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3D sonar system based on mills cross antenna configuration
2014 Oceans - St. John's, 2014A special aperture for a 3D sonar system is the so called Mills Cross antenna configuration. The Mills Cross arrangement looks like a “T” in which both antennas have a special function. In our work one antenna, consisting of 128 piezoelectric transducer elements, is used to transmit sound into a volume of interest.
C. Degel +6 more
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A Brief History of the Northern Cross Radio Telescope
2023 8th IEEE History of Electrotechnology Conference (HISTELCON), 2023The Northern Cross is the first Italian large radio telescope. The original design was a “Mills' cross” type configuration, with two arms of about 1.2Km, aligned in East-West and North-South directions, operating at 408MHz.
G. Bianchi, F. Perini, G. Setti
semanticscholar +1 more source
Simulations and Experiments with a 1D Interferometric Doppler Velocity Sonar
Oceans, 2023The Interferometric DVL (InDVL) is a new instrument designed to be free from acoustic bias. The InDVL combines pulse-to-pulse phase comparison, used by all wideband Doppler sonars, with element-to-element phase comparison generally used for direction ...
Laurent Verrier +3 more
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Fundamental and applied problems of ferrous metallurgy, 2023
In the practice of manufacturing metal products, shaped profiles of a complex configuration, including thin-walled, strip and periodic cross-section profiles, play a special role.
V. Razdobreev +4 more
semanticscholar +1 more source
In the practice of manufacturing metal products, shaped profiles of a complex configuration, including thin-walled, strip and periodic cross-section profiles, play a special role.
V. Razdobreev +4 more
semanticscholar +1 more source
The International Journal of Advanced Manufacturing Technology, 2007
This paper presents a novel reverse engineering digitizing system for full part geometry, which is based on a cross-sectional imaging device built in a NC milling machine. The system successively captures a picture for each planar cross-section contour of the part by end-milling and CCD imaging, and builds the geometry for both external and internal ...
Hongbo Lan +3 more
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This paper presents a novel reverse engineering digitizing system for full part geometry, which is based on a cross-sectional imaging device built in a NC milling machine. The system successively captures a picture for each planar cross-section contour of the part by end-milling and CCD imaging, and builds the geometry for both external and internal ...
Hongbo Lan +3 more
openaire +1 more source
UHF Radar Sounding of Polar Ice Sheets
IEEE Geoscience and Remote Sensing Letters, 2020In this letter, we report on the design, development, and field operation of a surface-based multi-channel ultrawideband (UWB) ultrahigh frequency (UHF) radar to measure ice thickness, basal conditions, and ice-shelf bottom melt rates.
Jie-Bang Yan +9 more
semanticscholar +1 more source
Dynamic Metasurface Antenna-Based Mills-Cross Aperture for 3-D Computational Microwave Imaging
IEEE Antennas and Wireless Propagation LettersThis work presents a computational imaging (CI) system capable of retrieving 3-D images of the area under inspection. The system is based on the use of two linear dynamic metasurface antennas (DMAs) specifically designed and fabricated for this purpose ...
G. Álvarez-Narciandi +3 more
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Optimal MIMO array configuration for ultrawideband microwave imaging
Signal Processing and Communications Applications Conference, 2017M. B. Kocamis, F. Oktem
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A cross beam interferometer radiometer for high resolution microwave sensing
1993 IEEE Aerospace Applications Conference Digest, 1993A. Harold, ot, L. Missiles
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