Ikimenyetso cya trihedral, kizwi kandi nk'icyerekezo cyerekana inguni cyangwa icyuma cya mpandeshatu, ni igikoresho cyoroshye cyane gikoreshwa muri antene na sisitemu ya radar. Igizwe na planari eshatu zigaragaza imiterere ya mpandeshatu ifunze. Iyo umuyagankuba wa elegitoroniki ukubise urumuri rwa trihedrale, bizagaruka inyuma yicyerekezo cyibyabaye, bigire umuraba wagaragajwe uringaniye mubyerekezo ariko bihabanye mugice nicyerekezo cyabaye.

Ibikurikira nintangiriro irambuye kumurongo wa trihedral:

Imiterere n'ihame:

Imfuruka ya mpandeshatu igizwe nibice bitatu byerekana icyerekezo gishingiye kumurongo uhuriweho, ugakora inyabutatu iringaniye. Buri cyerekezo cyerekana indege ni indorerwamo yindege ishobora kwerekana ibyabaye ukurikije amategeko yo gutekereza. Iyo impanuka yibasiye inguni ya trihedral, izagaragazwa na buri cyerekezo cyerekana hanyuma amaherezo ikazunguruka. Bitewe na geometrie yerekana urumuri rwa trihedral, umuraba wagaragajwe ugaragarira mubyerekezo bingana ariko bihabanye kuruta ibyabaye.

Ibiranga na Porogaramu:

1. Irashobora kwerekana ibyabaye inyuma hamwe no kwerekana cyane, gukora ibimenyetso bigaragara. Bitewe nuburinganire bwimiterere yabyo, icyerekezo cyumuraba wagaragajwe uva kumurongo wa trihedrale uhwanye nicyerekezo cyibyabaye ariko bihabanye mugice.

2. Ibi bituma impande eshatu zerekana ibintu byingenzi muri sisitemu ya radar kugirango uzamure echo yerekana intego.

3. Ibi bituma bigira akamaro cyane muri antenne yerekeza hamwe na sisitemu ya radar yo gushakisha no gupima imyanya.

4. Byoroheje kandi byubukungu: Imiterere yibice bitatu byerekana impande zombi biroroshye kandi byoroshye gukora no gushiraho. Ubusanzwe ikozwe mubikoresho byuma, nka aluminium cyangwa umuringa, bifite igiciro gito.

5. Imirima yo gusaba: Imirasire ya Trihedral ikoreshwa cyane muri sisitemu ya radar, itumanaho ridafite insinga, kugendagenda mu ndege, gupima no guhagarara hamwe nizindi nzego. Irashobora gukoreshwa nkibiranga intego, intera, gushakisha icyerekezo na kalibrasi ya antenne, nibindi.

Hano hepfo tuzamenyekanisha ibicuruzwa birambuye ：

Kugirango wongere umurongo wa antenne, igisubizo kiboneye ni ugukoresha urumuri. Kurugero, niba dutangiye na antenne ya wire (reka tuvuge igice cya kabiri cya dipole antole), dushobora gushyira urupapuro rwitwara inyuma yacyo kugirango rwerekeze imirasire yerekeza imbere. Kugirango turusheho kongera icyerekezo, imfuruka irashobora gukoreshwa, nkuko bigaragara ku gishushanyo cya 1. Inguni iri hagati yisahani izaba dogere 90.

Igishushanyo 1. Geometrie yu mfuruka.

Imiterere yimirasire yiyi antenne irashobora kumvikana ukoresheje ibitekerezo byamashusho, hanyuma ukabara ibisubizo ukoresheje inyigisho za array. Kugirango byoroshye gusesengura, tuzakeka ko ibyapa byerekana bitagira ingano murwego. Igishushanyo cya 2 hepfo cyerekana isoko ihwanye nogukwirakwiza, bifite agaciro mukarere imbere yamasahani.

Igishushanyo 2. Inkomoko zingana mumwanya wubusa.

Uruziga rudomo rwerekana antene ziri mu cyiciro hamwe na antene nyirizina; antenne ya x'd out ni dogere 180 zicyiciro kugeza antenne nyirizina.

Dufate ko antenne yumwimerere ifite icyerekezo cyose gitangwa na （）. Hanyuma imishwarara (R) ya "ihwanye na radiator ihwanye" ya shusho ya 2 irashobora kwandikwa nka:

Ibyavuzwe haruguru bikurikira mu buryo butaziguye uhereye ku gishushanyo cya 2 hamwe n’ibisobanuro byerekana (k ni umubare w’umuraba. Igishushanyo cyavuyemo kizagira polarisiyasi imwe na antenne yumwimerere ihagaritse polarize. Ubuyobozi buziyongera kuri 9-12 dB. Ikigereranyo cyavuzwe haruguru gitanga imirima irasa mukarere imbere yamasahani Kuva twakeka ko amasahani atagira iherezo, imirima iri inyuma yisahani ni zeru.

Ubuyobozi buzaba hejuru cyane iyo d ari igice cyumurambararo. Dufashe ko imirasire yumurongo wa 1 ari dipole ngufi hamwe nishusho yatanzwe na (), imirima yuru rubanza irerekanwa mumashusho 3.

Igishushanyo 3. Imiterere ya polar na azimuth yuburyo busanzwe bwimirasire.

Imirasire, inzitizi ninyungu za antenne bizaterwa ninteradya Ishusho 1. Kwinjiza inzitizi yongerewe na ecran mugihe intera ari kimwe cya kabiri cyumuraba; irashobora kugabanuka mukwimura antene hafi yumucyo. UburebureLby'ibigaragaza mu gishushanyo 1 ni 2 * d. Ariko, niba ukurikirana imirasire igenda y-axis kuva antenne, ibi bizagaragazwa niba uburebure byibuze (). Uburebure bw'amasahani bugomba kuba burebure kuruta ibintu bimurika; icyakora kuva antenne yumurongo idasakara neza kuruhande rwa z-axis, iyi parameter ntabwo ari ngombwa cyane.