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development:gnss_calibration
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development:gnss_calibration [2020/12/15 03:43] Tiege McCarthy |
development:gnss_calibration [2021/01/20 22:39] Tiege McCarthy |
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| **Dec 11, 2020:**: | **Dec 11, 2020:**: | ||
| - | * Remote track on GPS IIRM-8 - fixed a few issues with the observing setup. First issue was time stamps in the shell wrapper not working on newsmerd - the date command was for some reason reading them as GMT+7 timezone despite the default output of date being in UTC. This has since been fixed. (Tiege) | + | * **Remote track on GPS IIRM-8:** fixed a few issues with the observing setup. First issue was time stamps in the shell wrapper not working on newsmerd - the date command was for some reason reading them as GMT+7 timezone despite the default output of date being in UTC. This has since been fixed. (Tiege) |
| * Also fixed a bug in the recording script that occasionally caused a type error when writing out the data with numpy.savetxt(). (Tiege) | * Also fixed a bug in the recording script that occasionally caused a type error when writing out the data with numpy.savetxt(). (Tiege) | ||
| * Wrote a script for doing manual (not scheduled) recording using the spectrum analyser - will be useful for when we need to calibration scans on quasars. (Tiege) | * Wrote a script for doing manual (not scheduled) recording using the spectrum analyser - will be useful for when we need to calibration scans on quasars. (Tiege) | ||
| **Dec 15, 2020:**: | **Dec 15, 2020:**: | ||
| - | * I have written a rough guide outlining the steps required in order to undertake the GNSS tracks and recording which currently exists on my google drive ([https://docs.google.com/document/d/1ZQYY4cJqCG02h52L18jyCAuboBhCwgeG2JhKxVYTsHk/edit?usp=sharing here]) | + | * **Draft observing guide:** I have written a rough guide outlining the steps required in order to undertake the GNSS tracks and recording which currently exists [[https://docs.google.com/document/d/1ZQYY4cJqCG02h52L18jyCAuboBhCwgeG2JhKxVYTsHk/edit?usp=sharing|on my google drive]] (Tiege) |
| + | **Jan 21, 2021:**: | ||
| + | * **GPS050 tracks:** Finally have a run not being cancelled by weather. Running a full track of GPS050 today (and hopefully tomorrow pending weather) - trying a 2 degree offset on offsource scans as 1 degree was too little in our last run with valid data. Also trying some new spectrum analyzer settings - keeping RBW at 3 MHz and VBW at 10 MHz, but changing span to 999 MHz and sweep points to 333, this should remove the need to resample the data when reducing the data - should know by tomorrow. Ideally we will get another couple of tracks on this source next week to check experiment to experiment repeatability of the results. | ||
| + | * **Flux calibration** Assuming wind remains pleasant, will get some data on a couple of bright quasar sources - 1934-638 is a little too weak for our setup. Would also be good to get multiple sources so we can check SEFD estimations. (Tiege) | ||
| **TO DO**: | **TO DO**: | ||
/home/www/auscope/opswiki/data/pages/development/gnss_calibration.txt · Last modified: 2021/01/25 00:42 by Tiege McCarthy
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