Array-aided single-differenced satellite phase bias determination: Methodology and results
MetadataShow full item record
Integer ambiguity resolution at a single GNSS receiver gets feasible, if network-derived satellite phase biases (SPBs), among other corrections, are a-priori available. In this paper, the concept of array-aided between-satellite single-differenced (SD) SPB determination is introduced which is aimed to reduce the code-dominated precision of SD-SPB corrections. The underlying model is realized by giving the role of the local reference network to an array of antennas, mounted on rigid platforms, that are separated by a few meters only. A closed-form expression of the array-aided SD-SPB corrections is presented, thereby proposing a simple strategy to compute the SD- SPBs. Upon resolving double-differenced ambiguities of the array's data, the variance of the SD-SPB corrections is shown to be reduced by a factor equal to the number of antennas. This improvement in precision is also affirmed by numerical results. Experimental results demonstrate that the user's integer-recovered ambiguities converge to integers faster, upon increasing the number of antennas aiding the SD-SPB corrections. Integrated with the ionospheric corrections, the stated SD-SPB corrections carry over the precision improvement to the user's position as well.
Showing items related by title, author, creator and subject.
Khodabandeh, A.; Teunissen, Peter (2014)Single-receiver integer ambiguity resolution (IAR) is a measurement concept that makes use of network-derived non-integer satellite phase biases (SPBs), among other corrections, to recover and resolve the integer ambiguities ...
Offringa, A.; McKinley, B.; Hurley-Walker, Natasha; Briggs, F.; Wayth, Randall; Kaplan, D.; Bell, M.; Feng, L.; Neben, A.; Hughes, J.; Rhee, J.; Murphy, T.; Bhat, Ramesh; Bernardi, G.; Bowman, J.; Cappallo, R.; Corey, B.; Deshpande, A.; Emrich, David; Ewall-Wice, A.; Gaensler, B.; Goeke, R.; Greenhill, L.; Hazelton, B.; Hindson, L.; Johnston-Hollitt, M.; Jacobs, D.; Kasper, J.; Kratzenberg, E.; Lenc, E.; Lonsdale, C.; Lynch, M.; McWhirter, S.; Mitchell, D.; Morales, M.; Morgan, E.; Kudryavtseva, N.; Oberoi, D.; Ord, S.; Pindor, B.; Procopio, P.; Prabu, T.; Riding, J.; Roshi, A.; Shankar, N.; Srivani, K.; Subrahmanyan, R.; Tingay, Steven; Waterson, Mark; Webster, R.; Whitney, A.; Williams, A.; Williams, C. (2014)Astronomical wide-field imaging of interferometric radio data is computationally expensive, especially for the large data volumes created by modern non-coplanar many-element arrays. We present a new wide-field interferometric ...
Keith, M.J.; Coles, W.; Shannon, R.M.; Hobbs, G.B.; Manchester, R.N.; Bailes, M.; Bhat, Ramesh; Burke-Spolaor, S.; Champion, D.J.; Chaudhary, A.; Hotan, A.W.; Khoo, J.; Kocz, J.; Ostowski, S.; Ravi, V.; Reynolds, J.E.; Sarkissian, J.; van Straten, W.; Yardley, D.R.B. (2013)Signals from radio pulsars show a wavelength-dependent delay due to dispersion in the interstellar plasma. At a typical observing wavelength, this delay can vary by tens of microseconds on 5-yr time-scales, far in excess ...