Results 21 to 30 of about 337,357 (338)

Passive Radar Imaging of Ship Targets With GNSS Signals of Opportunity

open access: yesIEEE Transactions on Geoscience and Remote Sensing, 2021
This article explores the possibility to exploit global navigation satellite systems (GNSS) signals to obtain radar imagery of ships. This is a new application area for the GNSS remote sensing, which adds to a rich line of research about the alternative ...
D. Pastina   +4 more
semanticscholar   +1 more source

A Satellite Synthetic Aperture Radar Concept Using P-Band Signals of Opportunity

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
The spaceborne aperture radar (SAR) technique based on a combination of P-band signals of opportunity (SoOp) reflectometry with a sparse array of receivers at low earth orbits (LEOs) and transmit signals from the United States Navy's Mobile User ...
S. Yueh   +4 more
semanticscholar   +1 more source

Windows of Opportunity for Skillful Forecasts Subseasonal to Seasonal and Beyond

open access: yesBulletin of The American Meteorological Society - (BAMS), 2020
There is high demand and a growing expectation for predictions of environmental conditions that go beyond 0–14-day weather forecasts with outlooks extending to one or more seasons and beyond.
A. Mariotti   +17 more
semanticscholar   +1 more source

PRN Sequence Estimation with a Self-Calibrating 40-Element Antenna Array

open access: yesNavigation, 2023
This work explores the use of a low-cost global navigation satellite system (GNSS) antenna array including front-ends and a global navigation satellite system (GNSS) software receiver to receive signals of opportunity (SoO) whose pseudorandom noise (PRN)
Dominik Dötterböck   +4 more
doaj   +1 more source

Research Opportunity To Estimate The Energy Gain Of The Received Signal Of The Cluster DVB-T2 SFN SISO [PDF]

open access: yes, 2021
In this article, we explore the practical opportunity to estimate the energy gain of the signal, induced at the terminals of the receiving antenna, located in the service area of a cluster DVB-T2 SFN SISO.
IACOB, Mihail I., DEMCIUC, Yurie I.
core   +1 more source

LEO satellite communication and navigation symbiosis positioning management based on signal of opportunity

open access: yesDianxin kexue, 2023
Communication and navigation symbiosis refers to the coexistence of these signals in the satellite ecological environment.For single-function low-orbit satellite constellations for positioning or communication, it is difficult to quickly perform ...
Jie SHEN   +6 more
doaj   +2 more sources

A Design of Differential-Low Earth Orbit Opportunistically Enhanced GNSS (D-LoeGNSS) Navigation Framework

open access: yesRemote Sensing, 2023
Considering the problem of GNSS service interruption caused by the insufficient number of available satellites in complex environments, Low Earth Orbit (LEO) satellites can supplement GNSS effectively.
Muyuan Jiang   +4 more
doaj   +1 more source

S1P signaling: new therapies and opportunities [PDF]

open access: yesF1000Prime Reports, 2014
Development of sphingosine-1-phosphate receptor 1 (S1P1) modulators to dampen inflammation and its sequelae is becoming increasingly promising for treating medical conditions characterized by significant immunopathology. As shown by the non-selective S1P receptor modulator FTY720 (fingolimod [Gilenya(®)]) in the treatment of relapsing-remitting ...
Gonzalez-Cabrera, Pedro J.   +3 more
openaire   +2 more sources

WNT signalling: mechanisms and therapeutic opportunities [PDF]

open access: yesBritish Journal of Pharmacology, 2017
This themed section of the British Journal of Pharmacology stems from the EMBO Conference: Wnt Meeting 2016 held from the 14th to 16th September 2016 in Brno, Czech Republic.Linked ArticlesThis article is part of a themed section on WNT Signalling: Mechanisms and Therapeutic Opportunities.
Gunnar, Schulte, Vitezslav, Bryja
openaire   +2 more sources

WNT signaling in glioblastoma and therapeutic opportunities [PDF]

open access: yesLaboratory Investigation, 2016
WNTs and their downstream effectors regulate proliferation, death, and migration and cell fate decision. Deregulation of WNT signaling is associated with various cancers including GBM, which is the most malignant primary brain cancer. In this review, we will summarize the experimental evidence supporting oncogenic roles of WNT signaling in GBM and ...
Yeri, Lee   +4 more
openaire   +2 more sources

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