Zobrazeno 1 - 10
of 30
pro vyhledávání: '"John D. Rockway"'
Publikováno v:
2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting.
This paper presents atmospheric noise measurements as a function of depth at low-frequencies for collections performed underwater. The presented results can be used to understand the impact of atmospheric noise on underwater reception.
Publikováno v:
2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting.
This paper compares the Helmholtz Coil and Field Loop calibration techniques to calibrate air core loop antennas. Each method computes a calibration factor, which relates voltage on the loop antenna to the magnetic field received by the antenna. Resu
Autor:
John D. Rockway, Oren Sternberg, Jeffrey Jensen, Sara Wheeland, Gregory H. Huff, Kristopher Buchanan
Publikováno v:
2017 IEEE Radar Conference (RadarConf).
This work statistically examines the receiver capabilities for circularly distributed ad-hoc array topologies of independently controlled element radiators. Performance metrics observed in this study include maximum SNR, tolerance on receiver amplitu
Publikováno v:
2017 United States National Committee of URSI National Radio Science Meeting (USNC-URSI NRSM).
A uniformly distributed family of circular topology is analyzed using probabilistic methods to find mean valued radiation characteristics in the near field (Fresnel zone). Linear arrays with circular and spherical distributions of one, two and three
Publikováno v:
RWS
We present the design and development of a cochlea-based RF Channelizer which operates in the C-band (4–8 GHz). The channelizer is implemented using a transmission line approach and covers frequencies from 3–8 GHz in 5 distinct channels each with
Publikováno v:
IEEE Antennas and Wireless Propagation Letters. 13:1329-1332
Traditional impedance-matching methods typically employ matching networks at the antenna input terminals. Alternatively, the antenna may be embedded with a non-Foster load to enhance the radiation bandwidth. This method is demonstrated here with the
Publikováno v:
IEEE Antennas and Wireless Propagation Letters. 13:201-204
We present the development of a Ku-band (10-16 GHz) corrugated conical horn antenna using 3-D print technology or stereolithography. The antenna is printed using acrylonitrile butadiene styrene (ABS), a thermoplastic, and then coated with conductive
Publikováno v:
MILCOM
Passive coherent location (PCL) systems can employ a variety of terrestrial broadcast signals for target detection and ranging. Through analysis of the ambiguity function, one can determine a signal's suitability for this application. The main parame
Publikováno v:
Metamaterials, Metadevices, and Metasystems 2016.
Previous efforts to create a metamaterial lens in the microwave X band frequency range focused on the development of a device with biaxial symmetry. This allows for focusing solely along the central axis of propagation. For applications involving wav
Publikováno v:
2016 IEEE Radar Conference (RadarConf).
This work examines a variety of canonical, randomly distributed phased arrays in linear, planar, and volumetric topologies. We investigate their distributed beamforming capabilities in modern mobile autonomous systems. Sum-difference radiation patter