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The Establishment of Pointing Model for the TM65 m Radio Telescope.
- Source :
-
Chinese Astronomy & Astrophysics . Oct2015, Vol. 39 Issue 4, p524-537. 14p. - Publication Year :
- 2015
-
Abstract
- The method to establish the pointing model of the 65-meter radio telescope of Shanghai Astronomical Observatory (TM65 m) is described. The single-point data are collected by means of “cross scan”, then, they are fitted with a model including both the Gaussian and nonlinear terms. It is also simulated and analyzed how the antenna beam is broadened in the scanning process because of the angular size of a source. And the orbit prediction of sources is used to improve the modelling efficiency. Finally, an eight-parameter pointing model is built after fitting all the collected single-point errors. It is verified that the model works well in the X band and other low-frequency bands, the pointing accuracy at the X band attains 12.36 arcsec. [ABSTRACT FROM AUTHOR]
- Subjects :
- *RADIO telescopes
*DATA analysis
*ERROR rates
*ACCURACY
*LOGICAL fallacies
Subjects
Details
- Language :
- English
- ISSN :
- 02751062
- Volume :
- 39
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Chinese Astronomy & Astrophysics
- Publication Type :
- Academic Journal
- Accession number :
- 111497879
- Full Text :
- https://doi.org/10.1016/j.chinastron.2015.10.009