HALCA

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HALCA (Highly Advanced Laboratory for Communications and Astronomy), nke a makwaara maka aha ọrụ ya bụ VSOP (VLBI Space Observatory Programme), aha koodu MUSES-B (maka nke abụọ nke usoro Mu Space Engineering Spacecraft), ma ọ bụ naanị Haruka (は inac) [1] bụ satellite redio nke Japan nke dị mita 8 n'obosara nke e ji mee ihe maka Very Long Baseline Interferometry (VLIB). Ọ bụ nke mbụ a raara nye na mbara igwe VLBI.

Akụkọ ihe mere eme[dezie | dezie ebe o si]

E debere ya na orbit elliptical nke ukwuu na elu apogee nke 21,400 km na elu perigee nke 560 km, na oge orbital nke ihe dịka awa 6.3.   Usoro a nyere ohere iji foto nke isi mmalite redio nke eluigwe site na satellite na njikọ ya na usoro telivishọn redio nke dị n'ala, nke mere na e nwetara ma ọ dị mma (u,v) ụgbọ elu na mkpebi dị elu.

Ọ bụ ezie na e mere ya iji hụ na bands atọ: 1.6 GHz, 5.0 GHz, na 22 GHz, a chọpụtara na mmetụta nke band 22 GHz emebiwo nke ukwuu mgbe a gbasịrị ya, ma eleghị anya site na mgbagwoju anya nke ọdịdị efere na mbido, si otú a na egbochi nchọpụta na bands 1.6 GHz na 5.0 GHz.      

A malitere HALCA na Febụwarị 1997 site na Kagoshima Space Center, wee mee nchọpụta VSOP ikpeazụ ya n'ọnwa Ọktoba afọ 2003, karịa afọ 3 e buru n'amụma, tupu ọnwụ nke njikwa àgwà. A kwụsịrị ọrụ niile na Nọvemba 2005. [2]

A haziri ọrụ ASTRO-G (VSOP-2), na ụbọchị a tụrụ aro ya na 2012, mana a kagburu ọrụ ahụ na 2011 n'ihi ọnụ ahịa na arịwanye elu na ihe isi ike nke iru ihe mgbaru ọsọ sayensị ya. A na atụ anya na ọ ga enweta mkpebi ruo okpukpu iri karịa na okpukpu iri dị elu karịa onye bu ya ụzọ HALCA.

Nkwụsị nke ASTRO-G hapụrụ ọrụ Spektr-R nke Russia dị ka naanị ụlọ ọrụ VLBI na arụ ọrụ n'oge ahụ. Spektr-R kwụsịrị ịrụ ọrụ na 2019.

Antenna[dezie | dezie ebe o si]

E mere nnukwu antenna 8 mita ka ọ gbasaa na mbara igwe dịka nhazi a gbasaa adabaghị n'ime oghere rọket. Antenna ahụ bụ eriri ígwè nke eriri 6,000. Iji mepụta ọdịdị dị mma, a gbanwere ogologo nke eriri n'azụ antenna. Otu nchegbu [3] na eriri ndị ahụ nwere ike ijikọta. Ntinye nke isi ihe na egbuke egbuke malitere na Febụwarị 27, 1997. [4] mere ihe karịrị awa atọ n'ụbọchị mbụ ma mechaa ya na nkeji iri abụọ n'ụbọchị na esote.

Ihe Ndị Dị Mkpa[dezie | dezie ebe o si]

  • Nnyocha nke hydroxyl masers na pulsars na 1.6 GHz 
  • Nchọpụta nke mgbochi mgbochi maka quasar PKS1519-273 n'etiti HALCA na telivishọn redio nke ụwa
  • Ihe osise nke quasars na Ụyọkọ kpakpando redio wdg site na nyocha VLBI na HALCA na netwọk redio telivishọn ụwa

Ihe ngosi[dezie | dezie ebe o si]

  1. "Haruka" large antenna and space VLBI (「はるか」大型アンテナとスペースVLBI). ISAS JAXA + translate.google.com. Retrieved on 2020-01-24.
  2. VSOP newsletter number 161. Archived from the original on 2020-09-13. Retrieved on 2023-12-24.
  3. Deployment of 8 m effective aperture antenna (有効口径8mアンテナの開発). ISAS JAXA + translate.google.com. Retrieved on 2020-01-24.
  4. Natori's Tears: Successful deployment of large antennas under tension (名取の涙──緊張の中、大型アンテナの展開成功). ISAS JAXA + translate.google.com. Retrieved on 2020-01-24.

Ihe odide[dezie | dezie ebe o si]

 

Njikọ mpụga[dezie | dezie ebe o si]

Àtụ:Japanese space programÀtụ:Orbital launches in 1997