SOFTWARE FOR ADAPTING DSPZ RECEIVERS TO THE URAN INTERFEROMETER NETWORK
Journal Title: Odessa Astronomical Publications - Year 2017, Vol 30, Issue
Abstract
More than 10 years ago, URAN interferometer network (Megn A.V.,1997; Konovalenko A.A., 2014) had been equipped with newly designed receivers with a pass band extended up to 250 kHz and software rejection of interferences (Rashkovskii, 2012). The broadening of bandwidth of received signal increase the sensitivity of the receivers significantly and let us to investigate the angular structure about one hundred radio sources. A software package had been developed that allows: preparing a program of observations, carrying out observations automatically, making data cross-correlation, calculating visibility functions for all pairs of antennae, and fitting models of an angular structure of the sources. Data storage formats were elaborated for each stage of recording or processing. At present, new digital radio astronomy receiver DSPZ have been developed by IRA NASU (Zakharenko, 2016). The receiver allows recording an entire bandwidth of signals of a decameter range from 8 to 32 MHz. It is used at UTR-2 and URAN radio telescopes operated in a single dish mode. Application of the receivers for interferometer observation with the URAN network provides additional advantages in accuracy and sensitivity of studies. In this report we consider the data formats and synchronization methods used in URAN equipment and DSPZ receivers, and discuss algorithms of their transformation. Newly elaborated software is described, that allows selecting a set of frequency bands of signals recorded with DSPZ and converting them to the form used by the URAN software. This approach allows us to carry out the interferometer observations in an the extended frequency range provided by DSPZ and to use as much as possible the software package developed for the URAN network for data reduction.
Authors and Affiliations
E. A. Isaeva, O. A. Lytvynenko, V. A. Shepelev
Keywords
Related Articles
- EP ID EP355781
- DOI 10.18524/1810-4215.2017.30.115456
- Views 71
- Downloads 0
OBTAINING POSITIONS OF ASTEROIDS FROM DIGITIZED PROCESSING OF PHOTOGRAPHIC OBSERVATIONS IN BALDONE OBSERVATORY (CODE 069)
Digital processing of photographic plates of star fields allows to determine with high accuracy the coordinates and stellar magnitudes for all registered objects on these plates. The processing results can be used for a...
INFLUENCE OF SPACE WEATHER ON A CARDIOVASCULAR SYSTEM OF A HUMAN BEING DURING VARIOUS SOLAR CYCLE PHASES
The study of relationship of dynamics of space weather parameters to changes of cardiovascular system state of a human being was carried out by data of measurements of volunteer groups in October – December 2009 and Marc...
PHOTOMETRY OF COMET С/2009 P1 (GARRADD) BEFORE AND AFTER PERIHELION
During the period from September 2011 to February 2012, photometric observations of comet C/2009 P1 (Garradd) were performed on the 0.6-m telescope MC AMED at the peak Terskol (North-Caucasus). The paper presents an anal...
PECULIARITIES OF A GROUP RESPONSE OF CARDIOVASCULAR SYSTEM OF VOLUNTEERS AT DIFFERENT LATITUDES TO CHANGES OF SPACE WEATHER PARAMETERS
A simultaneous monitoring in evaluating of the response of a cardiovascular system of healthy volunteers was performed. The research was oriented to changes of a space weather parameters in aurural (Tixie), subauroral (Y...
THE PHYSICAL MEANING OF THE TITIUS-BODE FORMULA
It is proposed an special hypothesis of the formation of symmetric objects in space with the help of the interference of standing waves which act in the process of evolution of the primordial gas-dust cloud including the...