Results 51 to 60 of about 23,492 (260)
Population fusion optimization algorithm for GNSS integer ambiguity resolution based on PSO and AFSA
工程科学学报Carrier phase measurement plays a crucial role in achieving rapid and high-precision positioning within a global navigation satellite system (Global navigation satellite system, GNSS).
Yingqing GUO +5 more
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Multi-Channel SAR System Design for HRWS and GMTI in Low PRF
IEEE Access, 2020 High-resolution and wide-swath (HRWS) is an important challenge in synthetic aperture radar (SAR). Combined SAR with array, the azimuth dual-channel SAR configuration achieves high azimuth resolution and HRWS in low Pulse repetition frequency (PRF) by ...
Xuepan Zhang +3 more
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GNSS Carrier Phase Ambiguity Resolution: Challenges and Open Problems [PDF]
, 2008 Integer carrier phase ambiguity resolution is the key to fast and high-precision global navigation satellite system (GNSS) positioning and application. Although considerable progress has been made over the years in developing a proper theory for ambiguity resolution, the necessary theory is far from complete.
P.J.G Teunissen, S Verhagen
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Advanced Functional Materials, EarlyView.Lipidic nanoparticles (LNPs) were incubated with 21 gut bacteria frequently associated with the human microbiome. SAXS revealed that ∼75% of tested species induced structural transformations in monoolein LNPs, whereas phytantriol and phospholipid formulations remained unaffected.
Jonathan Caukwell +7 more
wiley +1 more source
Kinematic and reduced-dynamic precise orbit determination of low earth orbiters [PDF]
Advances in Geosciences, 2003 Various methods for kinematic and reduced-dynamic precise orbit determination (POD) of Low Earth Orbiters (LEO) were developed based on zero- and double-differencing of GPS carrier-phase measurements with and without ambiguity resolution.
D. Švehla, M. Rothacher
doaj
Constrained MLAMBDA Method for Multi-GNSS Structural Health Monitoring
Sensors, 2019 Deformation monitoring of engineering structures using the advanced Global Navigation Satellite System (GNSS) has attracted research interest due to its high-precision, constant availability and global coverage. However, GNSS application requires precise
Haiyang Li +4 more
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Resolution of the relative phase ambiguity in spectral shearing interferometry of ultrashort pulses
Optics Letters, 2010 We show that multiple-shear spectral shearing interferometry can overcome the relative phase ambiguity of disjoint spectral components that is present in single-shear approaches. By upconverting the unknown pulse with spatially chirped ancillae, we achieve a shear-to-space mapping that can be acquired on an imaging spectrometer.
Austin, DR, Witting, T, Walmsley, I
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Advanced Functional Materials, EarlyView.The nanostructure, size, and function of mRNA‐loaded lipid nanoparticles are evaluated before drying, within polymer microneedles, and after rehydration. The results reveal the polymer and LNP loadings required to recover nanostructure and preserve the delivery performance in dry‐state formulations.
Brendan P. Dyett +19 more
wiley +1 more source
Design and Characteristic Analysis of Multicarrier Chaotic Phase Coded Radar Pulse Train Signal
International Journal of Antennas and Propagation, 2014 By introducing phase code into multicarrier orthogonal frequency division multiplex signal, the multicarrier phase coded (MCPC) radar signal possesses a good spectrum utilization rate and can achieve a good combination of narrowband and wideband ...
Qiongdan Huang +3 more
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Orbital Geometry‐Governed Response of Pressure‐Tunable Quantum Defects in hBN
Advanced Functional Materials, EarlyView.Defects in hBN act as ultrasensitive quantum manometers when the energy of the intradefect optical transitions is modified by lattice compression. The orbital geometry of the electron wave functions governs how electron hopping and Coulomb interactions react uniquely to the reduction of the van der Waals gap and in‐plane compression, leading to robust ...
Magdalena Grzeszczyk +6 more
wiley +1 more source