An Analysis of the Random-Group Data Format and a Design of the Data File Structure for a Solar Radio Heliograph

Gao Jiaojiao; Wang Feng; Dai Wei; Ji Kaifan; Deng Hui; Liu Donghao; Wang Wei

Astronomical Research and Technology > 2013 > 10(4): 365-371.

Gao Jiaojiao, Wang Feng, Dai Wei, Ji Kaifan, Deng Hui, Liu Donghao, Wang Wei. An Analysis of the Random-Group Data Format and a Design of the Data File Structure for a Solar Radio Heliograph[J]. Astronomical Research and Technology, 2013, 10(4): 365-371.

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An Analysis of the Random-Group Data Format and a Design of the Data File Structure for a Solar Radio Heliograph

1.
Key Lab of Applications of Computer Technology of the Yunnan Province, University of Science and Technology of Kunming, Kunming 650500, China
2.
National Astronomical Observatory, Chinese Academy of Sciences, Beijing 100012, China
3.
Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China

More Information

Received Date: November 07, 2012
Revised Date: December 09, 2012
Published Date: October 14, 2013

Graphical Abstract

Abstract

Abstract

The CSRH (Chinese Spectral Radio Heliograph) is a new generation radio heliograph working in the wavelengths of centimeters and decimeters. It has entered the test stage. At this stage it is important to study error corrections, instrumental calibrations, and observational data precessing for the CSRH to facilitate its development. Efficient data storage and high-performance data processing are crucial to these studies for the CSRH. In this paper, by investigating current radio interferometers in the world and data formats supported by main-stream analysis softwares in radio astronomy (e.g. AIPS++ and CASA), we choose to analyze the widely adopted random-group format (UVFITS). We then design the structure of a random-group data file for the CSRH to store needed data, including the uv, antenna, and object-information data. We also design and test a software protocol. Our experiment shows that such a data file can be read and processed successfully by the CASA software. Our study is expected to help the development of the CSRH and benefit research of other astronomical instruments.
- Random-group format (UVFITS),
- Radio astronomy,
- CSRH

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References (7)

References

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