaj +1 more source
Algebraic structures with unbounded Chern numbers
, 2016 We determine all Chern numbers of smooth complex projective varieties of dimension at least four which are determined up to finite ambiguity by the underlying smooth manifold.
Schreieder, Stefan, Tasin, Luca
core +1 more source