Title: FAST AND PRECISE POSITIONING USING MAFA METHOD AND NEW GPS AND GALILEO SIGNALS |
Authors: Cellmer Slawomir, Paziewski Jacek and Wielgosz Pawel |
DOI: 10.13168/AGG.2013.0038 |
Journal: Acta Geodynamica et Geomaterialia, Vol. 10, No. 4 (172), Prague 2013 |
Full Text: PDF file (0.6 MB) |
Keywords: GNSS data processing, Ambiguity Function, MAFA method |
Abstract: The paper presents the foundations of MAFA method, as well as its application to the processing of new GPS and Galileo
signals. The presented numerical tests have been carried out on the basis of data obtained from a hardware GNSS signal
simulator as there are currently too few Galileo satellites on orbit. In the proposed methodology, first linear combinations
have been formed using new GNSS signals. These linear combinations constitute a data set for a cascade adjustment
algorithm employing extended MAFA method. Feasibility of a single-epoch precise positioning has been tested. The singleepoch
positioning is particularly important for reliable real-time landslide and deformation monitoring. The obtained test
results show a high success rate of the extended MAFA method. The number of the correct single-epoch solutions varied from
85 % to over 99 % depending on the baseline length and accuracy of an a priori position. Thus, the MAFA method may be
successfully used with new GPS and Galileo signals, even for the processing of single-epoch data. |