Table of contents
Combined revision comparison
...
20May2019 Compared uvw coordinates in AIPS UVPLT (ASC reference FITS, DiFX FITS where ASC uvw poly data ignored and CALC9 retained i.e. directly from ephemerides). The uvw coordinates do NOT match. Time against uv-dist overlaps nicely. However, coordinates are of opposite track direction / from the conjugate position.; time against u
20May2019 Implemented loading of PIMA-fitted residuals for rate and acceleration (1st, 2nd order). Resulted in an improvement in SNR~11 to SNR~24 in 600ss. The HOPS fringe plot shows that not all of the phase wander could be compensated. Might have to find a way to fit the higher-order terms (jerk/3rd, 4th, 5th) that ASC a priori polynomials do contain-coordinate does not overlap but rather "crosses" midway in the scan, likewise for time against v-coordinate.
...
Version from 10:12, 20 May 2019
...
20May2019 Compared uvw coordinates in AIPS UVPLT (ASC reference FITS, DiFX FITS where ASC uvw poly data ignored and CALC9 retained i.e. directly from ephemerides). The uvw coordinates do NOT match. Time against uv-dist overlaps nicely. However, coordinates are of opposite track direction; time against u-coordinate does not overlap but rather "crosses" midway in the scan, likewise for time against v-coordinate.
...
Version as of 15:17, 20 May 2019
...
20May2019 Compared uvw coordinates in AIPS UVPLT (ASC reference FITS, DiFX FITS where ASC uvw poly data ignored and CALC9 retained i.e. directly from ephemerides). The uvw coordinates do NOT match. Time against uv-dist overlaps nicely. However, coordinates are of opposite track direction / from the conjugate position.
20May2019 Implemented loading of PIMA-fitted residuals for rate and acceleration (1st, 2nd order). Resulted in an improvement in SNR~11 to SNR~24 in 600ss. The HOPS fringe plot shows that not all of the phase wander could be compensated. Might have to find a way to fit the higher-order terms (jerk/3rd, 4th, 5th) that ASC a priori polynomials do contain.
...
