MMA Memo #181

Notes on Possible Sensors for Improving the Pointing of MMA Antennas

J. M. Payne [1]

August 21, 1997

Keywords: antennas, pointing, laser ranging

This note is concerned with sensors that may be of use in sensing the various deformations in the MMA antennas that result in pointing changes. There are a variety of sensors that may be useful and we have experience with many of these. Our experience is confined to sensors using propagation of a light beam through a turbulent atmosphere and it is the turbulence that invariably imposes the limitation on the accuracy of measurement. We have many experimental results, albeit at greater ranges than would be required for the MMA antennas, but the strong suggestion is that the application of various simple sensors may improve the MMA antenna pointing.

[1] NRAO

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Last modified: 09 December, 1999