title: Ð£ÑÐµÑ ÑÑÑÑÐºÑÑÑÑ ÑÐ°Ð´Ð¸Ð¾Ð¸ÑÑÐ¾ÑÐ½Ð¸ÐºÐ° Ð¿ÑÐ¸ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐµ Ð³ÐµÐ¾Ð´ÐµÐ·Ð¸ÑÐµÑÐºÐ¸Ñ Ð Ð¡ÐÐ Ð½Ð°Ð±Ð»ÑÐ´ÐµÐ½Ð¸Ð¹
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Accounting for the Structure of a Radio Source in the Processing of Geodetic VLBI Observations
Creators: name: Ð¡ÐµÑÐ±Ð¸Ð½, ÐÑÑÐµÐ½Ð¸Ð¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2022
Subjects: Ð²Ð½ÐµÐ³Ð°Ð»Ð°ÐºÑÐ¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ°Ð´Ð¸Ð¾Ð¸ÑÑÐ¾ÑÐ½Ð¸Ðº
Ð·Ð°Ð´ÐµÑÐ¶ÐºÐ° ÑÐ¸Ð³Ð½Ð°Ð»Ð° Ð¾Ñ ÑÐ°Ð´Ð¸Ð¾Ð¸ÑÑÐ¾ÑÐ½Ð¸ÐºÐ°
Ð³ÑÑÐ¿Ð¿Ð¾Ð²Ð°Ñ Ð·Ð°Ð´ÐµÑÐ¶ÐºÐ°
ÑÑÑÑÐºÑÑÑÐ½Ð°Ñ Ð·Ð°Ð´ÐµÑÐ¶ÐºÐ°
ÐºÐ°ÑÑÐ° ÑÐ°Ð´Ð¸Ð¾ÑÑÐºÐ¾ÑÑÐ¸
Ð Ð¡ÐÐ
Ð¸Ð¾Ð½Ð¾ÑÑÐµÑÐ½Ð¾-ÑÐ²Ð¾Ð±Ð¾Ð´Ð½Ð°Ñ ÐºÐ¾Ð¼Ð±Ð¸Ð½Ð°ÑÐ¸Ñ Ð·Ð°Ð´ÐµÑÐ¶ÐµÐº
ÑÑÐ½ÐºÑÐ¸Ñ ÐÐ°ÑÑÑÐ°
extragalactic radio source
radio source delay
group delay
structural delay
radio brightness map
VLBI
ionospheric-free combination of delays
Gaussian function

description: Ð¢ÐµÐ¼Ð° Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ: Â«Ð£ÑÐµÑ ÑÑÑÑÐºÑÑÑÑ ÑÐ°Ð´Ð¸Ð¾Ð¸ÑÑÐ¾ÑÐ½Ð¸ÐºÐ° Ð¿ÑÐ¸ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐµ Ð³ÐµÐ¾Ð´ÐµÐ·Ð¸ÑÐµÑÐºÐ¸Ñ Ð Ð¡ÐÐ-Ð½Ð°Ð±Ð»ÑÐ´ÐµÐ½Ð¸Ð¹Â». ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° ÑÐ¾Ð·Ð´Ð°Ð½Ð¸Ñ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½ÑÑ ÑÑÐµÐ´ÑÑÐ², Ð¿Ð¾Ð¼Ð¾Ð³Ð°ÑÑÐ¸Ñ ÑÑÐ¸ÑÑÐ²Ð°ÑÑ ÑÑÑÑÐºÑÑÑÑ Ð¸ÑÑÐ¾ÑÐ½Ð¸ÐºÐ° Ð¿ÑÐ¸ ÑÐµÐ³ÑÐ»ÑÑÐ½Ð¾Ð¹ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐµ Ð Ð¡ÐÐ-Ð½Ð°Ð±Ð»ÑÐ´ÐµÐ½Ð¸Ð¹. Ð Ð¡ÐÐ-Ð½Ð°Ð±Ð»ÑÐ´ÐµÐ½Ð¸Ñ Ð¿ÑÐ¸Ð¼ÐµÐ½ÑÑÑÑÑ Ð¿ÑÐ¸ ÑÐ°ÑÑÑÑÐµ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÐ¾Ð² Ð²ÑÐ°ÑÐµÐ½Ð¸Ñ ÐÐµÐ¼Ð»Ð¸ (ÐÐÐ), ÐºÐ¾ÑÐ¾ÑÑÐµ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·ÑÑÑÑÑ Ð² ÑÐ¸ÑÑÐµÐ¼Ð°Ñ Ð½Ð°Ð²Ð¸Ð³Ð°ÑÐ¸Ð¸. Ð ÑÐ°ÑÑÐ½Ð¾ÑÑÐ¸, Ð¿ÑÐ¸ Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ð¸ ÐµÐ¶ÐµÑÑÑÐ¾ÑÐ½ÑÑ Ð¿Ð¾Ð¿ÑÐ°Ð²Ð¾Ðº Ðº Ð²ÑÐµÐ¼Ð¸ÑÐ½Ð¾Ð¼Ñ Ð²ÑÐµÐ¼ÐµÐ½Ð¸ UT1 Ð¸ÑÐ¿Ð¾Ð»ÑÐ·ÑÐµÑÑÑ Ð³ÑÑÐ¿Ð¿Ð¾Ð²Ð°Ñ Ð·Ð°Ð´ÐµÑÐ¶ÐºÐ° ÑÐ¸Ð³Ð½Ð°Ð»Ð° Ð¾Ñ Ð²Ð½ÐµÐ³Ð°Ð»Ð°ÐºÑÐ¸ÑÐµÑÐºÐ¸Ñ ÑÐ°Ð´Ð¸Ð¾Ð¸ÑÑÐ¾ÑÐ½Ð¸ÐºÐ¾Ð² Ð¼ÐµÐ¶Ð´Ñ Ð´Ð²ÑÐ¼Ñ ÑÐ´Ð°Ð»ÑÐ½Ð½ÑÐ¼Ð¸ ÑÐ°Ð´Ð¸Ð¾ÑÐµÐ»ÐµÑÐºÐ¾Ð¿Ð°Ð¼Ð¸. ÐÑÑÐ¿Ð¿Ð¾Ð²Ð°Ñ Ð·Ð°Ð´ÐµÑÐ¶ÐºÐ° ÑÐ²Ð»ÑÐµÑÑÑ ÑÑÐ¼Ð¼Ð¾Ð¹ Ð·Ð°Ð´ÐµÑÐ¶ÐµÐº, Ð¾Ð±ÑÑÐ»Ð¾Ð²Ð»ÐµÐ½Ð½ÑÑ ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÐ¼Ð¸ ÑÑÑÐµÐºÑÐ°Ð¼Ð¸. ÐÐ°Ð´ÐµÑÐ¶ÐºÐ° ÑÐ¸Ð³Ð½Ð°Ð»Ð° Ð¾Ñ ÑÐ°Ð´Ð¸Ð¾Ð¸ÑÑÐ¾ÑÐ½Ð¸ÐºÐ°, Ð¾Ð±ÑÑÐ»Ð¾Ð²Ð»ÐµÐ½Ð½Ð°Ñ ÐµÐ³Ð¾ ÑÑÑÑÐºÑÑÑÐ¾Ð¹ Ð½Ð°Ð·ÑÐ²Ð°ÐµÑÑÑ ÑÑÑÑÐºÑÑÑÐ½Ð¾Ð¹ Ð·Ð°Ð´ÐµÑÐ¶ÐºÐ¾Ð¹. Ð¡ÑÑÐµÑÑÐ²ÑÑÑÐ¸Ðµ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ñ ÑÑÑÑÐ° ÑÑÑÑÐºÑÑÑÐ½Ð¾Ð¹ Ð·Ð°Ð´ÐµÑÐ¶ÐºÐ¸ Ð¾Ð±Ð»Ð°Ð´Ð°ÑÑ ÑÐ¸ÑÐ»ÐµÐ½Ð½Ð¾Ð¹ Ð½ÐµÑÑÑÐ¾Ð¹ÑÐ¸Ð²Ð¾ÑÑÑÑ, Ð¿Ð¾ÑÑÐ¾Ð¼Ñ Ð½Ðµ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·ÑÑÑÑÑ Ð¿ÑÐ¸ Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ð¸ ÐÐÐ, Ð° ÑÐ°Ðº Ð¶Ðµ Ð´ÑÑÐ³Ð¸Ñ Ð·Ð°Ð´Ð°Ñ, ÑÐ²ÑÐ·Ð°Ð½Ð½ÑÑ Ñ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ¾Ð¹ Ð´Ð°Ð½Ð½ÑÑ Ð Ð¡ÐÐ-Ð½Ð°Ð±Ð»ÑÐ´ÐµÐ½Ð¸Ð¹. ÐÐµÑÐµÐ´Ð¾ Ð¼Ð½Ð¾Ð¹ ÑÑÐ¾ÑÐ»Ð° ÑÐµÐ»Ñ ÑÐ¾Ð·Ð´Ð°ÑÑ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ñ, ÐºÐ¾ÑÐ¾ÑÑÑ Ð¼Ð¾Ð¶Ð½Ð¾ Ð±ÑÐ»Ð¾ Ð±Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°ÑÑ Ð´Ð»Ñ ÑÑÑÑÐ° ÑÑÑÑÐºÑÑÑÑ Ð¸ÑÑÐ¾ÑÐ½Ð¸ÐºÐ°.Ð ÑÐ¾Ð´Ðµ ÑÐ°Ð±Ð¾ÑÑ ÑÐ´Ð°Ð»Ð¾ÑÑ Ð½Ð°Ð¿Ð¸ÑÐ°ÑÑ ÑÑÐ´ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼ Ð½Ð° ÑÐ·ÑÐºÐµ Python, Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð½ÑÑ Ð½Ð° Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼Ð°Ñ, Ð¾Ð¿Ð¸ÑÐ°Ð½Ð½ÑÑ Ð² ÑÑÐ°ÑÑÐµ ÐÐ°ÑÑÐ¸ÐºÐ° Ð¨Ð°ÑÐ»Ð¾ [8], Ð¿Ð¾-ÑÐ°Ð·Ð½Ð¾Ð¼Ñ ÑÑÐ¸ÑÑÐ²Ð°ÑÑÐ¸Ñ ÑÑÑÑÐºÑÑÑÑ Ð¸ÑÑÐ¾ÑÐ½Ð¸ÐºÐ°, Ð¸ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð¾ Ð¸Ñ ÑÑÐ°Ð²Ð½ÐµÐ½Ð¸Ðµ.
description: The subject of the graduate qualification work is âAccounting for the Structure of a Radio Source in the Processing of Geodetic VLBI Observationsâ. This work is devoted to the creation of software tools that help to take into account the structure of the source in the regular processing of VLBI observations. VLBI observations are used to calculate the parameters of the Earth's rotation (ERP), which are used in navigation systems. In particular, the group delay of the signal from extragalactic radio sources between two remote radio telescopes is used to determine the daily corrections to universal time UT1. The group delay is the sum of the delays due to various effects. The signal delay from a radio source due to its structure is called structural delay. The existing programs for taking into account the structural delay have numerical instability, therefore they are not used in determining the PVD, as well as other tasks related to the processing of VLBI observation data. Before me, the goal was to create a program that could be used to take into account the structure of the source.In the course of the work, it was possible to write a number of Python programs based on the algorithms described in the article by Patrick Charlot [8], which study the creation of a source in different ways, and they were compared.