Radio acoustic sounding system

Radar wind profiler na RASS na Alaska North Slope site na Barrow, Alaska

usoro ụda olu redio (RASS) bụ usoro maka ịlele ọnụego ikuku site na iji backscattering nke ebili mmiri redio site na ihu ebili mmiri iji tụọ ọsọ nke ụda na ịdị elu dị iche iche n'elu ala. Nke ^[1] ga-ekwe omume n'ihi na mkpakọ na ụkọ nke ikuku site na ụzarị ụda na-agbanwe njirimara dielectric, na-emepụta ngosipụta nke akara Radar a na-ebute.Site ^[2] ọsọ nke ụda, enwere ike ịgbakọ okpomọkụ nke ikuku na mbara ala.Ogologo elu nke usoro RASS ^[3]-abụkarị mita 750 (2,460 , ọ bụ ezie na a kọọrọ ihe ndị a hụrụ ruo 1.2 km (3,900 ft) na ikuku na-ekpo ọkụ.

Ụkpụrụ

Ụkpụrụ nke ịrụ ọrụ n'azụ RASS bụ nke a: Mgbasa Bragg na-eme mgbe a na-ebufe ike ike (ya bụ, ụda) n'ime oghere nke radar nke na-eme ka ogologo oge nke mgbaàmà ụda na-adaba na ọkara-wavelength nke radar. Dị ka ugboro nke mgbaama ụda dị iche iche, mgbasa mgbama radar na-emewanyewanye nke ọma na-eme mgbe egwuregwu Bragg mere.

Mgbe nke a mere, enwere ike ikpebi Mgbanwe Doppler nke mgbaàmà radar nke Bragg scattering mepụtara, yana ọsọ kwụ ọtọ nke ikuku. Ya mere, enwere ike ịlele ọsọ nke ụda dị ka ọrụ nke ịdị elu, nke enwere ike ịgbakọ profaịlụ okpomọkụ (TV) site na mgbazi kwesịrị ekwesị maka mmegharị ikuku kwụ ọtọ. Okpomọkụ nke ikuku bụ okpomọkụ nke ifufe kpọrọ nkụ ga-enwe ma ọ bụrụ na nrụgide ya na njupụta ya hà ka nke ikuku na-ekpo ọkụ. Dị ka iwu nke mkpịsị aka ukwu, ọsọ kwụ nke ikuku nke 1 m / s (3.3 ft / s) nwere ike ịgbanwe ihe ngosi TV site na 1.6 .

Nhazi

Enwere ike ịgbakwunye RASS na profaịlụ ikuku radar ma ọ bụ na usoro sodar. N'okwu nke mbụ, a ghaghị ịgbakwunye subsystems acoustic dị mkpa na profaịlụ ikuku radar iji mepụta ụda ụda na ịrụ ọrụ nhazi. Mgbe agbakwunyere RASS na profaịlụ radar, a na-edobe isi mmalite ụda olu atọ ma ọ bụ anọ kwụ ọtọ (nke kwekọrọ na ndị na-ekwu okwu stereo dị elu) n'akụkụ antenna wind profiler, na mgbakwunye na sistemụ elektrọnik nke gụnyere mgbama ọkụ ọkụ na mgbama na-emepụta sekit. mbadamba. A na-eji isi iyi egwu naanị iji bunye ụda n'ime oghere kwụ ọtọ nke radar, a na-etinyekarịkwa ya na mkpuchi mkpọtụ iji belata mmetụta ọjọọ nke nwere ike inye ndị agbata obi nọ nso ma ọ bụ ndị ọzọ nọ n'akụkụ akụrụngwa.

Mgbe agbakwunyere RASS na sodar, a na-agbakwunye subsystems radar dị mkpa iji bufee ma nata akara radar yana iji hazie ozi ntụgharị radar. Ebe ọ bụ na a na-enweta data ikuku site na sodar, radar ahụ kwesịrị ịlele naanị n'akụkụ axis kwụ ọtọ. A na-eji ndị na-eme mgbanwe sodar na-ebufe akara ngosi ụda nke na-emepụta Bragg mgbasa ozi nke radar, nke na-enye ohere iji radar tụọ ọsọ nke ụda.

Mkpebi

A na-ekpebi mkpebi kwụ ọtọ nke data RASS site na ogologo pulse (s) nke radar ji. A na-emekarị nnwale RASS na mita 60 ruo 100 (200 ruo 330 ogologo pulse. N'ihi mbelata ikuku nke akara ụda na RASS ugboro nke ndị na-ahụ maka ikuku radar na-eji, ịdị elu nke enwere ike ịnwale na-abụkarị 0.1 ruo 1.5 kilomita (330 ruo 4,920 , dabere na ọnọdụ ikuku (dịka, ọsọ ikuku dị elu na-egbochi RASS ịdị elu ruo narị mita ole na ole n'ihi na-ebupụ akara ụda site na ụzarị radar). ^[4]

Edensibia

↑ Avouris (1995). Environmental Informatics. City: Kluwer Academic. ISBN 0-7923-3445-0.
↑ Raghavan (2003). Radar Meteorology, Atmospheric and Oceanographic Sciences Library. Springer, 442. ISBN 978-1-4020-1604-2.
↑ Kaimal (1994). Atmospheric Boundary Layer Flows. Oxford Oxfordshire: Oxford University Press, 245. ISBN 0-19-506239-6.
↑ Bailey [1987] (February 2000). "Upper-air Monitoring", Meteorological Monitoring Guidance for Regulatory Modeling Applications. Research Triangle Park, NC: United States Environmental Protection Agency, 9–13 to 9-14. EPA-454/R-99-005.

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[1] Avouris (1995). Environmental Informatics. City: Kluwer Academic. ISBN 0-7923-3445-0.

[2] Raghavan (2003). Radar Meteorology, Atmospheric and Oceanographic Sciences Library. Springer, 442. ISBN 978-1-4020-1604-2.

[3] Kaimal (1994). Atmospheric Boundary Layer Flows. Oxford Oxfordshire: Oxford University Press, 245. ISBN 0-19-506239-6.

[4] Bailey [1987] (February 2000). "Upper-air Monitoring", Meteorological Monitoring Guidance for Regulatory Modeling Applications. Research Triangle Park, NC: United States Environmental Protection Agency, 9–13 to 9-14. EPA-454/R-99-005.

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