Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Brady W. O'Hanlon"'
Autor:
Matthew J. Murrian, Lakshay Narula, Peter A. Iannucci, Scott Budzien, Brady W. O'Hanlon, Mark L. Psiaki, Todd E. Humphreys
Observation of terrestrial GNSS interference (jamming and spoofing) from low-earth orbit (LEO) is a uniquely effective technique for characterizing the scope, strength, and structure of interference and for estimating transmitter locations. Such deta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ac546a41e5784ac7b872ad27ff4d3c84
https://hdl.handle.net/10919/111724
https://hdl.handle.net/10919/111724
Autor:
Steven P. Powell, Kenneth F. Dymond, Andrew C. Nicholas, Charles M. Brown, Brady W. O'Hanlon, Andrew W. Stephan, Peter J. Marquis, Bruce A. Fritz, Scott A. Budzien
Publikováno v:
CubeSats and SmallSats for Remote Sensing III.
The second generation Tiny Ionospheric Photometer (TIP) is a compact, high-sensitivity, nighttime ionospheric photometer designed for small satellites. TIP launched February 19, 2017 to the International Space Station as part of the GPS Radio Occulta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6832415bec7974d1a8d26aba4329f22
https://doi.org/10.1117/12.2528791
https://doi.org/10.1117/12.2528791
Publikováno v:
Navigation. 62:1-22
A method is developed for characterizing and compensating specular GNSS multipath by considering signal amplitude and phase variations in response to antenna motion. This method seeks to improve multipath rejection capabilities. A known antenna motio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7831d506991f7416067cc3718b9f429
https://doi.org/10.1002/navi.79
https://doi.org/10.1002/navi.79
Autor:
Joanna C. Hinks, Nathan P. DeVilbiss, Katherine L. Carroll, Jon M. Anderson, Brady W. O'Hanlon, Logan Scott, Renee A. Yazdi, Joseph J. Rushanan, James T. Gillis
Publikováno v:
Proceedings of the 30th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2017).
In this paper, Chips Message Robust Authentication, or Chimera, is proposed to jointly authenticate both the navigation data and the spreading code of a GPS civilian signal. Authentication schemes protect the user community, especially critical infra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e5623ac3ea378b926c1cafb281ffd49
https://doi.org/10.33012/2017.15206
https://doi.org/10.33012/2017.15206
Publikováno v:
IEEE Transactions on Aerospace and Electronic Systems. 49:2250-2267
Cross-correlation of unknown encrypted signals between two Global Navigation Satellite System (GNSS) receivers is used for spoofing detection of publicly-known signals. This detection technique is one of the strongest known defenses against sophistic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::985a4ad3b388462a9638bae0a9186290
https://doi.org/10.1109/taes.2014.6619926
https://doi.org/10.1109/taes.2014.6619926
Publikováno v:
IEEE Transactions on Aerospace and Electronic Systems. 50:2654-2663
An algorithm is developed for determining the attitude of a spinning sounding rocket. This algorithm is able to track global positioning system (GPS) signals with intermittent availability but with enough accuracy to yield phase observables for the p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::332c5629bc2ce61c2c252c990a108fbe
https://doi.org/10.1109/taes.2014.120822
https://doi.org/10.1109/taes.2014.120822
Autor:
Steven P. Powell, Jahshan A. Bhatti, Brady W. O'Hanlon, Todd E. Humphreys, E. Glenn Lightsey, Andrew J. Joplin
Publikováno v:
Navigation. 61:53-64
A low cost, miniature, dual frequency, software defined Global Navigation Satellite System receiver was developed and flown on a sounding rocket. The receiver, known as the Fast, Orbital, TEC, Observables, and Navigation (FOTON) receiver, is intended
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b227eef399d75a62452372e7535c10b
https://doi.org/10.1002/navi.52
https://doi.org/10.1002/navi.52
Publikováno v:
Navigation. 60:267-278
A method for detecting the spoofing of civilian GPS signals has been implemented and successfully tested in a real-time system. GPS signal spoofing is an attack method whereby a third party transmits a signal that appears authentic but induces the re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b49b94bb679b4076c0af33adebb0f168
https://doi.org/10.1002/navi.44
https://doi.org/10.1002/navi.44
Publikováno v:
IEEE Journal of Selected Topics in Signal Processing. 3:707-715
A simple model is proposed for simulating equatorial transionospheric radio wave scintillation. The model can be used to test Global Positioning System phase tracking loops for scintillation robustness because it captures the scintillation properties
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd5d0a39b348248559c129ddfa577c29
https://doi.org/10.1109/jstsp.2009.2024130
https://doi.org/10.1109/jstsp.2009.2024130
Publikováno v:
Radio Science. 44
[1] On 6 December 2006, a solar radio burst associated with a class X6 solar flare demonstrated that GPS receiver operation is vulnerable to solar radio burst noise at 1.2 GHz and 1.6 GHz. Within 8 days, two more solar radio bursts confirmed the init
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3edaf287553b2bf29b9411efe18b505b
https://doi.org/10.1029/2008rs004039
https://doi.org/10.1029/2008rs004039