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On the Possibility of Adjusting the Main Mirror of the RATAN-600 Radio Telescope Using Laser Measuring Systems

Transactions of IAA RAS, issue 56, 14–21 (2021)

Keywords: radio telescopes, large antenna surface, methods, accuracy of measurements

Abstract

The new method of a large variable profile antenna surface geometric control is presented using RATAN-600 radio telescope as an example. The modern high-precision laser systems based on the Leica TDRA6000 total station and the Leica AT402 absolute laser tracker were utilized. The possibilities of variable profile antenna adjustment are shown for the radial position measurements of the antenna elements. A brief description is given of the standard geodetic methods for the radial position determination of the southern RATAN sector elements, with the equipment and tools used during both the construction and the subsequent antenna operation. We analyze the standard geodetic method errors and advantages of modern laser coordinate measuring systems for elements along the radius. The preliminary estimation of the method accuracy was made. We carried out the geodetic reference frame (GRF) signs measurements by the total station and providing the recommendations for using GRF in case of individual elements position determination. Various types of metrological reflectors and adapters for the GRF setting have been tested. We tested the elements radial positions measurements at the RATAN Southern sector. The geodetic adjustment of the elements was carried out after preventive maintenance of individual elements groups using a high-precision Leica TDRA6000 total station. An estimation of the measurements convergence for selected groups in different antenna parts is carried out. Additionally, the errors of element positions due to the errors of the reflecting surface binding to the representative sites plane were considered. The technique of the Flat reflector elements position determination is considered. The possibilities of correcting elements with maximum deviations using the absolute laser tracker Leica AT402 are shown. Test measurements of the Flat reflector elements positions were carried out. Conclusions are given on the results of correcting individual element groups. The recommendations based on the above results and further work for the method improvement are suggested.

Citation

Text

BibTeX

RIS

V. I. Zharov, Yu. V. Sotnikova. On the Possibility of Adjusting the Main Mirror of the RATAN-600  Radio Telescope Using Laser Measuring Systems // Transactions of IAA RAS. — 2021. — Issue 56. — P. 14–21.

@article{zharov2021,
  abstract = {The new method of a large variable profile antenna surface geometric control is presented using RATAN-600 radio telescope as an example. The modern high-precision laser systems based on the Leica TDRA6000 total station and the Leica AT402 absolute laser tracker were utilized. The possibilities of variable profile antenna adjustment are shown for the radial position measurements of the antenna elements. A brief description is given of the standard geodetic methods for the radial position determination of the southern RATAN sector elements, with the equipment and tools used during both the construction and the subsequent antenna operation. We analyze the standard geodetic method errors and advantages of modern laser coordinate measuring systems for elements along the radius. The preliminary estimation of the method accuracy was made.
We carried out the geodetic reference frame (GRF) signs measurements by the total station and providing the recommendations for using GRF in case of individual elements position determination. Various types of metrological reflectors and adapters for the GRF setting have been tested. We tested the elements radial positions measurements at the RATAN Southern sector. The geodetic adjustment of the elements was carried out after preventive maintenance of individual elements groups using a high-precision Leica TDRA6000 total station. An estimation of the measurements convergence for selected groups in different antenna parts is carried out.
Additionally, the errors of element positions due to the errors of the reflecting surface binding to the representative sites plane were considered.
The technique of the Flat reflector elements position determination is considered. The possibilities of correcting elements with maximum deviations using the absolute laser tracker Leica AT402 are shown. Test measurements of the Flat reflector elements positions were carried out. Conclusions are given on the results of correcting individual element groups.
The recommendations based on the above results and further work for the method improvement are suggested.},
  author = {V.~I. Zharov and Yu.~V. Sotnikova},
  doi = {10.32876/ApplAstron.56.14-21},
  issue = {56},
  journal = {Transactions of IAA RAS},
  keyword = {radio telescopes, large antenna surface, methods, accuracy of measurements},
  pages = {14--21},
  title = {On the Possibility of Adjusting the Main Mirror of the RATAN-600  Radio Telescope Using Laser Measuring Systems},
  url = {http://iaaras.ru/en/library/paper/2079/},
  year = {2021}
}

TY  - JOUR
TI  - On the Possibility of Adjusting the Main Mirror of the RATAN-600  Radio Telescope Using Laser Measuring Systems
AU  - Zharov, V. I.
AU  - Sotnikova, Yu. V.
PY  - 2021
T2  - Transactions of IAA RAS
IS  - 56
SP  - 14
AB  - The new method of a large variable profile antenna surface geometric
control is presented using RATAN-600 radio telescope as an example.
The modern high-precision laser systems based on the Leica TDRA6000
total station and the Leica AT402 absolute laser tracker were
utilized. The possibilities of variable profile antenna adjustment
are shown for the radial position measurements of the antenna
elements. A brief description is given of the standard geodetic
methods for the radial position determination of the southern RATAN
sector elements, with the equipment and tools used during both the
construction and the subsequent antenna operation. We analyze the
standard geodetic method errors and advantages of modern laser
coordinate measuring systems for elements along the radius. The
preliminary estimation of the method accuracy was made.  We carried
out the geodetic reference frame (GRF) signs measurements by the
total station and providing the recommendations for using GRF in case
of individual elements position determination. Various types of
metrological reflectors and adapters for the GRF setting have been
tested. We tested the elements radial positions measurements at the
RATAN Southern sector. The geodetic adjustment of the elements was
carried out after preventive maintenance of individual elements
groups using a high-precision Leica TDRA6000 total station. An
estimation of the measurements convergence for selected groups in
different antenna parts is carried out.  Additionally, the errors of
element positions due to the errors of the reflecting surface binding
to the representative sites plane were considered.  The technique of
the Flat reflector elements position determination is considered. The
possibilities of correcting elements with maximum deviations using
the absolute laser tracker Leica AT402 are shown. Test measurements
of the Flat reflector elements positions were carried out.
Conclusions are given on the results of correcting individual element
groups.  The recommendations based on the above results and further
work for the method improvement are suggested.
DO  - 10.32876/ApplAstron.56.14-21
UR  - http://iaaras.ru/en/library/paper/2079/
ER  -