Robust estimation of interplanetary scintillation

Details Robust estimation of interplanetary scintillation Robust estimation of interplanetary scintillation

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.254..273w&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 254, Jan. 15, 1992, p. 273-276.

Statistics

Computation

6

Interplanetary Space, Maximum Likelihood Estimates, Scintillation, Computational Astrophysics, Radio Sources (Astronomy), Random Processes

Scientific paper

Interplanetary scintillation (IPS) is a random process, so measurements of its power are affected by self-noise. The noise process is therefore nonstationary whenever the mean IPS power changes, such as when performing drift scans across a radio source. An estimator for IPS is presented which takes proper account of the noise statistics and performs significantly better than a simple 'matched' filter. The probabilistic basis of this estimator also makes it a powerful discriminator against interference, capable of delivering good estimates of scintillating power even when many of the data are badly corrupted.

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