Data reduction and correction algorithm for digital real-time processing of cosmic ray measurements: NM64 monitoring at Dourbes

We present a data correction algorithm for real-time data processing for the NM64 galactic cosmic ray neutron monitor at the Royal Meteorological Institute (RMI) in Dourbes, Belgium. The correction is based on three main tests: a continuity test, tube ratios test and a derivative test. The continuit...

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Bibliographic Details
Published in:Advances in space research 2014-01, Vol.53 (1), p.71-76
Main Authors: Sapundjiev, Danislav, Nemry, Myriam, Stankov, Stanimir, Jodogne, Jean-Claude
Format: Article
Language:English
Subjects:
Algorithms
Continuity
Cosmic rays
Criteria
Data correction
Derivatives
Monitors
Real time
Stations
Time series
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Summary:We present a data correction algorithm for real-time data processing for the NM64 galactic cosmic ray neutron monitor at the Royal Meteorological Institute (RMI) in Dourbes, Belgium. The correction is based on three main tests: a continuity test, tube ratios test and a derivative test. The continuity test works as a high pass filter with a threshold based on the entire recorded dataset. Additionally, it monitors whether the logging takes place at regular intervals (continuously). The ratios test identifies noisy sections and the final derivative test criterion will identify single or double spikes by testing them against the median increase of the intensities. Using these criteria, all data from the cosmic ray station at Dourbes is corrected in real time. Test results have been compared with data from verified neutron monitor stations with a similar geomagnetic cutoff rigidity.
ISSN:0273-1177
1879-1948
DOI:10.1016/j.asr.2013.09.037