Zobrazeno 1 - 10
of 13
pro vyhledávání: '"James P. Conroy"'
Autor:
Pralay Raj Vaggu, Kshitija B. Deshpande, Seebany Datta-Barua, Gary S. Bust, Donald L. Hampton, Aurora López Rubio, James P. Conroy
Publikováno v:
Sensors, Vol 23, Iss 5, p 2477 (2023)
Electron density irregularities in the ionosphere modify the phase and amplitude of trans-ionospheric radio signals. We aim to characterize the spectral and morphological features of E- and F-region ionospheric irregularities likely to produce these
Externí odkaz:
https://doaj.org/article/b2cad1d587d94daca98d6919e4a3266b
A comprehensive statistical analysis was performed on Global Positioning System scintillation data acquired at high latitudes from 2014 to 2017 after separating phase scintillation events originating from refraction and/or diffraction. Events exceedi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e4a15c13923a5dc763d6d55d6a395f0e
https://hdl.handle.net/10919/111424
https://hdl.handle.net/10919/111424
Autor:
Amir I. Zaghloul, James P. Conroy, K. Deshpande, Wayne Scales, Roger H. Varney, Bharat S. R. Kunduri
Publikováno v:
Radio Science. 56
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce4395879ce0fbb271c49336296219c2
https://doi.org/10.1029/2020rs007235
https://doi.org/10.1029/2020rs007235
Publikováno v:
2018 2nd URSI Atlantic Radio Science Meeting (AT-RASC).
We have performed a sensitivity analysis using the Source-receiver Ionospheric-scintillation Global Model of the upper Atmosphere (SIGMA) multiple phase screen based forward propagation model to explore the relationship between the number of phase sc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89c5df3bc969f4bfd2926c33fe0e2eb2
https://doi.org/10.23919/ursi-at-rasc.2018.8471654
https://doi.org/10.23919/ursi-at-rasc.2018.8471654
Publikováno v:
2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS).
Radio wave scintillation can result in severe channel fading and random phase variations that can interfere with the performance of a radar, communication or GPS system. While it is well known that Ionospheric scintillation occurs within the high and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4cf063ea0461b90d4ecdba78e6e929d2
https://doi.org/10.23919/ursigass.2017.8105040
https://doi.org/10.23919/ursigass.2017.8105040
Autor:
James P. Conroy, K. Deshpande
Publikováno v:
2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS).
In this paper, we present enhancements made to the spectral modeling capabilities of the previously developed SIGMA for Ionospheric propagation. The incorporation of Shkarofsky's generalized spectrum offers the flexibility required to more effectivel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a97924d06b3df79938e3f9ea9ff2a3d2
https://doi.org/10.23919/ursigass.2017.8105119
https://doi.org/10.23919/ursigass.2017.8105119
Autor:
Amir I. Zaghloul, James P. Conroy
Publikováno v:
2015 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium).
Due to recent advancements in the development of RF receivers, digital beam forming (DBF) is now being more commonly utilized in radar and communication systems. With its potential for increased flexibility compared to its analog counterpart, DBF is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7fd8fa82c629ccd58b0723e8929cab37
https://doi.org/10.1109/usnc-ursi.2015.7303506
https://doi.org/10.1109/usnc-ursi.2015.7303506
Autor:
Dane Thompson, James P. Conroy
Publikováno v:
2014 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4abff46b75c1eec60bc9690beb955e82
https://doi.org/10.1109/usnc-ursi.2014.6955409
https://doi.org/10.1109/usnc-ursi.2014.6955409
Autor:
Steven J. Weiss, James P. Conroy
Publikováno v:
2013 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium).
Summary form only given. This paper revisits the classic Sommerfeld integral problem of determining the fields radiated from a dipole placed over a half-space. The approach to solving this problem has a wide range of applications from microstrip ante
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::561f0c03f1f7bc83bee895d14d661b24
https://doi.org/10.1109/usnc-ursi.2013.6715321
https://doi.org/10.1109/usnc-ursi.2013.6715321
Autor:
James P. Conroy, Katharine K. Fox
Publikováno v:
Chemistry and Physics of Lipids. 78:129-136
The synthesis of the nitroxide-containing dialkyl quaternary ammonium chloride 4-(N,N-dioctadecyl-N-methyl) ammonium-2,2,6,6-tetramethylpiperidine-l-oxyl, chloride, is described. This nitroxide is shown to have similar phase behaviour to dioctadecyld
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea8541a4a67e568dd30b23d16fdc7302
https://doi.org/10.1016/0009-3084(95)02490-a
https://doi.org/10.1016/0009-3084(95)02490-a