Results 41 to 50 of about 961,733 (195)
Positioning Using IRIDIUM Satellite Signals of Opportunity in Weak Signal Environment [PDF]
Electronics, 2019 In order to get rid of the dependence of the navigation and positioning system on the global navigation satellite system (GNSS), radio, television, satellite, and other signals of opportunity (SOPs) can be used to achieve receiver positioning. The space-based SOPs based on satellites offer better coverage and availability than ground-based SOPs.
Zizhong Tan +3 more
openaire +1 more source
Transmit Optimization with Improper Gaussian Signaling for Interference Channels [PDF]
, 2013 This paper studies the achievable rates of Gaussian interference channels with additive white Gaussian noise (AWGN), when improper or circularly asymmetric complex Gaussian signaling is applied.
Guan, Yong Liang +4 more
core +1 more source
Policy windows, ambiguity and Commission entrepreneurship: explaining the relaunch of the European Union's economic reform agenda [PDF]
, 2014 This article explains the relaunch of the European Union's (EU) economic reform agenda in 2010. After repeated delays during 2009, the European Commission scaled back its initial plan for a revived social dimension and instead proposed a strengthened ...
core +1 more source
The non-integrability of the Zipoy-Voorhees metric
, 2012 The low frequency gravitational wave detectors like eLISA/NGO will give us the opportunity to test whether the supermassive compact objects lying at the centers of galaxies are indeed Kerr black holes.
A. N. Kolmogorov +6 more
core +1 more source
Mating has opposite effects on male and female sexually selected cuticular hydrocarbons [PDF]
, 2020 In Drosophila serrata flies, there is female choice for male cuticular hydrocarbon (CHC) profiles and male choice for female CHC profiles. Furthermore, both males and females can alter their CHCs: when there is more opportunity for mating, males express ...
Gershman, Susan N.
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Cramer–Rao Lower Bound for SoOp-R-Based Root-Zone Soil Moisture Remote Sensing
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020 Signals of opportunity (SoOp) reflectometry (SoOp-R) is a maturing field for geophysical remote sensing as evidenced by the growing number of airborne and spaceborne experiments.
Dylan Ray Boyd +7 more
doaj +1 more source
Passive MIMO Radar Detection with Unknown Colored Gaussian Noise
Remote Sensing, 2021 The target detection of the passive multiple-input multiple-output (MIMO) radar that is comprised of multiple illuminators of opportunity and multiple receivers is investigated in this paper.
Yongjun Liu +5 more
doaj +1 more source
The Magnetic Sensitivity of the Ba II D1 and D2 Lines of the Fraunhofer Spectrum [PDF]
, 2007 The physical interpretation of the spectral line polarization produced by the joint action of the Hanle and Zeeman effects offers a unique opportunity to obtain empirical information about hidden aspects of solar and stellar magnetism. To this end, it is
Becker W. +10 more
core +1 more source
NavigationThis paper investigates the potential of signals of opportunity for positioning using broadband low Earth orbit constellations. We developed analytical absolute and differential models based on Doppler-shift observations from multi-constellation ...
Amir Allahvirdi-Zadeh +2 more
doaj +1 more source
A signals of opportunity based cooperative navigation network [PDF]
Proceedings of the IEEE 2009 National Aerospace & Electronics Conference (NAECON), 2009 With the advent of advanced wireless standards has come the ability to address more sophisticated problems. One such issue is to provide robust navigation in challenging environments. Our approach to develop a signals of opportunity (SoOP) based cooperative navigation network that has the potential to provide improved performance and extend coverage ...
Michael A. Enright, Christopher N. Kurby
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