Characterizing Interference in Radio Astronomy Observations through Active and Unsupervised Learning
نویسندگان
چکیده
I would like to thank my mentor Kiri Wagstaff, co-mentor David Thompson, and the rest of the Machine Learning and Instrument Autonomy group for an excellent internship experience during Summer 2012. I would also like to thank the radio astronomers at JPL,
منابع مشابه
High-Dimensional Unsupervised Active Learning Method
In this work, a hierarchical ensemble of projected clustering algorithm for high-dimensional data is proposed. The basic concept of the algorithm is based on the active learning method (ALM) which is a fuzzy learning scheme, inspired by some behavioral features of human brain functionality. High-dimensional unsupervised active learning method (HUALM) is a clustering algorithm which blurs the da...
متن کاملRFI Mitigation/Excision techniques
Radio frequency interference (RFI) is increasingly affecting radio astronomy research. A few years ago, active research to investigate the possibility of observing in the presence of interference using RFI mitigation techniques was initiated. In this paper, I briefly discuss four RFI mitigation/excision projects. These projects are: (1) A technique to suppress double sideband amplitude modulate...
متن کاملThe Coexistance of Cognitive Radio and Radio Astronomy
An increase of the efficiency of spectrum usage requires the development of new communication techniques. Cognitive radio may be one of those new technique, which uses unoccupied frequency bands for communications. This will lead to more power in the bands and therefore an increasing level of Radio Frequency Interference (RFI), which would cause loss of operation particularly for passive users ...
متن کاملIntroduction to Interference Mitigation Techniques in Radio Astronomy
Radio-astronomical observations are increasingly corrupted by RF interference. Online detection and filtering algorithms are becoming essential. To facilitate the introduction of such techniques into radio astronomy, we formulate the astronomical problem in an array signal processing language, and give an introduction to some elementary algorithms from that field. We consider two topics in deta...
متن کاملL’électromagnétisme, 150-1 Une Science En Pleine Action
Radio astronomy is a passive service and is equipped to observe extremely weak signals from outer space. The sensitivity of current state-of-the-art telescopes is over ten orders of magnitude higher than in most communications systems. Although radio telescopes are best located in relatively remote areas, astronomical observations may be still hampered by man-made radio frequency interference (...
متن کامل