Results 71 to 80 of about 28,383 (303)

Architecture of the global navigation satellite system for maritime applications [PDF]

open access: yes, 2020
This paper introduces architecture of the global navigation satellite system (GNSS) networks in the function of the maritime space communications, navigation and surveillance (CNS) for enhanced navigation and positioning of vessels deploying passive ...
Ilcev, Dimov Stojce; Durban University of Technogy
core   +2 more sources

High Center‐of‐Mass, Multi‐Legged Soft Robots Powered by Geometrically Encoded Liquid Crystal Elastomer Arc Appendages

open access: yesAdvanced Materials, EarlyView.
Inspired by the octopus and the golden wheel spider, soft robots with liquid crystal elastomer arc fibers as appendages are fabricated to transcend surface constraints through an elevated center of mass and minimal contact footprints. By leveraging curvature‐encoded deformation‐recovery cycles, these robots exhibit contractile, torsional, and flexural ...
Jong Bin Kim   +5 more
wiley   +1 more source

Retrieval of sea ice thickness using global navigation satellite system reflected signals

open access: yesMeasurement + Control, 2019
The aim of this paper is to develop a model which can be used to retrieve sea ice thickness based on global navigation satellite system reflected signals at a shore-based platform.
Hongxing Gao, Dongkai Yang, Qiang Wang
doaj   +1 more source

The Current Status of Research on GNSS-R Remote Sensing Technology in China and Future Development

open access: yesLeida xuebao, 2013
Global Navigation Satellite System (GNSS), has a significant impact on all areas of human activity, not only can provide users with shared global navigation, position and timing information, but also can provide a L-band microwave signal source of long ...
Li Huang, Xia Qing, Yin Cong, Wan Wei
doaj   +1 more source

NaviSoC: High-Accuracy Low-Power GNSS SoC with an Integrated Application Processor

open access: yesSensors, 2020
A dual-frequency all-in-one Global Navigation Satellite System (GNSS) receiver with a multi-core 32-bit RISC (reduced instruction set computing) application processor was integrated and manufactured as a System-on-Chip (SoC) in a 110 nm CMOS ...
Tomasz Borejko   +11 more
doaj   +1 more source

Determination and Sensitivity Analysis of the Specular Reflection Point in GNSS Reflectometry

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
In applying Global Navigation Satellite System Reflectometry (GNSS-R) techniques for the remote sensing of surface properties of the Earth, it is imperative to determine the specular reflection point and provide a quantitative characterization of the ...
Jyh-Ching Juang
doaj   +1 more source

Concept for an Integrated PNT-Unit for Maritime Applications [PDF]

open access: yes, 2010
The provision of robust position, navigation and timing (PNT) information is a fundamental element of the e-Navigation initiative proposed by the International Maritime Organization (IMO).
Thoralf Noack   +7 more
core   +1 more source

Nocturnal Intraocular Pressure Monitoring With a Soft Contact Lens Sensor for Glaucoma Management

open access: yesAdvanced Materials, EarlyView.
A soft contact lens sensor enables continuous, noninvasive monitoring of nocturnal intraocular pressure (IOP) under closed‐eye sleep conditions. By integrating a highly compliant inductive–capacitive circuit onto a commercial lens, the device achieves record sensitivity and stable performance.
Yumin Dai   +19 more
wiley   +1 more source

Global Navigation Satellite Systems

open access: yesThe Journal of the Institute of Electrical Installation Engineers of Japan, 2011
AbstractGlobal Navigation Satellite Systems (GNSS) are satellite constellations that generate signals that can be received virtually anywhere, anytime, and in any weather anywhere in the world. The article discusses the systems that are fully active and those that are still being developed. The systems are intended to be independent, complementary, and
openaire   +2 more sources

Performances of a GNSS receiver for space-based applications [PDF]

open access: yes, 2010
Space Vehicle (SV) life span depends on its station keeping capability. Station keeping is the ability of the vehicle to maintain position and orientation. Due to external perturbations, the trajectory of the SV derives from the ideal orbit.
Boutillon, Emmanuel   +3 more
core  

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