The paper is concerned with deciphering the data format of a gpsOneXTRA binary file for A-GPS web-service. We consider mandatory data content of the file and reveal the changes of this content at different moments of time. The frequency of the changes hints on the location of records for current GPS date and satellite orbits information. Comparing the repeating data patterns against reference orbits information, we obtain meaning of data fields of the orbit record for each operational satellite. The deciphered file header and GPS almanac data layout are provided as tables within the paper.
1st International Conference on Electrical Engineering and Technologies (ElectriTek 2020)
Congress
International Congress on Engineering Technologies (EngiTek 2020), 16-18 June 2020, Irbid, Jordan
Pages
49-60
Topics
Cryptography and Data Security Big Data Security, Privacy and Trust
ISSN
2227-331X
DOI
BibTeX
@inproceedings{1105EngiTek2020,
title={The partial disclosure of gpsOne file format for assisted GPS service},
author={ Vladimir Vinnikov, and Ekaterina Pshehotskaya},
booktitle={International Congress on Engineering Technologies (EngiTek 2020)},
year={2020},
pages={49-60},
doi={}},
organization={Mosharaka for Research and Studies}
}
