A scanning radiometer for the Effelsberg 100 m for VLBI atmospheric phase correction. Effelsberg observes regularly as a part of CMVA at 86 GHz. Baseline sensitivity is limited by many factors, including short coherence times due to variable atmospheric water vapour. These will be stored in a central CMVA archive and applied after correlation by the PI to make phase corrections to their data. Weather-proof housings are under construction.
System integration is underway.
System tests in Bonn require several person-months. Algorithm development for improving IWV retrieval will be open-ended. ALMA memo 352 Hills et al. NASA TMO Progress Report 42-143I Naudet et al. Money Alan Roy Last modified 13 July 2001.