It is with great pride and heartfelt joy that I announce the successful public defence of Mr. Panagiotis Argyrakis’ PhD thesis, titled: "Signal and Data Processing, Time Series Analysis of Permanent and Portable GNSS Stations, and Multipath Effect with Application to Geosciences."

This extraordinary research explored cutting-edge methodologies in GNSS data processing, with significant contributions to understanding seismic phenomena and geosciences. Mr. Argyrakis’ work has already led to notable academic publications and applications, exemplifying the rigor and innovation characteristic of top-tier doctoral research.

As his supervisor at the Department of Informatics and Telecommunications, University of the Peloponnese, Greece, I had the privilege of witnessing Mr. Argyrakis’ journey of intellectual growth and dedication to his field. I am immensely proud of his achievements and the impact his work has already made.

The advisory committee, composed of Prof. George Tsoulos, Dr. Athanasios Ganas, and myself, guided and supported Mr. Argyrakis throughout this journey. Today, the 7-member examination committee (Nikolaos Sagias, George TsoulosAthanasios Ganas, John Moscholios, George Glentis, Petros Bithas, Ioannis Dokas) unanimously graded his thesis as Excellent, recognizing the depth and breadth of his contributions.

I extend my sincerest gratitude to all members of the examination and advisory committees for their invaluable insights and support.

Finally, I offer my heartfelt congratulations to Mr. Panagiotis Argyrakis. His hard work and excellence serve as an inspiration to his peers and the academic community. I am confident that he will continue to achieve great things in his future endeavors.

Let us all join in celebrating this remarkable achievement!

University of Peloponnese
Digital Communications and Systems Lab:
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