Chiratidziro chetrihedral, chinozivikanwawo sechiratidziro chekona kana kuti chiratidziro chetriangle, chinhu chinoshandiswa passively target chinowanzoshandiswa mumaantenna nema radar systems. Chine ma planar reflectors matatu anoumba chimiro chetriangle chakavharwa. Kana electromagnetic wave ikarova chiratidziro chetrihedral, chinodzoserwa kumashure nenzira yechiitiko, chichigadzira wave reflection yakaenzana munzira asi yakatarisana ne incident wave.

Zvinotevera ndizvo zvinotsanangurwa zvakadzama nezve trihedral corner reflectors:

Maumbirwo nepfungwa:

Chiratidziro chekona chetrihedral chine magirazi matatu akarongwa akatarisana panzvimbo imwe chete, zvichigadzira triangle yakaenzana. Chiratidziro chega chega cheplane igirazi replane rinogona kuratidza mafungu ezviitiko zvichienderana nemutemo wekuratidzira. Kana wave yezviitiko ikarova chiratidziro chekona chetrihedral, icharatidzwa nechiratidzo chega chega cheplane uye pakupedzisira inogadzira wave reflective. Nekuda kwejometri yechiratidzo chetrihedral, wave reflective inoratidzwa nenzira yakaenzana asi yakapesana newave yezviitiko.

Zvimiro uye Mashandisirwo:

1. Hunhu hwekufungisisa: Magirazi emakona eTrihedral ane hunhu hwekutarisa kwakakwirira pane imwe frequency. Anogona kuratidza wave yechiitiko ichi achidzokera shure nekutarisa kwakakwirira, zvichigadzira chiratidzo chekuratidzira chakajeka. Nekuda kwekuenzana kwechimiro chayo, kutungamira kwemafungu anoonekwa kubva kugirazi retrihedral kwakaenzana nekutungamira kwemafungu echiitiko asi akasiyana muchikamu.

2. Chiratidzo chakasimba chakaratidzwa: Sezvo chikamu chemafungu akaratidzwa chakatarisana, kana chiratidziro chetatu chakatarisana negwara remafungu, chiratidzo chakaratidzwa chichava chakasimba kwazvo. Izvi zvinoita kuti chiratidziro chetatu chakaratidzwa chive chinhu chakakosha mumasisitimu eradar kusimudzira chiratidzo che echo chechinangwa.

3. Kutungamira: Hunhu hwekuratidzira kwetrihedral corner reflector hunoenderana nekwakananga, kureva kuti, chiratidzo chakasimba chekuratidzira chinongogadzirwa chete pakona chaiyo yechiitiko. Izvi zvinoita kuti chibatsire zvikuru muantenna dzekwakananga uye masisitimu eradar pakutsvaga nekuyera nzvimbo dzechinangwa.

4. Zviri nyore uye zvisingadhuri: Chimiro che trihedral corner reflector chiri nyore uye chiri nyore kugadzira nekuisa. Chinowanzo gadzirwa nezvinhu zvesimbi, zvakaita searuminiyamu kana mhangura, izvo zvine mutengo wakaderera.

5. Nzvimbo dzekushandisa: Trihedral corner reflectors dzinoshandiswa zvakanyanya mu radar systems, wireless communications, aviation navigation, measurement and positioning nedzimwe nzvimbo. Dzinogona kushandiswa se target identification, ranking, direction finding uye calibration antenna, nezvimwewo.

Pazasi tichatsanangura chigadzirwa ichi zvakadzama:

Kuti tiwedzere kutungamira kweantenna, mhinduro inonzwisisika ndeyekushandisa reflector. Semuenzaniso, kana tikatanga ne wire antenna (ngatitii half-wave dipole antenna), tinogona kuisa conductive sheet kumashure kwayo kuti itungamire radiation munzira yekumberi. Kuti tiwedzere kutungamira, corner reflector inogona kushandiswa, sezvakaratidzwa muMufananidzo 1. Kona iri pakati pemaplate ichave 90 degrees.

Mufananidzo 1. Geometry yeConer Reflector.

Maitiro emwaranzi eantenna iyi anogona kunzwisiswa nekushandisa dzidziso yemufananidzo, uye wobva waverenga mhedzisiro kuburikidza nedzidziso ye array. Kuti zvive nyore kuongorora, tichafunga kuti ma plates anoratidzira haana muganho muhukuru. Mufananidzo 2 uri pazasi unoratidza kugoverwa kwakaenzana kwesource, kunoshanda kunzvimbo iri pamberi pema plates.

Mufananidzo 2. Manyuko akaenzana ari munzvimbo yakasununguka.

Madenderedzwa ane madotsi anoratidza maantenna ari muchikamu chimwe chete neantenna chaiyo; maantenna e x'd out ari kunze kwemadhigirii zana nemakumi masere kubva muchikamu chimwe chete neantenna chaiyo.

Fungidzira kuti antenna yekutanga ine patani yekutarisa kwese kwese yakapihwa na（）. Wobva waona patani yemwaranzi (R) ye "seti yakaenzana yema radiator" yeMufananidzo 2 inogona kunyorwa seizvi:

Zviri pamusoro zvinotevera zvakananga kubva paMufananidzo 2 uye array theory (k ndiyo nhamba yemafungu. Patani inozobuda ichave ne polarization yakafanana ne antenna yekutanga yakapatsanurwa ne vertical. Kutungamira kuchawedzerwa ne 9-12 dB. Equation iri pamusoro apa inopa minda yakasvibirwa munzvimbo iri pamberi pemaplate. Sezvo takafunga kuti maplate haana muganho, minda iri kuseri kwemaplates ndeye zero.

Kutungamira kuchave kwepamusoro-soro kana d iri hafu yewavelength. Tichifunga kuti chinhu chinopenya cheMufananidzo 1 ipfupi ine pateni yakapihwa na ( ), minda yenyaya iyi inoratidzwa muMufananidzo 3.

Mufananidzo 3. Mapatani ePolar neAzimuth emhando yemwaranzi yakajairika.

Mapatani emwaranzi, impedance uye kuwana kweantenna zvichakanganiswa nedarodMufananidzo 1. Kupindira kwekupinda kunowedzerwa ne reflector kana nzvimbo yacho iri hafu yewavelength; inogona kuderedzwa nekufambisa antenna pedyo ne reflector. Kureba kwayoLyezvinoratidza zviri paMufananidzo 1 zvinowanzova 2*d. Zvisinei, kana uchitevera ray inofamba ney-axis kubva paantenna, izvi zvicharatidzwa kana kureba kuri ( ). Kureba kwemaplate kunofanira kunge kwakareba kupfuura chinhu chinopenya; zvisinei sezvo maantenna akatsetseka asingavhenekeri zvakanaka nez-axis, iyi parameter haina kukosha zvakanyanya.