Processing System for Coherent Dedispersion of Pulsar Radio Emission

Authors :: A., Girin I.
F., Likhachev S.
S., Andrianov A.
S., Burgin M.
V., Popov M.
G., Rudnitskiy A.
A., Soglasnov V.
A, Zuga V.
Publication Year :: 2023
Abstract: The work describes a system for converting VLBI observation data using the algorithms of coherent dedispersion and compensation of two-bit signal sampling. Coherent dedispersion is important for processing pulsar observations to obtain the best temporal resolution, while correction for signal sampling makes it possible to get rid of a number of parasitic effects that interfere with the analysis of the diffraction pattern of pulsars. A pipeline has been established that uses the developed converter and the ASC Software Correlator, which will allow reprocessing all archived data of Radioastron pulsar observations and to conduct a search for giant pulses, which requires the best temporal resolution.<br />Comment: 16 pages, 4 figures