Memorias de investigación
Research Publications in journals:
Surface Accuracy Improvement of the Yebes 40 Meter Radiotelescope Using Microwave Holography
Year:2014

Research Areas
  • Engineering,
  • Telecommunications

Information
Abstract
The surface improvement of the Centro Astronómico de Yebes (CAY) 40 m radiotelescope with the use of coherent (withphase) microwave holography is shown. For this purpose, a dual channel Ku-band receiver in prime focus has been developed. It allows holography measurements with unmodulated beacons from geostationary satellites in the Clarke belt. Initial surface measurements revealed an accuracy of 485 amplitude-weighted RMS (WRMS) with respect to the best-fit paraboloid. After a few iterations of the measurement and surface adjustment cycle, the accuracy has been improved to 194 WRMS. This means an estimated aperture efficiency improvement from 2.6% to 38.2% at 86 GHz for a prime-focus receiver with an illumination equal to the one produced by the holography receiver test feed.
International
Si
JCR
Si
Title
Ieee Transactions on Antennas And Propagation
ISBN
0018-926X
Impact factor JCR
2,459
Impact info
Volume
62
Journal number
5
From page
2624
To page
2633
Month
MAYO
Ranking
Participants
  • Autor: Jose Antonio Lopez Perez UPM
  • Autor: PABLO DE VICENTE ABAD
  • Autor: JOSE A. LOPEZ FERNANDEZ
  • Autor: FELIX TERCERO MARTINEZ
  • Autor: Alberto Barcia Cancio
  • Autor: Belen Galocha Iraguen UPM

Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Grupo de Radiación
  • Departamento: Señales, Sistemas y Radiocomunicaciones