Library · IAA RAS

Papers

Determination of Azimuth from Radio Observations of Geostationary Satellites

D. A. Trofimov, S. D. Petrov, I. V. Chekunov

Transactions of IAA RAS, issue 66, 45–52 (2023)

Keywords: radiointerferometry, azimuth adjustment, geostationary satellite

Abstract

The work is devoted to the problem of the operational determination of the azimuth regardless of the meteorological conditions for the adjustment of inertial navigation systems. The requirements for determining the azimuth for this task are 1' in accuracy. The current methods of determining the azimuth, such as high-precision satellite navigation, astronomical observations, geodetic and gyrotheodolite measurements, are considered. The currently used methods for determining azimuth, astronomical, geodetic and gyrotheodolite have drawbacks that do not allow them to meet the requirements. In order to solve this problem, we propose to carry out radio interferometric observations of geostationary satellites of the Earth in order to determine the azimuth. Geostationary satellites, as a rule, are communication or television satellites, thus there are bright sources of radio emission in the sky and their signal is much more difficult to suppress than the signal of global navigation satellite systems. Their number is large (several hundred), they can be considered stationary on the celestial sphere, so there should be no problems with pointing at them. The widespread use of satellite communications and television technologies will make it possible to use already tested technological solutions in the creation of observational equipment. Preliminary calculations show that it is possible to obtain azimuthal information with a given accuracy and required efficiency. Two methods of determining the azimuth have been worked out, in the conditions of the known and unknown base of the interferometer. It is shown that the method with a known base is faster and more reliable, does not have some of the problems that are inherent in the method with an unknown base. Problems of these methods are considered, development prospects are proposed.

Citation

Text

BibTeX

RIS

D. A. Trofimov, S. D. Petrov, I. V. Chekunov. Determination of Azimuth from Radio Observations of Geostationary Satellites // Transactions of IAA RAS. — 2023. — Issue 66. — P. 45–52.

@article{trofimov2023,
  abstract = {The work is devoted to the problem of the operational determination of the azimuth regardless of the meteorological conditions for the adjustment of inertial navigation systems. The requirements for determining the azimuth for this task are 1' in accuracy. The current methods of determining the azimuth, such as high-precision satellite navigation, astronomical observations, geodetic and gyrotheodolite measurements, are considered. The currently used methods for determining azimuth, astronomical, geodetic and gyrotheodolite have drawbacks that do not allow them to meet the requirements. 
In order to solve this problem, we propose to carry out radio interferometric observations of geostationary satellites of the Earth in order to determine the azimuth. Geostationary satellites, as a rule, are communication or television satellites, thus there are bright sources of radio emission in the sky and their signal is much more difficult to suppress than the signal of global navigation satellite systems. Their number is large (several hundred), they can be considered stationary on the celestial sphere, so there should be no problems with pointing at them. The widespread use of satellite communications and television technologies will make it possible to use already tested technological solutions in the creation of observational equipment. 
Preliminary calculations show that it is possible to obtain azimuthal information with a given accuracy and required efficiency. Two methods of determining the azimuth have been worked out, in the conditions of the known and unknown base of the interferometer. It is shown that the method with a known base is faster and more reliable, does not have some of the problems that are inherent in the method with an unknown base. Problems of these methods are considered, development prospects are proposed.},
  author = {D.~A. Trofimov and S.~D. Petrov and I.~V. Chekunov},
  doi = {10.32876/ApplAstron.66.45-52},
  issue = {66},
  journal = {Transactions of IAA RAS},
  keyword = {radiointerferometry, azimuth adjustment, geostationary satellite},
  pages = {45--52},
  title = {Determination of Azimuth from Radio Observations of Geostationary Satellites},
  url = {http://iaaras.ru/en/library/paper/2163/},
  year = {2023}
}

TY  - JOUR
TI  - Determination of Azimuth from Radio Observations of Geostationary Satellites
AU  - Trofimov, D. A.
AU  - Petrov, S. D.
AU  - Chekunov, I. V.
PY  - 2023
T2  - Transactions of IAA RAS
IS  - 66
SP  - 45
AB  - The work is devoted to the problem of the operational determination
of the azimuth regardless of the meteorological conditions for the
adjustment of inertial navigation systems. The requirements for
determining the azimuth for this task are 1' in accuracy. The current
methods of determining the azimuth, such as high-precision satellite
navigation, astronomical observations, geodetic and gyrotheodolite
measurements, are considered. The currently used methods for
determining azimuth, astronomical, geodetic and gyrotheodolite have
drawbacks that do not allow them to meet the requirements.   In order
to solve this problem, we propose to carry out radio interferometric
observations of geostationary satellites of the Earth in order to
determine the azimuth. Geostationary satellites, as a rule, are
communication or television satellites, thus there are bright sources
of radio emission in the sky and their signal is much more difficult
to suppress than the signal of global navigation satellite systems.
Their number is large (several hundred), they can be considered
stationary on the celestial sphere, so there should be no problems
with pointing at them. The widespread use of satellite communications
and television technologies will make it possible to use already
tested technological solutions in the creation of observational
equipment.   Preliminary calculations show that it is possible to
obtain azimuthal information with a given accuracy and required
efficiency. Two methods of determining the azimuth have been worked
out, in the conditions of the known and unknown base of the
interferometer. It is shown that the method with a known base is
faster and more reliable, does not have some of the problems that are
inherent in the method with an unknown base. Problems of these
methods are considered, development prospects are proposed.
DO  - 10.32876/ApplAstron.66.45-52
UR  - http://iaaras.ru/en/library/paper/2163/
ER  -