講演名 2002/10/4
A Tennis-court-sized Reflector for Communication Satellites : Use for Engineering Test Satellite VIII
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抄録(和)
抄録(英) Large deployable reflector (LDR) is state-of-the-arts technology in communication satellites to achieve some satellite communication services. Government agencies of Japan are planning some experiments on communication and broadcasting services via satellites. Engineering Test Satellite VIII (ETS-VIII) will be launched in 2004, and demonstrated satellite voice communication by using cellular phones and high-quality audio broadcasting. An antenna system is a combination of the LDR and active-phased-array feeders. The LDR, 20 m along its major axis, based on a modular-mesh concept in which structure consists of several basic modules has extensibility. In order to develop the LDR, the design points on surface accuracy and electrical performance are evaluated. A surface error caused by the assembly of multiple modules was evaluated. The surface accuracy measured data compared with analysis results. Hence, the surface of the LDR was accurate enough within the system requirement. The electrical performance, especially, passive intermodulation (PIM) was measured by using a 7-module reflector. The measured PIM is so small that the LDR is satisfied the system requirements.
キーワード(和)
キーワード(英) Large deployable reflector / LDR / Engineering Test Satellite VIII / Reflector / Deployment / PIM
資料番号 SAT2002-84
発行日

研究会情報
研究会 SAT
開催期間 2002/10/4(から1日開催)
開催地(和)
開催地(英)
テーマ(和)
テーマ(英)
委員長氏名(和)
委員長氏名(英)
副委員長氏名(和)
副委員長氏名(英)
幹事氏名(和)
幹事氏名(英)
幹事補佐氏名(和)
幹事補佐氏名(英)

講演論文情報詳細
申込み研究会 Satellite Telecommunications (SAT)
本文の言語 ENG
タイトル(和)
サブタイトル(和)
タイトル(英) A Tennis-court-sized Reflector for Communication Satellites : Use for Engineering Test Satellite VIII
サブタイトル(和)
キーワード(1)(和/英) / Large deployable reflector
第 1 著者 氏名(和/英) / Akihiro MIYASAKA
第 1 著者 所属(和/英)
National Space Development Agency of JAPAN
発表年月日 2002/10/4
資料番号 SAT2002-84
巻番号(vol) vol.102
号番号(no) 360
ページ範囲 pp.-
ページ数 5
発行日