The project was inspired by the RNO-G experiment (Radio Neutrino Observatory in Greenland), a second-generation radio neutrino experiment currently being deployed near Summit Station, in Greenland.
The aim of this project is to achive familiarity with radio signals and discerning their properties in order to investigate properly radio sources in the detection range. In my case the field of study is my office in DESY Zeuthen, where a radio antenna like the ones in Greenland (and the ones used for the previous ARIANNA experiment) is exposed. This antenna is the receiver of the signals from sources surrounding my office. It was my interest to exploit this opportunity to get familiar with analysis of radio waveforms and their frequency spectrum. The goal is to be able to filter out narrow band features without affecting the signals of interest.
Physics motive: At summit station signals overlapping can have different sources, but the interesting one is the emission generated from neutrinos interacting with the naturally present ice in the field. The emission is a coherent cone-shaped electromagnetic field traking the energy and direction of the particle shower that generated it. The properties of the neutrinos carry information about extragalactic sources or UHE cosmic rays that generated them.
Two types of sources populate a frequency spectrum, broad-band sources and narrow-band sources. The formers are naturally occurrent physical phenomenas and the latters are artificial physical phenomenas. Background noise is dominated by low-frequency, typically broad-spectrum signals that reach the heighest magnitudes detected. Since the purpose of the study are high-frequency signals, those represent an obstacle for amplitude resolution reachable by the instrumentation. Therefore high-pass filters might be employed to clear the waveform from unwanted signals.