Yebes 40 m radio telescope and the broad band Nanocosmos receivers at 7 mm and 3 mm for line surveys
Context. Yebes 40 m radio telescope is the main and largest observing instrument at Yebes
Observatory and is devoted to very long baseline interferometry (VLBI) and single-dish …
Observatory and is devoted to very long baseline interferometry (VLBI) and single-dish …
Reflector antennas characterization and diagnostics using a single set of far-field phaseless data and crosswords-like processing
We introduce and discuss a new approach to the phase retrieval (PR) of fields radiated by
continuous aperture sources having circular support, which is of interest in many …
continuous aperture sources having circular support, which is of interest in many …
Surface deformation recovery algorithm for reflector antennas based on geometric optics
J Huang, H Jin, Q Ye, G Meng - Optics Express, 2017 - opg.optica.org
Surface deformations of large reflector antennas highly depend on elevation angle. This
paper adopted a scheme with the ability to conduct measurement at any elevation angle …
paper adopted a scheme with the ability to conduct measurement at any elevation angle …
Untrained single scanning phase retrieval neural network for surface deformation measurement of large-aperture antennas
Z Zhang, Q Ye, B Wang, N Wang, G Meng - Optics and Lasers in …, 2024 - Elsevier
Research on data-driven Fourier phase retrieval neural networks is well-established.
However, in many practical applications, such as phase retrieval-based antenna surface …
However, in many practical applications, such as phase retrieval-based antenna surface …
Learning-based surface deformation recovery for large radio telescope antennas
Z Tong, X Ren, G Meng - International Journal of Microwave and …, 2024 - cambridge.org
The surface deformation of the main reflector in a large radio telescope is closely related to
its working efficiency, which is important for some astronomical science studies. Here, we …
its working efficiency, which is important for some astronomical science studies. Here, we …
The Influence and Compensation of Microwave Holographic Measurement Errors on Antenna Measurement Accuracy
Y Zhao, B Xiang, S Lin, Y Zhang, W Wang - Applied Sciences, 2024 - mdpi.com
Microwave holographic measurement technology is a common method used in antenna
measurement. This method has high measurement efficiency and high precision. To …
measurement. This method has high measurement efficiency and high precision. To …
Phase‐Retrieval Algebraic Solution Based on Window Modulation
J Huang, H Jin, Q Ye, G Meng - Annalen der Physik, 2018 - Wiley Online Library
Phase retrieval is to recover the object amplitude and phase from the diffraction patterns.
Here, an algebraic method is presented to solve the phase retrieval problems of arbitrary 2D …
Here, an algebraic method is presented to solve the phase retrieval problems of arbitrary 2D …
A Wideband Microwave Holography Methodology for Reflector Surface Measurement of Large Radio Telescopes
Z Wang, DQ Kong, HB Zhang, XY Zhu… - … in Astronomy and …, 2022 - iopscience.iop.org
Most reflector surface holographic measurements of a large radio telescope utilize a
geostationary satellite as the signal source. The shortcoming is that those measurements …
geostationary satellite as the signal source. The shortcoming is that those measurements …
[HTML][HTML] The LLAMA Brazilian-Argentinian radiotelescope project: progress in Brazil and BRICS collaboration
JRD Lepine, Z Abraham, CGG CASTRO… - Anais da Academia …, 2021 - SciELO Brasil
We present briefly the LLAMA sub-mm radiotelescope, a joint project of Argentina and
Brazil, being mounted in the Andes, Argentina, at 4800 m altitude. Here we focus on the …
Brazil, being mounted in the Andes, Argentina, at 4800 m altitude. Here we focus on the …
Metrology of reflector antennas: A historical review
JWM Baars - URSI Radio Science Bulletin, 2020 - ieeexplore.ieee.org
The emergence of radio astronomy, space research, and satellite communication after World
War II created great activity in the design and construction of reflector antennas of increasing …
War II created great activity in the design and construction of reflector antennas of increasing …