FFTS based RFI monitoring for Onsala Space Observatory

Typ
Examensarbete för masterexamen
Master Thesis
Program
Publicerad
2010
Författare
Qureshi, Rayyan Ali
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
The quality of radio astronomical scientific data can be greatly affected by radio frequency interference (RFI). With the increasing demand for wireless communications, the RFI environment is becoming more and more hostile and as a result, radio astronomical signals are becoming more susceptible to man-made disturbances. It is therefore necessary to find solutions by which RFI in an astronomical signal can be determined and successfully mitigated so that the underlying information can be preserved. For this purpose a software application has been developed in this thesis which can be used to successfully identify RFI in an astronomical signal. This application utilizes a signal processing device called Interconnect Break-out-Board (iBOB) for providing real time power spectral density (PSD) estimates with 2048 (4096 real samples per spectrum) frequency channels of the captured signal. The Spectral Kurtosis Algorithm has been implemented in MATLAB for the analysis of the data captured by the iBOB. This algorithm utilizes the PSD estimates for the calculation and flagging of RFI.
Beskrivning
Ämne/nyckelord
Fysik , Physical Sciences
Citation
Arkitekt (konstruktör)
Geografisk plats
Byggnad (typ)
Byggår
Modelltyp
Skala
Teknik / material
Index