Uhlalutyo kunye nokucubungula isignali yokuchongwa kwentetho ekude nge-laser

IlezaUhlalutyo kunye nokucubungula isignali yokufumanisa intetho ekude
Ukucaciswa kwengxolo yesiginali: uhlalutyo lwesiginali kunye nokucutshungulwa kokufunyanwa kwentetho ekude nge-laser
Kwindawo emangalisayo yetekhnoloji, ukubonwa kwentetho ekude nge-laser kufana ne-symphony entle, kodwa le symphony ikwanayo "ingxolo" yayo - ingxolo yesignali. Njengabaphulaphuli abangxolayo ngokungalindelekanga kwikonsathi, ingxolo idla ngokuphazamisaukufunyanwa kwentetho nge-laser. Ngokutsho komthombo, ingxolo yokufunyanwa kwesignali yentetho ekude nge-laser inokwahlulwahlulwa ibe yingxolo evezwa sisixhobo sokulinganisa ukungcangcazela nge-laser ngokwaso, ingxolo evezwa zezinye izalathisi kufutshane nendawo ekujoliswe kuyo yokulinganisa ukungcangcazela kunye nengxolo eveliswa kukuphazamiseka kwendalo. Ukufunyanwa kwentetho ekude ekugqibeleni kufuneka kufumaneke imiqondiso yentetho enokubonwa ngabantu okanye oomatshini, kwaye iingxolo ezininzi ezixutyiweyo ezivela kwindawo yangaphandle kunye nenkqubo yokufumanisa ziya kunciphisa ukuvakala kunye nokuqondwa kwemiqondiso yentetho efunyenweyo, kwaye ukusasazwa kwebhendi yefrikhwensi yale ngxolo kwenzeka ngokuyinxenye kunye nokusasazwa kwebhendi yefrikhwensi ephambili yesignali yentetho (malunga ne-300 ~ 3000 Hz). Ayinakuhluzwa nje zizihluzo zemveli, kwaye kufuneka kuqhutyekwe nokucutshungulwa ngakumbi kwemiqondiso yentetho efunyenweyo. Okwangoku, abaphandi bafunda kakhulu ukususwa kwengxolo yebroadband engashukumiyo kunye nengxolo yempembelelo.
Ingxolo yangasemva ye-Broadband idla ngokucutshungulwa ngendlela yokulinganisa i-spectrum yexesha elifutshane, indlela yesithuba esingaphantsi kunye nezinye ii-algorithms zokunciphisa ingxolo ezisekelwe ekucutshungulweni kwesignali, kunye neendlela zokufunda zomatshini zendabuko, iindlela zokufunda nzulu kunye nezinye iiteknoloji zokuphucula intetho ukwahlula imiqondiso yentetho ecocekileyo kwingxolo yangasemva.
Ingxolo yempembelelo yingxolo ye-speckle enokungeniswa yi-dynamic speckle effect xa indawo yethagethi yokufumanisa iphazanyiswa sisibane sokufumanisa senkqubo yokufumanisa ye-LDV. Okwangoku, olu hlobo lwengxolo lususwa kakhulu ngokufumanisa indawo apho isignali inencopho yamandla aphezulu kwaye ithathelwe indawo ngexabiso eliqikelelweyo.
Ukufunyanwa kwelizwi elikude nge-laser kuneethuba zokusetyenziswa kwiindawo ezininzi ezifana nokuthintela, ukujonga iimodi ezininzi, ukufumanisa ukungena, ukukhangela nokusindisa, imakrofoni yelaser, njl. Kunokuqikelelwa ukuba indlela yophando yexesha elizayo yokufunyanwa kwelizwi elikude nge-laser iya kusekelwa ikakhulu (1) ekuphuculeni ukusebenza kokulinganisa kwenkqubo, njengobuntununtunu kunye nomlinganiselo wesignali-kwingxolo, ukuphucula imo yokufumanisa, izinto kunye nolwakhiwo lwenkqubo yokufumanisa; (2) Ukuphucula ukulungelelaniswa kwee-algorithms zokucubungula isignali, ukuze iteknoloji yokufumanisa intetho nge-laser ikwazi ukuzivumelanisa nemigama eyahlukeneyo yokulinganisa, iimeko zokusingqongileyo kunye neethagethi zokulinganisa ukungcangcazela; (3) Ukukhetha okufanelekileyo ngakumbi kwethagethi zokulinganisa ukungcangcazela, kunye nokubuyiselwa kwemiqondiso yentetho ephindaphindayo elinganiswe kwiithagethi ezineempawu ezahlukeneyo zokuphendula ngokuphindaphindekileyo; (4) Ukuphucula ulwakhiwo lwenkqubo, kunye nokuphucula ngakumbi inkqubo yokufumanisa ngokusebenzisa

i-miniaturization, ukuphatheka lula kunye nenkqubo yokuchonga ekrelekrele.

UMZOBO 1 (a) Umzobo wesicwangciso sokubanjwa kwelaser; (b) Umzobo wesicwangciso wenkqubo yokulwa nokubanjwa kwelaser