= ᚑᨐ⊒⴫ળ ?ࡊࡠࠫࠚࠢ࠻ 0QCatching radio signals from Jupiter‫ޓޓ‬ᜂᒰᢎຬ‫ޓ‬Vladimir B.Riabovᢧ⮮㇚ᄦ
‒ங଩ⅺ↸↝ᩓඬ̮ӭ⇁ਵⅷ↺
Catching radio signals from Jupiter
᳁ฬ‫ޓޓޓ‬ᰞᐸ໪ᓆ‫ޓ‬ᅏ૓ሶ‫ޓ‬ዊጊᵗᐔ‫ޓ‬Ꮉㄝᓆ‫ޓ‬㜟ᧁ࿻੺‫ޓ‬᫪ᄖஜᄥ‫ޓ‬ᄢ෹ാ㚍‫ޓ‬ਛᎹ᦮ᒾ
name
Hiroaki Sakuraba Yuko Oku Yohei Oyama Akira Kawabe Kenta Morisoto Yuma Ohtomo Tomohiko Nakagawa
⋡⊛࡮᭎ⷐ
Goal and Outline
⋡⊛‫ޓޓ‬
‫ᧁޟ‬ᤊ߆ࠄߩ㔚ᵄାภࠍᝒ߃ࠆ‫ޠ‬
Goal
Catching radio signals from Jupiter
᭎ⷐ‫ޓޓޓ‬0#5# ߇ᓟេߒߡ޿ࠆᧁᤊ᷹ⷰࡊࡠࠫࠚࠢ࠻ߦෳടߒࠕࡦ࠹࠽ߣ࡟ࠪ࡯ࡃࠍ⵾૞ߔࠆ‫ⷰߦࠄߐޕ‬᷹ࠍⴕ޿ฃାߒߚ㔚ᵄߩਛ߆ࠄ
‫ᧁޓޓޓޓޓ‬ᤊ߆ࠄߩ㔚ᵄାภࠍ․ቯߔࠆߎߣߢ‫ᧁޟ‬ᤊ߆ࠄߩ㔚ᵄାภࠍᝒ߃ߚ‫⸽ࠍߣߎ߁޿ߣޠ‬᣿ߔࠆ߽ߩߣߔࠆ‫ޕ‬
Outline
We joined in Radio JOVE project organized by NASA and purchased the kit JOVE project. Then, we observed Jupiter, and caught radio waves.
‫ޓޓޓޓޓޓ‬Finally we proved that the radio waves included signals from Jupiter.
ᵴേౝኈ
Our activities
೨ᦼߩᵴേ
ᓟᦼߩᵴേ
Our activities in the this term
Our activities in the last term
࡮ࡑ࠾ࡘࠕ࡞ߩ⺒⸃
࡮ࠕࡦ࠹࠽࡮࡟ࠪ࡯ࡃߩ⚵ߺ┙ߡ
Reading manual
‫ޓ‬Assembly of antenna and receiver
࡮ᧁᤊ߿㔚ᵄߦߟ޿ߡߩቇ⠌
࡮ାภ⸃ᨆߦᔅⷐߥℂ⺰૕♽ߩ⠌ᓧ
Learning about Jupiter and Radio waves
‫ޓ‬Signal analysis
‫ޓ‬Preparation for observations
᷹ⷰ㧔໧㗴ὐߣߘߩ⸃᳿㧕
࡮໧㗴ὐߩ⸃᳿‫ޓ‬
࡮ାภ⸃ᨆ૞ᬺ
࡮᷹ⷰߩḰ஻
Ordering the material
‫ޓ‬Observations started
‫ޓ‬Solution of problems
‫ޓ‬Learning about signal analysis
࡮⾗᧚ߩ⊒ᵈ
࡮᷹ⷰ㐿ᆎ㧔㧕
Observation (Problem and Resolution㧕
᷹ⷰࠍ㐿ᆎߒߚߎߣߢ᣿ࠄ߆ߦߥߞߚ᭽‫ߥޘ‬໧㗴ࠍฦ⃰ߏߣߦ⸃᳿ߒߚ‫ޕ‬
Each group solved the problem which they found after the observation has started‫ޕ‬
ࠕࡦ࠹࠽⃰
Antenna group
㔚ᵄߩฃାߦ㓙ߒ‫ޔ‬ല₸⊛ߦฃାߩߢ߈ࠆࠕࡦ࠹࠽ߩ⸳⟎ᣇᴺࠍ⺞ᩏ
㔚ᵄࠍฃାߔࠆߎߣ߇ߢ߈ߥ޿
We could not catch the signal.
ߔࠆߎߣߢฃାࠍน⢻ߦߒߚ‫ޕ‬
When we observed Jupiter, Our antenna could not catch radio waves. So, we studied
how to build the antenna so that we could catch.
࡟ࠪ࡯ࡃ⃰
Receiver group
⥄૞ߒߚ࡟ࠪ࡯ࡃ߇േ૞ਇ⦟ࠍ⿠ߎߒߚὑ‫ޔ‬ේ࿃ࠍ⺞ᩏߒᡷༀߒࠃ߁ߣߔࠆ
࡟ࠪ࡯ࡃߩേ૞ਇ⦟
߽ᤨ㑆ߩ㑐ଥ਄ ߿߻ߥߊ 9KP4CFKQ ࡟ࠪ࡯ࡃࠍ૶↪ߒߡ᷹ⷰࠍ⛮⛯ߒߚ‫ޕ‬
Our receiver caused a trouble.
Our receiver caused a trouble. So, we studied and solved the problem, however we had little
time. That is why, we decided to use Win Radio receiver for observations.
ℂ⺰⃰
Theoretical group
ᒰೋ੍ቯߒߡ޿ߚାภ⸃ᨆᣇᴺߢߪᦼᓙߒߚ⚿ᨐ߇ᓧࠄࠇߥ߆ߞߚὑ‫ޔ‬
⁛⥄ߩାภ⸃ᨆᣇᴺ߇ᔅⷐ
We need an original analysis method.
⇣ߥࠆࠕ࡞ࠧ࡝࠭ࡓࠍ↪޿ߚࡊࡠࠣ࡜ࡓߢ⸃ᨆࠍⴕߞߚ‫ޕ‬
We made a program that use an original algorithm for signal analysis. Finally, we could
detect signal by using it.
ᦨ⚳ᚑᨐ
Final results
᷹ⷰߣାภ⸃ᨆߩ⚿ᨐ‫ޔ‬ᚒ‫⋡ߩޘ‬ᮡ‫ᧁޟ‬ᤊ߆ࠄߩ㔚ᵄାภࠍᝒ߃ࠆ‫ߪޠ‬㆐ᚑߢ߈ߚ‫ޕ‬ᓥߞߡߎߩࡊࡠࠫࠚࠢ࠻ߩᚑᨐߪએਅߩㅢࠅߢߔ‫ޕ‬
Finally, we could reach our goal of “Catching radio signals from Jupiter” . So, our finalresults are fallowing .
‫ᧁ࡮ޓޓ‬ᤊ᷹ⷰ↪ߩࠕࡦ࠹࠽࡮࡟ࠪ࡯ࡃࠍ⵾૞
We built the antenna and receiver to be used for Jupiter observation.
‫࡮ޓޓ‬ାภ⸃ᨆߩࠕ࡞ࠧ࡝࠭ࡓࠍ᭴▽
‫࡮ޓޓ‬ାภ⸃ᨆࡊࡠࠣ࡜ࡓࠍ⵾૞
We studied the algorithm for signal analysis.
We made the program used in the analysis.
‫࡮ޓޓ‬ታ㓙ߦ㔚ᵄࠍฃାߒ ߘߩਛ߆ࠄᧁᤊ߆ࠄߩ㔚ᵄାภࠍ․ቯߒߚ
We caught radio waves, and we could find signals from Jupiter in it.
߹ߚ‫ࠍ࠻ࠢࠚࠫࡠࡊ߽ߦઁߩߎޔ‬ㅴ߼ࠆ਄ߢ‫ޔ‬໧㗴߇⊒↢ߒߚ႐วߩኻಣᴺ߿ߘߩ੍㒐╷ߥߤቇࠎߛ߽ߩߪᄙ߆ߞߚߣ޿߃ࠆ‫ޕ‬
On the other hand, we larned several important things.
1) Make check listDGHQTGQDUGTXCVKQP.
2) Check equipment and software in the check list.
3) Record everything during observation. (Make journal)