Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005spie.5447..288e&link_type=abstract
Lasers for Measurements and Information Transfer 2004. Edited by Privalov, Vadim E. Proceedings of the SPIE, Volume 5447, pp
Astronomy and Astrophysics
Astronomy
Scientific paper
The acousto-optical processor (AOP) of a new type for the investigation of pulsar radio emission is proposed that provides for the compensation of signal dispersion in a wide frequency bandwidth. The AOP is based on an acousto-optical spectrum analyzer with a CCD photodetector operating in a special pipeline operational mode (shift-and-add mode), which allows spectral components of the input signal to be added with a controlled time delay immediately in the CCD photodetector. The proposed AOP was successfully used on an RT-64 radio telescope (Kalyazin Radio Astronomy Observatory FIAN) for the observation of pulsars at 1.4 GHz band with bandwidth 45 MHz. The method of direct interstellar medium dispersion measurement on two-frequency band observations with application AOP is described. The measurements of DM for pulsar PSR 1937 + 21 are submitted.
Esepkina Nelli A.
Lavrov Aleksandr P.
Molodyakov Sergey A.
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