@article{oai:jaxa.repo.nii.ac.jp:00032815,
 author = {佐々木, 主税 and 木村, 磐根 and 橋本, 弘蔵 and SASAKI, C. and KIMURA, I. and HASHIMOTO, K.},
 journal = {宇宙科学研究所報告. 特集: 宇宙観測研究報告},
 month = {Mar},
 note = {1979年夏期にスタンフォード大学と共同で行われた EXOS-B/Siple 実験のサイプル信号の絶対強度について述べている。信号の観測はダイポールアンテナにより行われ, 電界強度として求められるが, 信号の観測された伝搬時間から推定される電子密度を用いて磁界強度に換算された。信号が強い場合には衛星塔載の VLF 受信機が飽和するが, その効果を補正しても0.1pTより強い信号はまれであることがわかった。そこで南極サイプル局から送信された信号が, 導波管モードで電離層一大地間を伝搬し, 電離層を透過してホイスラーモード伝搬して衛星に至る伝搬路について理論的に各部の減衰を計算して, 実際に観測された信号強度が理論的にも予測されるものと大きな差のないことが示された。, Absolute intensity of Siple signals observed by the EXOS-B/Siple experiments has been studied. The observations were made using a dipole antenna, and the electric field intensities were measured. By using the ambient electron density deduced from the observed propagation times of the signals, the electric field intensity can be translated to the magnetic field intensity. When the signal intensity was high enough, it was sometimes above the saturation level of the satellite borne VLF receiver. Even if this saturation effect is taken into account, the observed signal levels did not greatly exceed 0.1pT. The absorption or attenuation suffered by Siple signals during propagation in the earth/ionosphere wave guide mode, and through ionospheric and magnetospheric propagation is theoretically estimated. The estimated signal levels allowing for the above attenuation are not too much different from the observed levels. This fact implies that the observed signal intensities were of reasonable value although the estimate of propagation loss is not always certain., 資料番号: SA0166579000},
 pages = {19--34},
 title = {EXOS-B/Siple 波動-粒子相互作用実験における Siple 局信号の絶対強度の解析},
 volume = {5},
 year = {1983}
}