Results 81 to 90 of about 232 (143)

Seek and you may (not) find: A multi-institutional analysis of where research data are shared. [PDF]

PLoS One
Johnston LR, Hofelich Mohr A, Herndon J, Taylor S, Carlson JR, Ge L, Moore J, Petters J, Kozlowski W, Hudson Vitale C.   +9 more
europepmc   +1 more source

Non-traumatic osteonecrosis of the femoral head induced by steroid and alcohol exposure is associated with intestinal flora alterations and metabolomic profiles. [PDF]

J Orthop Surg Res
Zheng QY, Tao Y, Geng L, Ren P, Ni M, Zhang GQ.   +5 more
europepmc   +1 more source

Capturing biomarkers associated with Alzheimer disease subtypes using data distribution characteristics. [PDF]

Front Comput Neurosci
Smith K, Climer S.
europepmc   +1 more source

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Nostradamus: An OTH Radar

IEEE Aerospace and Electronic Systems Magazine, 2006
ONERA, funded by the French Ministry of Defence has conducted the realization and experimentations of the Doppler Skywave OTH radar called NOSTRADAMUS. One of the main characteristics of Skywave OTH radar is the dependence to the ionosphere for successful operation.
V. Bazin, J.P. Molinie, J. Munoz, P. Dorey, S. Saillant, G. Auffray, V. Rannou, M. Lesturgie   +7 more
exaly   +2 more sources

Detection Performance of MIMO-OTH Radar: Advantages of Multipath Ionospheric Propagation

2012 IEEE 12th International Conference on Computer and Information Technology, 2012
Multipath ionospheric propagation (MIP), a typical phenomenon the sky wave over-the-horizon (OTH) radar may encounter, is often viewed as an annoying factor to be eliminated in the traditional OTH radars. In this paper, we consider multiple-input multiple-output sky wave over-the-horizon (MIMO-OTH) radar with closely spaced antennas.
Qian He, Zishu He
exaly   +2 more sources

OTH radar phenomenology: signal interpretation and target characterization at HF

IEEE Aerospace and Electronic Systems Magazine, 2017
Implicitly or explicitly, the extraction of information from radar echoes is based on a physical model of the interaction between the radar system and the target, the study of which is sometimes referred to as radar phenomenology [1]. It follows that the detail and fidelity of the physical model determine the prospective observables, the accuracy of ...
Stuart Anderson
exaly   +2 more sources

Inversion of OTH radar backscatter ionograms obtained by scanning in elevation

2008 IEEE Radar Conference, 2008
A new inversion method to obtain the real state of the ionosphere with an oblique sounder is presented. This method takes some points on the backscatter ionogram obtained by scanning in elevation to estimate the parameters of the electronic density profile of the ionosphere.
E Benito
exaly   +3 more sources

Performance of OTH radar array calibration

Proceedings of the 1998 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP '98 (Cat. No.98CH36181), 2002
Array calibration algorithms for over-the-horizon (OTH) radar arrays have been proposed in the literature. These algorithms perform array calibration by using echoes from ionised meteor trails, and estimate sensor position errors and mutual coupling. We derive the Cramer-Rao performance bound for this array calibration problem and then investigate the ...
I. S. D. Solomon, Yuri I. Abramovich, Douglas A. Gray 0001, Stuart J. Anderson   +3 more
openaire   +1 more source