| Item type |
紀要論文 / Departmental Bulletin Paper(1) |
| 公開日 |
2019-01-21 |
| タイトル |
|
|
タイトル |
電波天文観測に向けた臼田宇宙空間観測所64ｍアンテナの性能評価とその改善に向けた取り組み |
|
タイトル言語 |
ja |
| タイトル |
|
|
タイトル |
Performance evaluation of Usuda Deep Space Center 64 m antenna for radio astronomical observations and efforts on its improvement |
|
タイトル言語 |
en |
| 著者 |
藏原, 昂平
中西, 裕之
村田, 泰宏
上原, 顕太
青木, 貴弘
今井, 裕
藤沢, 健太
米倉, 覚則
|
| 言語 |
|
|
言語 |
jpn |
| キーワード |
|
|
主題言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Usuda 64m antenna |
| キーワード |
|
|
主題言語 |
en |
|
主題Scheme |
Other |
|
主題 |
performance evaluation |
| キーワード |
|
|
主題言語 |
en |
|
主題Scheme |
Other |
|
主題 |
radio |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
departmental bulletin paper |
| 要約 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
The Usuda Deep Space Center 64 m antenna is the largest radio antenna in Japan, taking an important role as a tracking station of Japanese spacecrafts. It is equipped with receivers of L, S, C, and X bands, which are important for the centimeter-wavelength radio astronomy in Japan. Its system performance such as antenna patterns and receiver and system noise temperatures had not been regularly evaluated since its primary role is not radio astronomical operations. Therefore, we measured the current values of these parameters. We observed 3C274 in a raster scan mode and obtained beam sizes at 1.4 and 1.6 GHz, respectively, to be 0.209 ± 0.007 deg and 0.176 ± 0.007 deg in azimuth and 0.210 ± 0.023 deg and 0.148 ± 0.030 deg in elevation. The IF levels of hot and cold loads, sky plus noise-sources, and the open sky were measured and obtained system and receiver noise temperatures to be 92.3 ± 8.7 K and 27.1 ± 13.3 K, respectively, at 1.4 GHz, and 86.4 ± 5.2 K and 42.6 ± 12.1 K at 1.6 GHz. We measured equivalent temperatures of the noise diode to be 33.5 ± 5.9 K and 29.8 ± 6.7 K in 1.4 GHz and 1.6 GHz, respectively. The antenna driving parameters such as maximum velocities and accelerations in azimuth and elevation were also measured. Here we present the spectral line observations that implemented a frequency switching mode. |
|
内容記述言語 |
en |
| 収録雑誌名 |
ja : 鹿児島大学理学部紀要
en : Reports of the Faculty of Science, Kagoshima University
巻 51,
p. 14-33,
発行日 2018-12-31
|
| 作成日 |
|
|
日付 |
2018-12-31 |
|
日付タイプ |
Issued |
| ISSN |
|
|
収録物識別子タイプ |
PISSN |
|
ISSN |
13456938 |
| NII書誌ID（雑誌） |
|
|
収録物識別子タイプ |
NCID |
|
NC ID |
AA11246904 |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| NDC |
|
|
主題Scheme |
NDC |
|
主題 |
440 |
| 公開者・出版者 |
|
|
出版者 |
鹿児島大学 |
|
出版者言語 |
ja |
| 公開者・出版者 |
|
|
出版者 |
Kagoshima University |
|
出版者言語 |
en |
AA11246904_v51_p14-33 (7.1 MB)
