RFI mitigation in the context of Pulsar coherent de-dispersion at Nancay radio astronomical Observatory
نویسندگان
چکیده
Radio astronomical pulsar observations require specific instrumentation and dedicated signal processing to cope with the dispersion caused by the interstellar medium. Moreover, the quality of observations can be limited by radio frequency interferences (RFI) generated by Telecommunications activity. This paper will present the innovative pulsar instrumentation based on Graphical Processing Units (GPU) which has been designed at the Nançay Radio Astronomical Observatory. In addition, first simulated results on RFI cyclostationary detectors, which will be implemented on the system, will be described and discussed.
منابع مشابه
Blind detection of giant pulses: GPU implementation
Radio astronomical pulsar observations require specific instrumentation and dedicated signal processing to cope with the dispersion caused by the interstellar medium. Moreover, the quality of observations can be limited by radio frequency interferences (RFI) generated by Telecommunications activity. This paper will present the innovative pulsar instrumentation based on Graphical Processing Unit...
متن کاملAdaptive Filters Revisited - RFI Mitigation in Pulsar Observations
1 Pulsar detection and timing experiments are applications where adaptive filters seem eminently suitable tools for radio-frequency-interference (RFI) mitigation. We describe a novel variant which works well in field trials of pulsar observations centred on an observing frequency of 675 MHz, a bandwidth of 64 MHz and with 2-bit sampling. Adaptive filters have generally received bad press for RF...
متن کاملRFI Mitigation for Pulsar Observations
An adaptive filter for RFI mitigation has been brought on-line at the Parkes observatory, embedded in the most recent pulsar observing system. The filter meets the design criteria, and provides substantial RFI mitigation. This note describes the filter and some recent field trials.
متن کاملExascale Real-Time Radio Frequency Interference Mitigation
Radio Frequency Interference (RFI) mitigation is extremely important to take advantage of the vastly improved bandwidth, sensitivity, and field-of-view of exascale telescopes. For current instruments, RFI mitigation is typically done offline, and in some cases (partially) manually. At the same time, it is clear that due to the high bandwidth requirements, RFI mitigation will have to be done aut...
متن کاملAn Experimental Setup to Develop Rfi Mitigation Techniques for Radio Astronomy
Increasing levels of Radio Frequency Interference (RFI) are a problem for research in radio astronomy. Various techniques to suppress RFI and extract astronomical signals from data affected by interference are being tried out. However, extracting weak astronomical signals in the spectral region affected by RFI remains a technological challenge. In this paper, we describe the construction of an ...
متن کامل