Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Carried on the deck of the satellite maritime tracking and control ship, Yuan Wang 6, we have conducted a long-term on-ship dynamic experiment for a star sensor in the South Pacific. Motion-blurred star images of the star sensor obtained under different dynamic conditions are processed by our previously proposed region confined restoration method method, after which the SNR of the motion-blurred star images and the identification rate of the star sensor have been improved remarkably. With the attitude-correlated frames approach, the random noise aroused by the motion of the ship is reduced further. As a result, considering the accuracy and star observation length of the ship-borne star sensor, we believe reported for the first time, a three-axis attitude accuracy of better than 5 arcseconds is obtained in our on-ship experiment.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/AO.57.009589 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Multifunctional MEMS, NEMS, micro/nano-structures enabled by piezoelectric and ferroelectric effects.
Nanoscale Horiz
September 2025
Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117576, Singapore.
MEMS and NEMS increasingly integrate multiple functions within compact platforms, enabled by piezoelectric and ferroelectric materials such as PZT, BaTiO, AlN, ScAlN, PVDF, and HfZrO. These materials support devices including mechanical sensors, RF resonators for gas detection, energy harvesters, non-volatile memories such as FeRAM and FeFETs, and neuromorphic computing arrays, as well as microspeakers and microphones for compact audio interfaces. They also play a key role in reconfigurable photonic components through acousto-optic and electro-optic modulation.
View Article and Find Full Text PDFSingle-component-based multicolor emissions enabled by symmetry breaking.
Nat Commun
August 2025
Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of New Concept Sensors and Molecular Materials, Shaanxi Normal University, Xi'an, Shaanxi, PR China.
Excitation-dependent multicolor emission from a single-component system, independent of aggregation, remains a fundamental challenge due to inherent difficulties in innovative principles. Herein, we propose a molecular symmetry-breaking strategy to enrich electronic processes, enabling the molecule to exhibit excitation-dependent multicolor emissions from one chemical entity. A star-shaped molecule, 1,3,5-(4-tert-butylphenyl-o-carboranyl-4-phenyl)benzene (Ph-3CP) is designed, where spatial restriction induces inequivalence among three bulky, non-planar branches.
View Article and Find Full Text PDFProtocol for dual-optical mapping of voltage and calcium sensors in human pluripotent stem cell-derived cardiomyocytes.
STAR Protoc
August 2025
McEwen Stem Cell Institute, University Health Network, Toronto, ON, Canada; Peter Munk Cardiac Centre, University Health Network, Toronto, ON, Canada; Department of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, ON, Canada. Electronic address:
Simultaneous acquisition of fluorescent voltage and intracellular calcium signals requires spectrally distinct indicators and a high-speed imaging setup. Here, we present a protocol for the optical mapping of these key physiological parameters in human pluripotent stem cell-derived cardiomyocyte (hPSC-CM) monolayers. We describe steps for using spectrally compatible voltage and calcium sensors involving fluorescent dyes and genetically encoded sensors.
View Article and Find Full Text PDFSimulation and Implementation of the Modeling of Forklift with Tricycle in Warehouse Systems for ROS.
Sensors (Basel)
August 2025
Department of Electrical Engineering, National Kaohsiung University of Science and Technology, No. 1, University Road, Yanchao District, Kaohsiung City 82445, Taiwan.
In the age of labor shortage, increasing the throughput of warehouses is a good issue. In the recent two decades, automatic warehouses designed to reduce human labor have therefore become a very hot research topic. Tricycle forklifts being able to carry heavy goods can play important roles in automatic warehouses.
View Article and Find Full Text PDFSoft nanoparticles incorporating a benzo[]xanthene fluorophore: facile synthesis and ratiometric pH sensing.
J Mater Chem B
August 2025
Department of Chemistry, McGill University, 801 Sherbrooke St. West, Montreal, Quebec H3A 0B8, Canada.
Polymeric nanoparticles offer considerable potential in resolving key issues related to the delivery of small lipophilic pharmaceutics. However, significant challenges remain with respect to the development and application of multifunctional, easily accessible fluorescent tools for tracing the cellular uptake and trafficking of soft nanoparticles. We have evaluated a platform for this purpose utilizing the pH-responsive molecular sensor seminaphthofluorescein-C (benzo[]xanthene 'SNAFL-C'); its chemical conjugation to an asymmetric miktoarm star polymer (AB) at its hydrophobic arm terminus; and traceable polymeric nanoparticles through self-assembly of SNAFL-AB or physical encapsulation of the fluorophore.
View Article and Find Full Text PDF