Journal of the Korean Institute of Telematics and Electronics (대한전자공학회논문지)
- Volume 26 Issue 2
- /
- Pages.18-28
- /
- 1989
- /
- 1016-135X(pISSN)
Pointing Accuracy Establishment and Efficiency Measurement of 13.7m Antenna for Observing Cosmic Radio Wave
13.7m 우주전파 관측용 안테나의 지향정도 확립과 효율 측정
- Cho, Se-Hyung (Institute of Space Science and Astronomy) ;
- Jung, Jae-Hoon (Institute of Space Science and Astronomy) ;
- Lee, Young-Ung (Dept. of Astronomy., Univ. of Massachusetts) ;
- Kim, Hyun-Goo (Institute of Space Science and Astronomy) ;
- Roh, Duk-Gyoo (Institute of Space Science and Astronomy) ;
- Park, Yong-Sun (Institute of Space Science and Astronomy) ;
- Kim, Bong-Gyu (Institute of Space Science and Astronomy) ;
- Auh, Byung-Ryul (Institute of Space Science and Astronomy) ;
- Lee, Chang-Hoon (Institute of Space Science and Astronomy) ;
- Yim, In-Sung (Institute of Space Science and Astronomy)
- 조세형 (天文宇宙科學硏究所) ;
- 정재훈 (天文宇宙科學硏究所) ;
- 이영웅 (메사추세츠 州立大學 物理天文學科) ;
- 김현구 (天文宇宙科學硏究所) ;
- 노덕규 (天文宇宙科學硏究所) ;
- 박용선 (天文宇宙科學硏究所) ;
- 김봉규 (天文宇宙科學硏究所) ;
- 오병렬 (天文宇宙科學硏究所) ;
- 이창훈 (天文宇宙科學硏究所) ;
- 임인성 (天文宇宙科學硏究所)
- Published : 1989.02.01
Abstract
In this paper, we describe a pointing accuracy establishment and efficiency measurement of 13.7 m antenna for observing cosmic radio wave which is in the first stage just after finishing its installation. The initial stage of pointing model, 1 and 2 were set up with the observational data of Sun and Moon which are large in visual diameter and also strong in radio intensity. Based on this model, model 3 and 4 were established within the available operational range, i.e., 3.8" in azimuth deviation, 10.5" in elevation deviation, with the observational data of SiO maser source which is a point source and distributed in overall sky. Both apeture efficiency anhd beam efficiency were measured by observing Venus whose brightness temperature is well-known. The resulting corrected efficiencies were 35% and 50% respectively.
본 논문에서는 설치후 초기단계에 있는 우주전파 관측용 13.7m 안테나의 지향정도 확립과 효율측정에 대하여 기술하였다. 지향성 모델은 처음 단계인 모델 1, 2에서는 태양과 달 같은 시직경이 크고 전파강도가 센 천체를 관측하여 설정되었고, 이를 이용한 모델 3, 4에서 전 하늘에 걸친 SiO 메이저원인점 전파원을 관측하여 방위각 오차 3.8" 고도각 오차 10.5"의 실용성 있는 번위로 확립되었다. 구경은 86GHz대에서 각각 35%, 50%로 나타났다.
Keywords