Doppler umphumela

Umthelela Doppler ingenye yezinto esiphawuleka kakhulu ekutadisheni izakhiwo wave imihlola. isimo sawo jikelele uthola lokho namuhla lusekelwe lo mphumela kukhona izinkulungwane kumadivayisi ezahlukene kuyo yonke imikhakha yomsebenzi womuntu. Lo mkhuba, okuyinto ke ogama lakhe behlonipha owathola yayo, kwatholakala i-physics Austrian Christian Doppler kudala njengoba maphakathi nekhulu le-nesishiyagalolunye. Doppler izilinganiso olwenziwa izakhiwo amagagasi yamukelwa nesamukeli umthombo nezinqe umile.

Uma sicabanga umphumela Doppler ifomu elula, kufanele kuphawulwe ukuthi mkhuba ngokomzimba uchaza ushintsho imvamisa isignali maqondana nenani ukunyakaza umthombo isiginali kusuka umamukeli ukuthi olitholayo. Ngokwesibonelo, igagasi ukuthi livela emthonjeni abanye, futhi lapho has a imvamisa ezithile esinqunyiwe, ngeke yamukelwe owamukelayo isivele imvamisa ezahlukene uma ngesikhathi ndima yayo omthombo umamukeli washintsha isikhundla isihlobo kwabo komunye nomunye, ukuthi idluliswa. Kulesi sibalo liyokhula noma imvamisa ukwehla incike isiqondiso lapho umthombo ehamba ngokuhlobene umamukeli. Banikezwe umphumela Doppler, asikwazi zisho ukuthi uma isamukeli asuka umthombo - ukubaluleka imvamisa wave incipha. Uma umamukeli kuyeza igagasi umthombo emisebeni ke esilinganisweni imvamisa ukwanda wave. Ngenxa yalokho, kusukela le mithetho kuphothulwe ngokuthi uma umthombo amagagasi futhi isamukeli ngesikhathi ndima yayo awushintshanga isikhundla salo ke ukubaluleka imvamisa wave izohlala injalo.

Okubalulekile futhi omunye isigatshana okuyinto ephawula umphumela Doppler. Le mpahla kuyinto ngezinga elithile kuba ubudlela-ndawonye buphikisana nemithetho kwezinto. Iqiniso lokuthi ushintsho imvamisa uzimisele kuphela ngokususa noma cha odlala nomthombo ngemisebe futhi waphinde yokuthi ihamba. Izilinganiso baye babonisa ukuthi shift imvamisa kunqunywa iyiphi into ezithathekayo, le esikufezile, ezincane kwehlukana owamukelayo futhi umthombo noma ukuchema kuzo velocities ukunyakaza Isivinini wave. Empeleni, ezimweni lapho siwukubonakaliswa umphumela Doppler, awaphikisani nemfundiso wokuhlobana kwezinto alibonisi up, ngoba lapha kubalulekile hhayi ukunyakaza isihlobo owamukelayo futhi umthombo kanye nohlobo ukunyakaza amagagasi e i osebenzelana nokunwebeka lapho ihamba.

Okunjalo izakhiwo Doppler umphumela ububonisa wafanisa acoustic amagagasi imvelaphi, futhi amagagasi kagesi, ngaphandle ukuthi esimweni amagagasi kagesi imvamisa offset mkhuba akuxhomekile umthombo noma owamukelayo uhamba.

Kanjani lo mphumela kunalokho abstract, bheka, Nokho, ilula ngokwanele. Ngokwesibonelo, umphumela Doppler e umsindo kungabonwa, ukuba ngqo - ukuzwa, ngesikhathi lapho simi sezimoto, uzwa Ukudlula inhlabamkhosi yizinqola eziphuthumayo. Ngokuqinisekile, wonke kuphawulwe ukuthi uma imoto enjalo kuyeza - umsindo siren umsindo ngenye yezindlela okusezingeni eliphezulu, futhi lapho imoto fumana you - umsindo inhlabamkhosi ngezansi. It nje kuqinisekisa ushintsho abakuzuzile imvamisa isignali acoustic.

Omkhulu ukubaluleka Doppler imvamisa udlala radar, maqondana amagagasi kagesi. Ngesisekelo lo msebenzi umphumela zonke radars namanye amadivayisi ukuthola izinto ezihambayo emasimini ezihlukahlukene ingxenye yomsebenzi womuntu.

Amandla ayo asetshenziswa nobuchwepheshe ekutholweni ukugeleza kwegazi, njengoba waziwa kabanzi, inqubo efana Doppler echocardiography. Ngesisekelo nomphumela Doppler, wakha ama-apharathasi navigation izitsha kwamanzi, kanye ukusebenzisa kwayo ababikezeli bezulu isilinganiso amandla umoya nesivinini ukunyakaza nongqimba lwamafu.

Ngisho kwezokuhlolwa kwezinkanyezi nesayensi izilinganiso yakhe usebenzisa umphumela Doppler. Ngakho, i-shift kunazo zonke kwezingu-spectra lezinto ezihlukahlukene yasezulwini, kunqunywa isilinganiso sabo ukunyakaza emkhathini, ngokukhethekile, ngokunembile ngesisekelo lo mphumela iye hypothesized ukunweba indawo yonke.