I-Wiffract isuselwe endleleni yokuhumusha lezi zimpawu ukuze kutholwe imiphetho yezinto kanye nokuma kwazo.
Kukhishwe izindaba zokuthi ithimba le abacwaningi abavela eNyuvesi yaseCalifornia eSanta Barbara usungule indlela yokunquma imiphetho yezinto ezimile ngemuva kodonga oluhlaziya ukuhlanekezelwa kwesignali ye-Wi-Fi.
Indlela, ebizwa I-Wiffract isekelwe ekutholeni izinguquko kusiginali ezenzekayo okufanele ekusebenzisaneni kwamagagasi kagesi ephuma kusidlulisi se-Wi-Fi esinamaphethelo ezinto.
"Ukuthatha izithombe zezindawo ezingaguquki nge-WiFi kuyinselelo enkulu ngenxa yokuntuleka kokunyakaza," kusho uMostofi, uprofesa wobunjiniyela bakagesi namakhompyutha. "Sibe sesithatha indlela ehluke ngokuphelele yokubhekana nale nkinga enzima, sigxile ekulandeleleni imiphetho yezinto." Indlela ehlongozwayo yendlela yokwenza kanye nemiphumela yokuhlola ivele kokuthi Proceedings of the 2023 IEEE National Radar Conference (RadarConf) ngoJuni 21, 2023.
Abacwaningi bayakuchaza lokho lapho igagasi lefrikhwensi yomsakazo (RF) kwe I-Wifi ithola iphoyinti lomkhawulo, ikhiqize ikhoni wemisebe ephumayo eyaziwa ngokuthi "i-Keller's cone" iqondiswa yizimiso ze-geometric diffraction theory (GTD).
Kushiwo ukuthi imodeli yezibalo ye I-Wiffract ingabamba imiphetho yezinto ezimile isebenzisa ithiyori ye-GTD kanye nama-Keller cones ahambisanayo. Uma isikhomba “amaphoyinti onqenqema wokuzethemba okuphezulu,” i-Wiffract ingakwazi ukwakha kabusha umumo wezinto ngenkathi ithuthukisa imephu yonqenqema engumphumela isebenzisa amasu athuthukile okubona kwekhompyutha.
Izisetshenziswa zezibalo ezisetshenziswa abacwaningi zisekelwe kumbono wejiyomethri we-diffraction GTD, echaza imiphumela eyenzeka lapho igagasi kazibuthe kagesi lizungeza izithiyo.
Idemo ye-Wiffract
Ku-GTD, amandla kucatshangwa ukuthi asabalalisa emisebe futhi inkambu yegagasi ithathwa njengesamba sezinkambu zohlobo lwe-ray. Ngaphezu kwesigameko, imisebe ephindiwe futhi ebonisiwe, Ithiyori ye-GDT yethula umqondo wemisebe ehlukanisiwe, okwenzeka lapho umbani ushaya unqenqema olucijile noma iphuzu ebusweni bento.
Uma i-beam ifika onqenqemeni, imisebe ehlukanisiwe yakha ubuso bekhoni ye-Keller e-engeli yokuvula yayo ilingana ne-engeli ephindwe kabili phakathi kwe-beam yesigameko kanye ne-tangent ebusweni bonqenqema endaweni ye-diffraction. Uma umsebe wesigameko uncikene ne-tangent onqenqemeni, ikhoni iba indiza, futhi uma ishaya ichopho le-vertex, imisebe ehlukanisiwe iyahlukana ngokufanayo kuzo zonke izinhlangothi.
"Lapho igagasi elinikeziwe lifika onqenqemeni, kuvela ikhoni lemisebe ephumayo ngokwe-Keller's Geometric Theory of Diffraction (GTD), ebizwa nge-Keller cone," kuchaza uMostofi. Abacwaningi baqaphela ukuthi lokhu kusebenzisana akugcini nje emiphethweni ebukhali ebonakalayo, kodwa kusebenza kusethi ebanzi yendawo enokugoba okuncane ngokwanele.
“Ngokuya ngokuma konqenqema, ikhoni ishiya iminonjana ehlukene (okungukuthi, izigaba eziyindilinga) endaweni ethile eyamukelayo. "Sibe sesisungula uhlaka lwezibalo olusebenzisa lezi zindlela ezinamathelene njengamasiginesha ukuze siqonde umumo wamaphethelo, ngaleyo ndlela sakhe imephu esemaphethelweni yendawo yesehlakalo," kuqhubeka uMostofi.
Indlela ehlongozwayo ayidingi ukuqeqeshwa kokuqala kwenethiwekhi ye-neural futhi akukhawulelwe ekuboneni kuphela izinto ezimbozwe ngesikhathi sokufunda komshini. Esikhundleni salokho, inethiwekhi ye-neural izama ukwenza kabusha amakhonsathi ezinto ezingalawuleki ngokulandela imiphetho yazo.
Isihlaziyi sesignali esilingisa isethi yamamukeli we-Wi-Fi icabangela izinguquko zamandla esignali ezindaweni ezingazodwana endizeni enezinhlangothi ezimbili. Kusignali efinyelela kumhlaziyi, inethiwekhi ye-neural ithola ukuhlanekezelwa kwesici yamagagasi ahlukanisiwe akhiqizwa lapho igagasi licindezela onqenqemeni futhi iphinda idale indawo yamaphethelo.
Njengokukhombisa indlela, abacwaningi bahlele ukutholwa kwezinhlamvu ezihlekisayo zezinhlamvu zesiNgisi ezibekwe ngemuva kodonga, besebenzisa ama-transmitters amasignali angenantambo asebenza kumafrikhwensi e-Wi-Fi.
Ukuze uthole isignali, kwakhiwe ikalishi lokuskena elinezamukeli ze-Wi-Fi ezimbalwa ezihamba phambili naphambili ezilingisa isethi yezimpondo. Kumele kuqashelwe ukuthi le ndlela ayisebenzi nje kuphela ezintweni ezinemiphetho ebukhali ebonakalayo, kodwa futhi iyasebenza ezintweni ezinezinga elincane lokugoba kwendawo.
ekugcineni uma ukhona unentshisekelo yokwazi okwengeziwe ngayo, ungabheka imininingwane kufayela le- isixhumanisi esilandelayo.