RE: [ATM] Accuracy of Mahajan's approximation for Strehl ratio

["Koehler, Steve" <Steve_Koehler@securecomputing.com>]

Mike,

Thanks for the comparison of Marechal vs. Mahajan.  I hadn't been paying
attention, and have used Marechal in (I believe) all of my stuff.  It looks like
Mahajan does better for more than twice the RMS error than does Marechal.

Thanks, also, for mentioning calculating Strehl directly.  It's obvious, but I
had never tried that, before.

You note that Mahajan is pessimistic for larger RMS errors.  Is it possible that
your directly calculated Strehl ratio is inaccurate (optimistic?) for larger RMS
errors, because the calculation is discrete?

-- Steve Koehler
   steve_koehler@securecomputing.com

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