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The Coefficients:
Frequency Response:
Computing the expected bandpass response (including aliasing and leakage effects):
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Next it computes the aliased components by shifting the frequency response +- 1 coarse channel across and summing the total power as shown in the following diagram:
Finally, the script combines ultra-fine channels together to form wider fine-channels, as done in the MWAX correlator.
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The result is the following expected bandpass response (for 10kHz fine channels):
