JAXA Repository / AIREX 未来へ続く、宙(そら)への英知

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Other TitleDevelopment of simulation technology for analysis of microwave beam propagation from an orbit of space solar power system (SSPS) to the ground
Author(jpn)犬塚 博誠; 佐竹 宏次; 茂中 俊明; 加藤 博; 高山 健
Author(eng)Inuzuka, Hirosei; Satake, Koji; Monaka, Toshiaki; Kato, Hiroshi; Takayama, Ken
Author Affiliation(jpn)三菱重工業 先進技術研究センター; 三菱重工業 先進技術研究センター; 三菱重工業 先進技術研究センター; ダイナス; 高エネルギー加速器研究機構
Author Affiliation(eng)Mitsubishi Heavy Industries Ltd. Advanced Technology Research Center; Mitsubishi Heavy Industries Ltd. Advanced Technology Research Center; Mitsubishi Heavy Industries Ltd. Advanced Technology Research Center; Dynus Co. Ltd.; High Energy Accelerator Research Organization
Issue Date2004-06
PublisherInstitute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)
Publication title第23回宇宙エネルギーシンポジウム 平成15年度
The 23rd ISAS Space Energy Symposium March 9, 2004
Start page119
End page123
Publication date2004-06
AbstractThe space solar power system (SSPS) is required for clean power source in the near future. The SSPS consists of not only conventional spacecraft technologies but also newly developed technologies. In development of the SSPS the new technologies should be inspected both on orbit experiment and on the terrestrial experiment. However the experiment cost on orbit is high, attention should be paid to developing simulation method as alternative to experiment on orbit to cut the cost down. In this paper described is development of a novel simulation method for analyzing microwave beam propagation characteristics from an SSPS orbit to ground beam detection point. Several studies for microwave beam propagation in space plasma important for SSPS had been done. These studies were focused on the nonlinear effects appeared in the extremely high power microwave propagation in the space plasma. In contrast with these studies, overall propagation analysis was focused on from the orbit to the ground. The simulation method developed is based on the beam propagation method (BPM) on a conventional PC platform. To overcome the increasing calculation error in long distance propagation with beam size expansion, alternative direction implicit method (ADI) is introduced. The databases IRI, COSPER, and IGRF are used to take account of space environment (ionosphere) and the atmosphere on the microwave propagation path. Simulated are microwave beam propagation characteristics of 5 m of beam radius from altitude 570 km through ionosphere and atmosphere. Good agreement was obtained with the theoretical expectation but the simulation took 6 days CPU time on PC platform. As the code with ADI method suited for parallel computing, the calculation time could be shortened to 2 days with 4 CPU through 570 km propagation.
Keywordssolar power satellite; microwave power beaming; computer program; numerical simulation; space plasma; electromagnetic wave transmission; Earth ionosphere; aerospace environment; space solar power system; 太陽発電衛星; マイクロ波送電; 計算機プログラム; 数値シミュレーション; 宇宙プラズマ; 電磁波伝播; 地球電離層; 航空宇宙環境; 宇宙太陽発電システム
Document TypeConference Paper
JAXA Categoryシンポジウム・研究会

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