ALESSANDRA MARIA DE PACE PhD Student PhD program:: XXXVIII email: alessandramaria.depace@uniroma1.it building: Edificio D, area di geodesia e geomatica supervisor: Mattia Crespi Doctoral student from November-2022 at the department of Infrastructures and Transports of the university La Sapienza. The theme of my research concerns the real-time estimation of the tropospheric delay.