Zobrazeno 1 - 10
of 63
pro vyhledávání: '"William E. Nixon"'
Autor:
Guy B. DeMartinis, William E. Nixon, Andrew J. Gatesman, Christopher J. Beaudoin, Thomas M. Horgan, Michael J. Coulombe
Publikováno v:
IEEE Transactions on Antennas and Propagation. 66:937-950
We introduce the design of dihedral reflectors that are used to calibrate an instrumented, dual-linearly polarized, wide-bistatic compact radar range operating at 160 GHz. The polarization scattering matrix of this bistatic calibration object may be
Autor:
Thomas M. Goyette, William E. Nixon, Jason D. Cook, Ryan H. Wetherbee, Jason C. Dickinson, Andrew J. Gatesman
Publikováno v:
Radar Sensor Technology XXII.
Three-dimensional radar imaging is becoming increasingly important in modern warfare systems, leading to an increased need for deeper understanding of the 3D scattering behavior of targets as simple as a cylinder, to as complex as a main battle tank
Autor:
Thomas M. Goyette, William E. Nixon, Guy B. DeMartinis, Andrew J. Gatesman, Christopher J. Beaudoin, Michael J. Coulombe, Thomas M. Horgan
Publikováno v:
SPIE Proceedings.
We present a prototype bistatic compact radar range operating at 160 GHz and capable of collecting fullypolarimetric radar cross-section and electromagnetic scattering measurements in a true far-field facility. The bistatic ISAR system incorporates t
Autor:
Robert H. Giles, Thomas M. Goyette, William E. Nixon, Elizabeth J. Slingerland, Edwin G. E. Jahngen
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 112:2323-2329
Nitromethane, with its heavy frame and internal rotator, readily evaporates into the atmosphere making it an ideal candidate for remote sensing. Here we present the absorption spectra of gas-phase nitromethane between 9 and 50 cm −1 . Measurements
Publikováno v:
IEEE Journal of Quantum Electronics. 46:474-477
The frequency of four previously reported far-infrared laser lines have been measured to an accuracy of 100 kHz. These laser lines were measured using a heterodyne system which allowed for more accurate measurement. The four far-infrared laser lines
Publikováno v:
Passive and Active Millimeter-Wave Imaging XVIII.
With the demand for larger bandwidths and faster data speeds, wireless communication systems are expanding into the millimeter wave and terahertz region of the electromagnetic spectrum. Successful transition to higher frequencies, particularly for sy
Publikováno v:
Terahertz Physics, Devices, and Systems IX: Advanced Applications in Industry and Defense.
The terahertz frequency regime is often used as the ‘chemical fingerprint’ region of the electromagnetic spectrum since many molecules exhibit a dense selection of rotational and vibrational transitions. Water is a major component of the atmosphe
Publikováno v:
Terahertz Physics, Devices, and Systems IX: Advanced Applications in Industry and Defense.
In this paper the effects of subwavelength antenna resonator element dimensions on the anomalous reflection properties of metasurfaces operating in the millimeter wave and terahertz frequency regions are investigated. Such two-dimensional structures
Autor:
Thomas M. Goyette, William E. Nixon, Robert H. Giles, Elizabeth J. Slingerland, David M. Slocum
Publikováno v:
SPIE Proceedings.
Remote sensing over long path lengths has become of greater interest in the terahertz frequency region. Applications such as pollution monitoring and detection of energetic chemicals are of particular interest. Although there has been much attention
Publikováno v:
SPIE Proceedings.
As terrestrial remote sensing and communication systems continue to evolve in the 0.1 – 0.3 THz band, the need to understand the scattering behavior of common materials and ground terrain at these frequencies becomes important. Terrain features and