AMiBA correlator studies

Lag/lag plots

The following list describes an analysis of lag data that provides a quick diagnostic of how the correlator is performing, and explains the basis for the analysis.

• Description of analysis
• 6 lag-pair plot
• lag-1/lag-2 pair plot
• lag-1/lag-3 pair plot
• lag-1/lag-4 pair plot
• lag-2/lag-3 pair plot
• lag-2/lag-4 pair plot
• lag-3/lag-4 pair plot

Power spectrum searches for ground pickup

Ground pickup should be visible in the correlated data on a particular baseline, and could seriously distort AMiBA's results. This memo from Katy Lancaster describes how a power spectrum analysis of visibility or correlator lag data can be used to find and remove slow fringes from interferometer data. Such an analysis will be important in AMiBA tests.

Updated: 8-Jun-2006

Mark Birkinshaw