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wg7:observations_of_gnss-satellites_on_the_hobart-ceduna_baseline [2016/11/27 22:44] Andreas Hellerschmied [To Do] |
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- | ====== Observations of GNSS-satellites on the Hobart Ceduna baseline ====== | ||
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- | A series of test observations were performed with the aim to streamline the complete process including scheduling, correlation, fringe fitting and creation of total delays and a geodetic analysis. We use VieVS for scheduling, the NASA field system for tracking, DiFX for correlation, fourfit for fringe fitting and VieVS for the analysis. A journal publication is in work. this work is led by the University of Tasmania (L. Plank, J. McCallum, J. Lovell) and Technische Universität Wien (A. Hellerschmied, J. Böhm). | ||
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- | First results were presented during the IVS GM in South Africa [[http://events.saip.org.za/getFile.py/access?contribId=55&sessionId=6&resId=0&materialId=slides&confId=56|Hellerschmied et al.]] and the VLBI WS for nera field targets in Bonn ([[http://www3.mpifr-bonn.mpg.de/div/meetings/vonft/pdf-files/talks/Hellerschmied_Bonn_2016.pdf|scheduling]], [[http://www3.mpifr-bonn.mpg.de/div/meetings/vonft/pdf-files/talks/2016_Bonn_Plank.pdf|observations]], [[http://www3.mpifr-bonn.mpg.de/div/meetings/vonft/pdf-files/talks/McCallum.WS2016.pdf|technical challenges]]). | ||
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- | <note>We have a series (6 hours) of measured delays of multiple GNSS-satellites on the Ho-Cd baseline. If interested, we are happy to share our experience and provide data for comparisons.</note> | ||
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- | ===== near field model comparison ===== | ||
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- | M. Rothacher from ETH was interested to compare the modelled delays. [[http://fourier.phys.utas.edu.au/wg7/|131a_vievs.dat]] is a file containing the theoretical delyas calculated with VieVS. Values are in seconds. Time reference is time of signal reception (UT) at station 1. The delay includes the a priori hydrostatic delay as well as the antenna axis offset which is up to 8m for the Hobart26 antenna. | ||
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- | ===== To Do ===== | ||
- | * agc on/off | ||
- | * 8 bit | ||
- | * include Ww | ||
- | * bandpass calibration | ||
- | * hardware liner-circular (quadrature hybrid) | ||
- | * calc model | ||
- | * aips output to geodetic | ||
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- | ===== Experiments ===== | ||
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