Results 141 to 150 of about 1,219,894 (381)
NASA tracking ship navigation systems [PDF]
The ship position and attitude measurement system that was installed aboard the tracking ship Vanguard is described. An overview of the entire system is given along with a description of how precise time and frequency is utilized.
Mckenna, J. J.
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Advanced Photonics Research, EarlyView.Self‐mixing interferometry is a powerful technique that brings together the exceptional sensitivity of phase measurements with the unequalled simplicity of the self‐mix configuration based on modulation of the cavity field induced by the return from the target. According to the selected measurand, displacement or vibration, and to the analog of digital
Silvano Donati
wiley +1 more source
OSIRIS4CubeSat—The World’s Smallest Commercially Available Laser Communication Terminal
AerospaceThe New Space movement led to an exponential increase in the number of the smallest satellites in orbit in the last two decades. The number of required communication channels increased with that as well and revealed the limitations of classical radio ...
Benjamin Rödiger +5 more
doaj +1 more source
NORAD TLE TYPE ORBIT DETERMINATION OF LEO SATELLITES USING GPS NAVIGATION SOLUTIONS [PDF]
, 2002 Chang-Hwa Cho +4 more
openalex +1 more source
Range filtering for sequential GPS receivers with external sensor augmentation [PDF]
The filtering of the satellite range and range-rate measurements from single channel sequential Global Positioning System receivers is usually done with an extended Kalman filter which has state variables defined in terms of an orthogonal navigation ...
Paielli, Russell
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TUGS: I feel what you see [PDF]
, 2005 This article identifies how navigation aids can assist a wide range of visually impaired individuals, particularly focussing on the currently available GPS (Global Positioning Satellite) linked mobile technology systems.
Gustafson-Pearce, O
core
Formation Control of Multi‐Agent System with Local Interaction and Artificial Potential Field
Advanced Robotics Research, EarlyView.This article proposes a local interaction‐based formation control method for Multi‐Agent system, integrating consensus and leader‐follower strategies with a stress response mechanism—artificial potential field to reduce communication overhead and enable obstacle avoidance. Experimental results on triangular, square, and hexagonal formations confirm its
Luoyin Zhao +3 more
wiley +1 more source
Human Performance Analysis of Processes for Retrieving Beidou Satellite Navigation System During Breakdown. [PDF]
Front Psychol, 2020 Wu M +5 more
europepmc +1 more source
Study of the global positioning system for maritime concepts/applications: Study of the feasibility of replacing maritime shipborne navigation systems with NAVSTAR [PDF]
A geostationary reference satellite (REFSAT) that broadcasts every four seconds updated GPS satellite coordinates was developed. This procedure reduces the complexity of the GPS receiver.
Huston, W., Winn, C. B.
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Advanced Science, EarlyView.Polyvinyl chloride (PVC) nanoplastics (NPs) are shown to aggravate allergic airway inflammation in asthma by triggering R‐loop accumulation and activating the cGAS‐STING pathway in macrophages. This study reveals a novel immunotoxic mechanism linking environmental plastic exposure to asthma pathogenesis and highlights potential molecular targets for ...
Qimei Bao +16 more
wiley +1 more source