Table of contents
Combined revision comparison
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Delay polynomialspolynomial
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DiFX calcif2 divides the day (sec 0...86399) into fixed intervals. The intervals start from second 0 of the day. In non-RA DiFX Trunk the length of each interval is 120 seconds. VEX scan start times do not affect the placement of the polynomial intervals. In other words, polynomials are valid in 2-minute intervals, and these are not necessary aligned with the VEX scans.
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The current set of files (without documentation) would suggest that if RA-DiFX produces 1-minute intervals as seen in RA_C_COH.txt, then the 6 polynomial coefficients can simply be summed element-wise to those in the .im file.
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Version from 16:50, 7 Jan 2019
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Delay polynomial
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Version as of 17:16, 7 Jan 2019
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Delay polynomials
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DiFX calcif2 divides the day (sec 0...86399) into fixed intervals. The intervals start from second 0 of the day. In non-RA DiFX Trunk the length of each interval is 120 seconds. VEX scan start times do not affect the placement of the polynomial intervals. In other words, polynomials are valid in 2-minute intervals, and these are not necessary aligned with the VEX scans.
...
The current set of files (without documentation) would suggest that if RA-DiFX produces 1-minute intervals as seen in RA_C_COH.txt, then the 6 polynomial coefficients can simply be summed element-wise to those in the .im file.
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