Results 71 to 80 of about 220,608 (333)

Accuracy Analysis of GNSS (GPS, GLONASS and BEIDOU) Obsevation For Positioning [PDF]

open access: yesE3S Web of Conferences, 2019
Global Navigation Satellite System called GNSS is a term used for the entire global navigation that already operate or are in the planning for the future. Some of the satellite that can be used are GPS (Global Positioning System) operated by USA, GLONASS
Khomsin   +3 more
doaj   +1 more source

Low‐power global navigation satellite system‐enabled wireless sensor network for acoustic emission localisation in aerospace components

open access: yesStructural Control & Health Monitoring, 2020
Structural health monitoring systems for the localisation of acoustic emission (AE) events have been developed in the past few years for aircraft components. However, these systems still require complex and heavy electrical wiring for each sensing device
C. Giannì   +3 more
semanticscholar   +1 more source

Photocatalytic Water Splitting on the Lunar Surface: Prospects for In Situ Resource Utilization

open access: yesAdvanced Materials Interfaces, EarlyView.
Water has been found in craters on the moon nearby locations which are illuminated >80% of the time. Photocatalysis uses energy from sunlight to drive chemical reactions such as water splitting to produce oxygen and hydrogen. It is a scalable technology that requires lighter equipment and utilizes resources available on the moon. ABSTRACT The discovery
Ranjani Kalyan   +6 more
wiley   +1 more source

Multipath modeling and mitigation by using sparse estimation in global navigation satellite system-challenged urban vehicular environments

open access: yesInternational Journal of Advanced Robotic Systems, 2020
Multipath interference has been one of the most difficult problems when using global navigation satellite system-based vehicular navigation in urban environments.
Yue Yuan, Feng Shen, Dingjie Xu
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

A mathematical model for the atomic clock error in case of jumps

open access: yes, 2015
We extend the mathematical model based on stochastic differential equations describing the error gained by an atomic clock to the cases of anomalous behavior including jumps and an increase of instability. We prove an exact iterative solution that can be
Tavella, Patrizia, Zucca, Cristina
core   +1 more source

Use of Cyclone Global Navigation Satellite System (CyGNSS) Observations for Estimation of Soil Moisture

open access: yesGeophysical Research Letters, 2018
Using the first full annual cycle of Cyclone Global Navigation Satellite System (CyGNSS) observations, we investigated the limitations and capabilities of CyGNSS observations for soil moisture (SM) estimates (0–5 cm).
Hyunglok Kim, V. Lakshmi
semanticscholar   +1 more source

High Stability of Diketopyrrolopyrrole Polymer Transistors Under Aqueous Condition Toward Biosensing Platform

open access: yesAdvanced Materials Technologies, EarlyView.
We are reporting the first‐time investigation of DPP‐based Organic Field‐Effect Transistor (OFET) devices with high‐stability of signal response in both of ambient and aqueous conditions with PBS solution. ABSTRACT Diketopyrrolopyrrole (DPP)–based conjugated polymers show strong promise for electronic applications, including bioelectronic gas sensors ...
Chattarika Khamhanglit   +6 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

Home - About - Disclaimer - Privacy