Attendees: Richard, Darrel, Fred, Todd, Josh, Geoff, Antonio
Action Items from previous meeting
Josh will send out the NSI farfield data for the average of beam 1 and beam 2. Richard and Fred will compare them with Andrey's farfield result (which was a direct Fourier transform of the beam-combined raw nearfield data)
Fred said that his FFT of the nearfield data for scan 103 with the proper avg of beams 1 and 2 (with no padding) look essentially identical to Andrey's data.
Fred will proceed with implementing efficiency calculations in Mathematica.
Geoff will make new band 9 scans using the open-ended waveguide probe.
Recommendations from Richard made during the past week
Read the NSI manual and do a third independent FT of the scan 103 data
Josh: We got a response from NSI regarding beam averaging in their software. In most of our previous beam scans, beam 2 was +90 deg from beam 1, which is opposite of what NSI assumes in its processing. But even using scans with the correct beam order, the result does not look right--seeing an extra 20 degrees. Josh will follow up with NSI.
Fred is seeing good (but not perfect) agreement with Andrey's result if he does not correct for the half-pixel shift that should be applied due to having an even number of rows.
Geoff reported some hardware problems with the beam scanning IF system. He is just getting the receiver again today and will proceed with scans with an odd number of rows, and with/without the open-ended waveguide.