Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Brad R. Jackson"'
Autor:
Brad R. Jackson
Publikováno v:
IEEE Access, Vol 10, Pp 11909-11923 (2022)
This paper focuses on direction of arrival (DoA) estimation using adaptive arrays that consist of radiation pattern reconfigurable antenna (RPRA) elements for 2D direction finding (i.e., azimuth and elevation DoA estimation). In particular, uniform c
Externí odkaz:
https://doaj.org/article/d6728a76805c409e85c865bbce1ee433
Autor:
Hareth Abdalkarim, Brad R. Jackson
Publikováno v:
2022 United States National Committee of URSI National Radio Science Meeting (USNC-URSI NRSM).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::66fda49d39e1f12f60574cd9a2856694
https://doi.org/10.23919/usnc-ursinrsm57467.2022.9881409
https://doi.org/10.23919/usnc-ursinrsm57467.2022.9881409
Autor:
Ionatana Sipili, Brad R. Jackson
Publikováno v:
2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting.
The design, simulation, fabrication, and measurement of a proximity-fed circularly polarized microstrip antenna is presented. The two major design components are (1) a stepped impedance open stub (SIOS) coupled-line 90° phase shifter, and (2) a dual
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5392d32904cbed5dee484b2bd44b611
https://doi.org/10.1109/ieeeconf35879.2020.9329498
https://doi.org/10.1109/ieeeconf35879.2020.9329498
Autor:
Brad R. Jackson, Stephen J. Boyes
Publikováno v:
IEEE Antennas and Wireless Propagation Letters. 16:2090-2093
A radiation pattern-agile antenna capable of generating omnidirectional, unidirectional, and bidirectional patterns is presented. The proposed design demonstrates a new technique for achieving pattern configurability with downtilt by using dual plana
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7695f500a4191c82557233a419e36395
https://doi.org/10.1109/lawp.2017.2696821
https://doi.org/10.1109/lawp.2017.2696821
Publikováno v:
IEEE Transactions on Antennas and Propagation. 63:736-747
The effect of directional antenna elements in uniform circular arrays (UCAs) for direction of arrival (DOA) estimation is studied in this paper. While the vast majority of previous work assumes isotropic antenna elements or omnidirectional dipoles, t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5627205bb4f6ba53cdf7139986feeb9f
https://doi.org/10.1109/tap.2014.2384044
https://doi.org/10.1109/tap.2014.2384044
Autor:
Brad R. Jackson
Publikováno v:
2016 USNC-URSI Radio Science Meeting.
A broadband direction finding (DF) array is presented in this work using low-profile slot spiral antennas. Often, DF systems use omnidirectional dipole or monopole antenna elements which can result in a limited bandwidth and an obvious visual signatu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e8e6b978a886f434e91f7aec38d2ad1
https://doi.org/10.1109/usnc-ursi.2016.7588516
https://doi.org/10.1109/usnc-ursi.2016.7588516
Publikováno v:
MILCOM
A probable region (PR) for the location of an emitter is useful for quantifying the reliability of a location estimate and for defining a search region. Previous investigations have yielded equations that define PRs having the form of error or uncert
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e77c49304139bcf465dee93d7c1829a
https://doi.org/10.1109/milcom.2015.7357446
https://doi.org/10.1109/milcom.2015.7357446
Autor:
Brad R. Jackson, Bruce Liao
Publikováno v:
2015 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting.
This paper presents the design, simulation, and measurement results of a 4-element uniform circular array (UCA) using dipole antenna elements with integrated microstrip tapered baluns to convert between balanced and unbalanced signals. These baluns a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d30e3fecc281794c40f24523e74658c
https://doi.org/10.1109/aps.2015.7304500
https://doi.org/10.1109/aps.2015.7304500
Publikováno v:
MILCOM
Batch-mode maximum likelihood (ML) received signal strength (RSS) emitter geolocation algorithms produce location estimates from a block of data collected over an observation period using either a single sensor or collected at one time instant by mul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2225c6232ccaa8c96af3a13088c6095e
https://doi.org/10.1109/milcom.2013.21
https://doi.org/10.1109/milcom.2013.21
Publikováno v:
CCECE
Air platforms can localize an emitter in 3-dimensions, by measuring the incident signal's angle-of-arrival (AOA). The resulting localization equations are nonlinear, since they contain arctangent functions of azimuth and elevation and can be computat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63add0f896be89df28052b4341b082b0
https://doi.org/10.1109/ccece.2013.6567733
https://doi.org/10.1109/ccece.2013.6567733