H. Chulani

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The “Weighted Fourier Phase Slope” (WFPS) Z-tilt estimation method is presented, that operates in the Shack-Hartmann wave-front sensor subpupil image's Fourier transform domain. It consists of two steps: first, the Fourier phase slopes at a grid of discrete spatial frequencies are directly obtained, without the intermediate step of obtaining(More)
To asses stability against 1/ f noise, the Low Frequency Instrument (LFI) on–board the Planck mission will acquire data at a rate much higher than the data rate allowed by the science telemetry bandwith of 35.5 kbps. The data are processed by an on–board pipeline, followed on– ground by a decoding and reconstruction step, to reduce the volume of data to a(More)
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