I-trihedral reflector, eyaziwa nangokuthi i-reflector yekhona noma i-triangular reflector, iyithuluzi eliqondiwe ngokungenzi lutho elivame ukusetshenziswa kuma-antenna namasistimu e-radar.Iqukethe izibonisi ezintathu zepulani ezakha isakhiwo esivaliwe esingunxantathu.Uma i-electromagnetic wave ishaya isibonisi se-trihedral, izoboniswa emuva eduze nendawo yesigameko, yakhe igagasi elibonakalayo elilingana nendawo kodwa eliphambene nesigaba segagasi lesigameko.

Okulandelayo yisingeniso esiningiliziwe sezibonisi zamakhona we-trihedral:

Isakhiwo nomgomo:

Isibonisi sekhona elingunxantathu siqukethe izibonisi ezintathu zepulani ezigxile endaweni evamile yokuhlangana, okwenza unxantathu olinganayo.Isibonisi ngasinye sendiza yisibuko sendiza esingabonisa amagagasi esigameko ngokuvumelana nomthetho wokubonisa.Uma igagasi lesigameko lishaya isibonisi sekhona le-trihedral, sizoboniswa isibonisi ngasinye sepulani futhi ekugcineni sakhe igagasi elibonakalayo.Ngenxa yejometri yesibonisi se-trihedral, igagasi elibonisiwe liboniswa ngendlela elinganayo kodwa ephambene kunegagasi lesigameko.

Izici Nezicelo:

1. Izici zokubonisa: Izibonisi zekhona lezintathu zinezici zokubonisa eziphezulu ngefrikhwensi ethile.Ingakhombisa igagasi lesigameko libuyele emuva ngokubonakala okuphezulu, kwakhe isignali esobala yokubonisa.Ngenxa yokulinganisa kwesakhiwo sayo, isiqondiso segagasi elibonisiwe kusukela kusibonisi se-trihedral silingana nesiqondiso segagasi lesigameko kodwa ngokuphambene nesigaba.

2. Isignali eqinile ebonisiwe: Njengoba isigaba segagasi elibonisiwe siphambene, lapho isibonisi se-trihedral siphambene nesiqondiso segagasi lesigameko, isignali ebonisiwe izoba namandla kakhulu.Lokhu kwenza isibonisi sekhona le-trihedral sibe isicelo esibalulekile kumasistimu e-radar ukuze kuthuthukiswe isignali ye-echo yethagethi.

3. Ukuqondisa ngqo: Izici zokubonisa zesibonisi sekhona elingunxantathu ziqondise, okungukuthi, isignali eqinile izokwenziwa kuphela nge-engeli ethile yesigameko.Lokhu kuyenza isebenziseke kakhulu kuma-antenna aqondisayo kanye nezinhlelo ze-radar zokuthola nokulinganisa izindawo eziqondiwe.

4. Ilula futhi iyonga: Isakhiwo sekhoneni le-trihedral reflector silula futhi kulula ukusikhiqiza nokusifaka.Ngokuvamile kwenziwa ngezinto zensimbi, njenge-aluminium noma ithusi, enezindleko eziphansi.

5. Izinkambu zokufaka isicelo: Izibonisi zekhoneni le-Trihedral zisetshenziswa kakhulu ezinhlelweni ze-radar, ukuxhumana okungenantambo, ukuzulazula kwezindiza, ukulinganisa nokubeka indawo kanye neminye imikhakha.Ingasetshenziswa njengokuhlonza okuhlosiwe, ukuhluka, ukuthola isiqondiso kanye ne-antenna yokulinganisa, njll.

Ngezansi sizokwethula lo mkhiqizo ngokuningiliziwe:

Ukwandisa ukuqondisa kwe-antenna, isixazululo esinembile ukusebenzisa isibonisi.Isibonelo, uma siqala nge-antenna yocingo (ivumela ukuthi sithi i-dipole antenna ye-half-wave), singabeka ishidi le-conductive ngemuva kwayo ukuze siqondise imisebe eya phambili.Ukuze uqhubeke nokwandisa ukuqondisa, i-reflector yekona ingasetshenziswa, njengoba kuboniswe kuMfanekiso 1. I-angle phakathi kwamapuleti izoba yi-90 degrees.

Umfanekiso 1. Ijometri ye-Corner Reflector.

Iphethini yemisebe yale antenna ingaqondwa ngokusebenzisa ithiyori yesithombe, bese kubalwa umphumela kusetshenziswa ithiyori yohlu.Ukuze kube lula ukuhlaziya, sizocabanga ukuthi amapuleti abonisayo awapheli ngobubanzi.Umfanekiso 2 ngezansi ubonisa ukusatshalaliswa komthombo okulinganako, okuvumelekile endaweni ephambi kwamapuleti.

Umfanekiso 2. Imithombo elinganayo endaweni yamahhala.

Imibuthano enamachashazi ikhombisa izimpondo ezisesigabeni ezinothi lwangempela;ama-antenna angama-x'd out angama-degree angu-180 ngaphandle kwesigaba ukuya othini lwangempela.

Cabanga ukuthi i-antenna yoqobo inephethini ye-omnidirectional enikezwe ngu-().Khona-ke iphethini yemisebe (R) "yesethi elinganayo yama-radiator" yoMfanekiso 2 ingabhalwa ngokuthi:

Okungenhla kulandela ngokuqondile kusukela kuMfanekiso 2 kanye nethiyori yamalungu afanayo (k inombolo yegagasi. Iphethini ewumphumela izoba ne-polarization efanayo ne-antenna yasekuqaleni ehlukanisiwe eqondile. Ukuqondisa kuzokwenyuswa ngo-9-12 dB. Isibalo esingenhla sinika izinkambu ezikhanyayo. esifundeni esiphambi kwamapuleti Njengoba sasithatha ngokuthi amapuleti awapheli, amasimu angemuva kwamapuleti ayiziro.

Ukuqondisa kuzoba okuphezulu kakhulu uma u-d engu-half-wavelength.Uma sicabanga ukuthi into ekhipha imisebe yoMfanekiso 1 iyi-dipole emfushane enephethini enikezwe ngu- ( ), izinkambu zaleli cala ziboniswa kuMfanekiso 3.

Umfanekiso 3. Amaphethini we-polar ne-azimuth wephethini yemisebe evamile.

Iphethini yemisebe, i-impedance kanye nenzuzo ye-antenna izothonywa yibangadof Figure 1. I-impedance yokufaka inyuswa isibonisi uma isikhala siwuhhafu we-wavelength;ingancishiswa ngokusondeza uthi oluseduze nesibonisi.UbudeLkwezibonisi kuMfanekiso 1 ngokuvamile ziyi-2*d.Kodwa-ke, uma ukulandelela umsebe ohamba nge-eksisi ka-y kusuka othi, lokhu kuzobonakala uma ubude buyi- ( ).Ukuphakama kwamapuleti kufanele kube kude kunesici esikhipha imisebe;kodwa njengoba izimpondo zomugqa zingakhanyi kahle ku-axis engu-z, le pharamitha ayibalulekile kakhulu.