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Correlators ( Backend System )

Correlators ( Backend System ). ATNF Synthesis Imaging Workshop. Warwick Wilson, ATNF. *. Advantages of measuring the Cross Power Spectrum. Allows measurement of any frequency dependence in the source, e.g. spectral lines.

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Correlators ( Backend System )

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  1. Correlators( Backend System ) ATNF Synthesis Imaging Workshop Warwick Wilson, ATNF.

  2. *

  3. Advantages of measuring the Cross Power Spectrum • Allows measurement of any frequency dependence in the source, e.g. spectral lines. • Reduces the effects of frequency smearing and provides more independent measurements on the U,V plane. (MFS) • Provides an easy method of delay calibration. • Interference excision.

  4. Visibility / Cross Power Cross Power Spectrum -- Cross Correlation Function

  5. 01 00 10 11 V=0

  6. Bits Levels Efficiency 1 2 0.64 2 4 0.88

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