Vlbi Fe



Omnisys has developed a commercial VLBI2010 Front-End based on the 2-14 Gigahertz Eleven feed. Onsala Space Observatory and Gapwaves AB supported Omnisys in the development.

Geodetic Very Long Baseline Interferometry, VLBI, is a technique where a global network of antennas measures the earth position referenced to a celestial reference frame formed by extragalactic radio sources. VLBI can reference the earth orientation, rotation and movements of tectonic plates with a great precision. The Front-End that Omnisys has developed is a sophisticated cryostat compliant with the VLBI2010 criteria. The first Front-Ends were delivered to the Geodetic Observatory Wettzell in Germany  and to The Geospatial Information Authority of Japan, GSI, in  Japan during August and September 2014.


  • VLBI2010 compliant
  • Fully integrated cold head
  • Based on Eleven feed, developed by professor Per-Simon Kildal at Chalmers Uiversity
  • Cryogenic Low Noise Amplifiers, LNAs (cooled to 20 K)
  • Active temperature regulation


The Front-Ends enables the performance of the global system of VLBI telescopes.

  • 1 mm measurement accuracy on global baselines
  • Continuous measurements for time series of station positions and Earth orientation parameters
  • Turnaround time to initial geodetic results of less than 24 hours
  • The Omnisys front-end consists of a cryostat with integrated cold head, an Eleven feed, cryogenic LNAs (cooled to 20 K) and active temperature regulation


For more information about our partners in this project, please visit their respective websites:

Onsala Space Observatory website

Gapwaves AB website