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The log‐periodic array at the Clark Lake Radio Observatory
Author(s) -
Erickson W. C.,
Kuiper T. B. H.
Publication year - 1973
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/rs008i010p00845
Subject(s) - observatory , physics , cassiopeia a , brightness , wavelength , ionosphere , solar radio , optics , remote sensing , astrophysics , astronomy , geology , supernova , supernova remnant
A log‐periodic array, three km in length, is operating at Clark Lake Radio Observatory. It makes one‐dimensional sweeps of the solar brightness distribution in the frequency range 20 to 65 MHz once per sec. The phasing of the array and the receiving system are described, as well as how the dynamic spectra are analyzed for the positions of solar radio sources. Simultaneous measurements at many frequencies enable the observer to remove the effects of ionospheric refraction and to obtain fundamental positions to an accuracy of about one arc min at decametric wavelengths. Fundamental positions are given for Cassiopeia A.