Spectral detector for interference time blanking using quantized correlator
| العنوان: | Spectral detector for interference time blanking using quantized correlator |
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| المؤلفون: | Christian Faye, Rodolphe Weber, J. Dansou, F. Biraud |
| المصدر: | Astronomy and Astrophysics Supplement Series. 126:161-167 |
| بيانات النشر: | EDP Sciences, 1997. |
| سنة النشر: | 1997 |
| مصطلحات موضوعية: | Physics, business.industry, Detector, General Physics and Astronomy, Spectral density estimation, Astrophysics, Interference (wave propagation), Spectral line, Quantization (physics), Optics, A priori and a posteriori, business, Algorithm, Blanking, Radio astronomy |
| الوصف: | Given the large flow of data to be processed, quantized correlators are widely used in radio astronomy. Unfortunately, the occurrence of non-Gaussian interference combined with a coarse quantization can strongly alter the shape of the estimated spectra. The final spectral estimation can be preserved by blanking the correlator in real-time. A new interference detection criterion is proposed within this framework. It uses the real-time capabilities of correlators and compares contaminated and non-contaminated correlation functions. No a priori information on the interfering signals is required. Simulations, using synthetic and actual data, are presented. This new technique of real time detection can significantly improve the quality of spectral line observations. |
| تدمد: | 1286-4846 0365-0138 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::3f90fa62dd20a1fdb411ab7beeb8b620Test https://doi.org/10.1051/aas:1997257Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi...........3f90fa62dd20a1fdb411ab7beeb8b620 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 12864846 03650138 |
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