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Projecte llegit

Títol: Analysis tool for GNSS raw measurements

Estudiants que han llegit aquest projecte:

Director/a: MATEU MATEU, JORDI

Departament: TSC

Títol: Analysis tool for GNSS raw measurements

Data inici oferta: 10-02-2022     Data finalització oferta: 10-10-2022


Estudis d'assignació del projecte:
    DG ENG AERO/TELEMÀT
Tipus: Individual
 
Lloc de realització: EETAC
 
Paraules clau:
GNSS, MATLAB, RINEX, GPS, GLONASS, BDS, Galileo, Application, PVT
 
Descripció del contingut i pla d'activitats:
Projecte Erasmus Torino
 
Overview (resum en anglès):
The thesis is developed in the context of NASA and ASI¿s Lunar GNSS Receiver Experiment mission, which aims to demonstrate GNSS-based positioning, navigation, and timing on the Moon by deploying a multi-constellation Global Navigation Satellite System receiver there. The project is developed under the supervision of the NavSAS group from Politecnico di Torino.

The aim of the project is the development of an application that allows the analysis and simulation of GNSS raw measurements. The software needs to be modular, flexible, and user-friendly.

The technology used to fit the requirements of the project is MATLAB because of its user-friendly desktop environment and the embedded functions from the toolboxes. To develop the application, the integrated app builder of MATLAB named App Designer is used because it allows the creation of versatile applications with a graphical user interface.

The application contains data visualization and statistical analysis pertaining to the observables of the satellites, the position, velocity, and time solution, and the real trajectory to perform the assessment of the signal quality and positioning of the satellite vehicles.

The inputs of the application are the files related to the observables, the PVT solution, and the true trajectory. To make it as modular as feasible and avoid being constrained by a file format, these files are in a standardized MATLAB table format. The raw measurements must then be preprocessed from the GNSS receiver¿s data format to the MATLAB tables. For this reason, a MATLAB parser was built to transform mixed observation data files into standardized MATLAB tables.

In the application, there are four tabs that carry out different functionalities. The input files are loaded in the first tab. The following tab is to generate plots related to data visualization. The next tab is to generate statistics related to the input files and plots associated to those statistics. The last tab is the simulation of the link budget model of LuGRE receivers.

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