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Development of new radio science method by using ultra-stable oscillator

Research Project

Project/Area Number 08650456
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 情報通信工学
Research InstitutionInstitute of Space & Astronautical Science

Principal Investigator

OYAMA Ko-ichiro  Institute of Space & Astronautical Science, Planetary Science Div., Professor,, 惑星研究系, 教授 (00013730)

Co-Investigator(Kenkyū-buntansha) MIZUNO Eiichi  Institute of Space & Astronautical Science, Planetary Science div., Research Ass, 共同研究員 (20229701)
KAWASHIMA Nobuki  Kinki University, Department of Science & Engineering, Professor,, 理工学部・数学物理, 教授 (60013702)
Project Period (FY) 1996 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥2,600,000 (Direct Cost: ¥2,600,000)
Fiscal Year 1998: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1997: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1996: ¥1,000,000 (Direct Cost: ¥1,000,000)
KeywordsPlanetary ionosphere / Planetary atmosphere, / Ultra-stable oscillator / Radio Science / Solar conjunction experiment / Mars / 火星中性電気 / 火星電離層 / リモートセンシンク / 火星大気 / リモートセンシング
Research Abstract

The final goal of this reseach is to get the height profile of Mars atmosphere and ionosphere by receiving the S and X band coherent-nonmodulated radio waves originally generated by using an ultra-stable oscillator onboard Japan's first Mars orbiter.
The height profile of the atmosphere and ionosphere allows us to study the dynamics of Mars atmosphere (weather), the interaction between neutral/ionized atmosphere and solar wind, the interaction between ionosphere and thermosphere and effect of dust storm on the both atmospheres. For this purpose, we need 1) to reduce the frequency of the received S and X band signals which are radiated from the spacecraft transmitters down to 20 kHz so that we can more easily calculate the deviation of the frequency, 2) to digitize the down converted video signals in order to conduct computer analysis, 3) detection of the frequency deviation due to the atmosphere/ionosphere of Mars, and 4) convertion of the frequency deviation to the height profile of th … More e atmosphere/ionosphere density.
The grant-in-aid we received allowed us to complete the works listed above as item 1) and 2). Specification of the system to convert the frequency down to 20 kHz and to digitize the signal was discussed by ISAS and a private company in the several meetings and summarized as a final report. The hardware system was manufactured according to the specification and the softwares to store the digitized signal in the memory devices were also completed by the end of 1998.
Unmodulated S band signal from the spacecraft was received in February and the performance of the data acquisition system was confirmed for S band system. X band signal will be received on the 13th and 14th of April and the performance will be examined.
Next goal
Our future targets are the item 3) and 4) and a part of these activities is now under way. In January, 2001, we are going to conduct a solar conjunction experiment, in 2003, we will try to detect the moon photoelectron layer, and finally in 2004, Mars atmosphere/ionosphere will be investigated. Less

Report

(4 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • 1996 Annual Research Report
  • Research Products

    (23 results)

All Other

All Publications (23 results)

  • [Publications] 水野英一、小山孝一郎他6名: "Planet-B電波科学実験計画" 第17回太陽系科学シンポジウム、プロシーディング. (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 水野英一、小山孝一郎他6名: "電波科学の現状と将来" 第5回科学衛星、宇宙科学シンポジウム、プロシーディング. (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 小山孝一郎、水野英一他6名: "電波えんぺい法による火星電離圏、中性大気観測計画" 第100回日本地球電磁気惑星圏学会、プロシーディング. (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 野口克行、今村剛他4名: "火星探査機‘のぞみ'による電波えんぺい実験" 第104回日本地球電磁気惑星圏学会、プロシーディング. (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 徳丸宗利、小島正宣他4名: "火星探査機ビーコン電波を用いた太陽風観測" 平成10年度大気圏シンポジウム. (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Oyama,K.-I.,& E.Mizuno: "Radio occultation experiment in Planet-B mission" 21st International Symposium on Space Technology and Science. (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Oyama,K.-I.,E.Mizuno,et al.: "Radio science in Japan's first Mars spacecraft “NOZOMI"" Abstract presented to URSI, Toronto. (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Oyama,K.-I.,E.Mizuno,et al.: "Radio occultation experiment with Japan's Mars orbiter“NOZOMI"" Submitted to Earth, Planets and Space. (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Mizuno, E., K.-I.Oyama, N.Kawashima, T.Takano, Z.Yamamoto, T.Ichikawa, K.Tsuruda, T.Yamamoto, I.Nakatani: "Planet-B radio science project (in Japanese)" Presented to 17th Solar System Science Symposium, Nov.(1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Oyama, K.-I., E.Mizuno, T.Takano, Z.Yamamoto, K.Tsuruda, T.Yamamoto, I.Nakatani, N.Kawashima: "Radio science, now and future (in Japanese)" Presented to 5th Scientific satellite, Space Observation Symposium, July. (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Oyama, K.-I., E.Mizuno, Z.Yamamoto, K.Tsuruda: "Observation of Mars atmosphere and ionosphere by means of radio occultation technique (in Japanese)" Presented to 100th meeting of Society of Geomagnetism and Earth, Planetary and Space Sciences (SGEPSS), Oct. (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Noguchi, K., T.Imamura, A.Nabatov, K.-I.Oyama, Z.Yamamoto, T.Takano, K.Tsuruda: "Radio occultation experiment by means of "NOZOMI" (in Japanese)" Presented to 104th meeting of Society of Geomagnetism and Earth, Planetary and space Sciences (SGEPSS), Nov.(1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Oyama, K.-I., & E.Mizuno: "Radio occultation experiment in Planet-B mission" 21st International Symposium on Space Technology and Science. (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Tokumaru, M., M.Kojima, K.Fujiki, A.Yakobe, K.-I.Oyama, T.Kondoh: "Solar wind observation by using beacon signal transmitted from Mars orbiter" 10th Atmospheric Science Symposium, March. (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Oyama, K.-I., E.Mizuno, et al.: "Radio science in Japan's first Mars spacecraft "NOZOMI"" Abstract presented to URSI,Toronto. (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Oyama, K.-I., E.Mizuno, et al.: "Radio occulation experiment with Japan's Mars orbiter "NOZOMI"" Submitted to earth, Planets and Space. (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Su,Y.Z.,et al.: "Longitudinal variation of the topside ionosphere at low latitude ; satellite measurements and mathematical modelling" J.Geophys.Res.101. 17191-17205 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Balan,N.,et al.: "Plasmasphere electron temperature studies using satellite observations and a theoretical model" J.Geophys.Res.101. 15323-15330 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Balan,N.,et al.: "Plasmasphere electron temperature profiles and the effects of photoelectron trapping and an equatorial high-altitude heat source" J.Geophys.Res.161. 21689-21696 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Yaw,A.W.,et al.: "Akebono observations of the polar wind and suprathermal auroral ions ; An overview" J.Geomag.Geoelectr.48. 45-46 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Murayama,Y.,et al.: "Cooperative wind observation in the upper mesosphere and lower thermosphere with rockets equipped with foil clouds and ground-based radars" Proceedings of the 20th ISTS. (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Oyama,K.-I.,et al.: "High electron temperature associated with the prereversal enhancement and the equatorial ionosphere" J.Geophys.Res.102. 417-424 (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] Balan,N.,et al.: "Equatorial plasma fountain and its effects over three locations ; Evidence for an additional layer,the F_3 layer" J.Geophys.Res.102. 2047-2056 (1997)

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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