Lunar gravity measurements system by orbital determination using three lunar orbiter of SELENE
| Autor: | RSAT/VRADグループ, Iwata, Takahiro, Namiki, Noriyuki, Hanada, Hideo, RSAT/VRAD Group |
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| Jazyk: | japonština |
| Rok vydání: | 2007 |
| Předmět: |
SELENE
orbit determination RSAT 衛星ドップラー測位 小型衛星技術 lunar far side 超長距離干渉計 リレー衛星中継器 重力場 satellite Doppler positioning Relay Satellite Transponder gravitational field very long base interferometry VRAD VLBI Radio Source 月重力 軌道決定 satellite perturbation lunar gravitation 衛星摂動 月の裏側 small satellite technology VLBI用電波源 |
| Zdroj: | 宇宙航空研究開発機構特別資料: 先進的軌道計測・決定技術に関する研究会論文集 = JAXA Special Publication: Proceedings of Advanced Orbit Measurement and Orbit Calculation Technologies. :85-90 |
| ISSN: | 1349-113X |
| Popis: | SELENEによる測月観測のためのリレー衛星中継器(RSAT; Relay Satellite Transponders)は、リレー衛星(Rstar)に搭載されるRSAT-1と主衛星に搭載されるRSAT-2から構成され、主衛星の月の裏側の軌道をRstar経由の4wayドプラ計測により観測する。RSATによる月裏側の重力場分布の観測と、相対VLBI用電波源(VRAD)による重力場低次項の精測により、月重力場モデルの改善を図る。 Global mapping of the lunar gravity field will be conducted by using two small sub-satellites of SELENE (SELenological and Engineering Explorer): the Relay Satellite (Rstar) and the VLBI (Very Large Baseline Interferometry) Radio Satellite (Vstar). Four-way Doppler measurements toward the SELENE Main Orbiter above the lunar far side will be carried out by the Relay Satellite Transponders (RSAT) on Rstar and the Main Orbiter. Phase-delay differential VLBI observations will be performed for multi-frequency carrier waves emitted from the Differential VLBI Radio Sources (VRAD) on Rstar and Vstar. We have executed proto-flight tests and confirmed that instruments and the ground system of RSAT and VRAD have enough performances to improve the accuracy of the lunar gravity field. 資料番号: AA0063223013 レポート番号: JAXA-SP-06-015 |
| Databáze: | OpenAIRE |
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