| タイトル | A new method for monitoring and removing SuperDARN radar DC offsets |
| その他のタイトル | SuperDARNレーダーのDCオフセットの監視と除去の新しい方法 |
| 著者（日） | 行松 彰; 堤 雅基; 山岸 久雄; 佐藤 夏雄 |
| 著者（英） | Yukimatsu, Akira Sessai; Tsutsumi, Masaki; Yamagishi, Hisao; Sato, Natsuo |
| 著者所属（日） | 国立極地研究所; 国立極地研究所; 国立極地研究所; 国立極地研究所 |
| 著者所属（英） | National Institute of Polar Research; National Institute of Polar Research; National Institute of Polar Research; National Institute of Polar Research |
| 発行日 | 2002-09 |
| 刊行物名 | Advances in Polar Upper Atmosphere Research
Advances in Polar Upper Atmosphere Research |
| 号 | 16 |
| 開始ページ | 181 |
| 終了ページ | 192 |
| 刊行年月日 | 2002-09 |
| 言語 | eng |
| 抄録 | DC offsets in quadrature outputs (I/Q signals) pertinent to the SuperDARN HF radars can cause problems in determining and analyzing auto-correlation functions, cross-correlation functions and raw time series data if they are not negligible. A new code has been developed to monitor and remove DC offsets. To obtain correct DC offset levels and noise levels, the offsets can be best removed using I/Q signals during the receive-only period, i.e., during each clear frequency search stage. The new code has been implemented in the current radar operating system and installed at the SENSU Syowa radars, and DC offset values have been obtained and removed continuously since October 2001. |
| キーワード | high frequency radar; SuperDARN radar; auto-correlation function; Syowa Station; computer program; systematic error; radar echo; Doppler velocity; 高周波レーダー; SuperDARNレーダー; 自己相関関数; 昭和基地; 計算機プログラム; 系統誤差; レーダーエコー; Doppler速度 |
| 資料種別 | Technical Report |
| ISSN | 1345-1065 |
| SHI-NO | AA0045079014 |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/51978 |
