Ionospheric modeling for low frequency radioastronomy
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The research presented in this thesis aims to develop ionospheric corrections for calibration of future low frequency radio interferometers. GNSS data from ground stations close to the MRO were used to produce a model of the ionosphere. Comparisons of this model with ionospheric parameters derived from the MWA observations show good agreement. The installation of new GNSS stations in the vicinity of MRO would allow ionospheric modelling with higher spatial resolution.
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Ionospheric Modelling using GPS to Calibrate the MWA. I: Comparison of First Order Ionospheric Effects between GPS Models and MWA ObservationsArora, B.; Morgan, John; Ord, S.; Tingay, Steven; Hurley-Walker, Natasha; Bell, M.; Bernardi, G.; Bhat, Ramesh; Briggs, F.; Callingham, J.; Deshpande, A.; Dwarakanath, K.; Ewall-Wice, A.; Feng, L.; For, B.; Hancock, Paul; Hazelton, B.; Hindson, L.; Jacobs, D.; Johnston-Hollitt, M.; Kapinska, A.; Kudryavtseva, N.; Lenc, E.; McKinley, B.; Mitchell, D.; Oberoi, D.; Offringa, A.; Pindor, B.; Procopio, P.; Riding, J.; Staveley-Smith, L.; Wayth, Randall; Wu, C.; Zheng, Q.; Bowman, J.; Cappallo, R.; Corey, B.; Emrich, David; Goeke, R.; Greenhill, L.; Kaplan, D.; Kasper, J.; Kratzenberg, E.; Lonsdale, C.; Lynch, Mervyn; McWhirter, S.; Morales, M.; Morgan, E.; Prabu, T.; Rogers, A.; Roshi, A.; Shankar, N.; Srivani, K.; Subrahmanyan, R.; Waterson, M.; Webster, R.; Whitney, A.; Williams, A.; Williams, A. (2015)Copyright © Astronomical Society of Australia 2015 We compare first-order (refractive) ionospheric effects seen by the MWA with the ionosphere as inferred from GPS data. The first-order ionosphere manifests itself as a ...
Arora, Balwinder Singh (2012)The precise positioning applications have long been carried out using dual frequency carrier phase and code observables from the Global Positioning System (GPS). The carrier phase observables are very precise in comparison ...
Ionosphere Augmentation for Accelerated Convergence in Precise Point Positioning with Triple-frequency and GPSDeo, Manoj; El-Mowafy, Ahmed (2017)A Precise Point Positioning (PPP) method is presented that uses raw triple-frequency GPS measurements augmented with a regional ionospheric model (RIM) for faster solution convergence. The proposed method has two ...