Table of contents
Combined revision comparison
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Now K-band closed loop fringe phase is much improved throughout the scan (fringe_09h15m_K_noDeltaRate.pdf with as-is ASC poly, fringe_09h15m_K_withDeltaRate.pdf with user-specified added residual '-r 2.4886e-06') and C-band has fringes too (fringe_09h15m_C_withDeltaRate.pdf). AIPS FRING solint=1;solsub=0.5 results in SNR>50 with a nanohertz rate residual that has a linear trend over the scan. With these solutions and a solint=2 fit the SNR is around 80.
Structure in fringe phase vs time (HOPS) and rate over time (AIPS) shows that the ASC poly set is indeed the initial poly set and needs iterative refinement, but currently it is unclear how to best to this. PIMA can fit delay, rate, acceleration, but: a) how to segment a scan into 60s pieces? b) how to fit higher-order terms?
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Version from 13:51, 16 May 2019
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Version as of 14:21, 16 May 2019
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Now K-band closed loop fringe phase is much improved throughout the scan (fringe_09h15m_K_noDeltaRate.pdf with as-is ASC poly, fringe_09h15m_K_withDeltaRate.pdf with user-specified added residual '-r 2.4886e-06') and C-band has fringes too (fringe_09h15m_C_withDeltaRate.pdf). AIPS FRING solint=1;solsub=0.5 results in SNR>50 with a nanohertz rate residual that has a linear trend over the scan. With these solutions and a solint=2 fit the SNR is around 80.
Structure in fringe phase vs time (HOPS) and rate over time (AIPS) shows that the ASC poly set is indeed the initial poly set and needs iterative refinement, but currently it is unclear how to best to this. PIMA can fit delay, rate, acceleration, but: a) how to segment a scan into 60s pieces? b) how to fit higher-order terms?
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