Mai nunin trihedral, wanda kuma aka sani da mai nunin kusurwa ko mai nunin kusurwar kusurwa, na'urar da aka yi niyya ce da aka saba amfani da ita a cikin eriya da tsarin radar. Ya ƙunshi na'urori masu nunin faifai guda uku waɗanda ke samar da rufaffiyar tsari mai kusurwa uku. Lokacin da igiyar wutan lantarki ta taɓa mai nunin trihedral, za a nuna shi baya tare da alkiblar abin da ya faru, yana samar da raƙuman haske wanda ya yi daidai da alkibla amma akasin lokaci zuwa motsin abin da ya faru.

Mai zuwa shine dalla-dalla gabatarwar ga masu haskaka kusurwar trihedral:

Tsari da ka'ida:

Mai nunin kusurwar trihedral ya ƙunshi na'urori masu nunin faifai guda uku waɗanda ke kan madaidaicin wuri guda ɗaya, suna samar da madaidaicin alwatika. Kowane madubin jirgin sama madubi ne wanda zai iya nuna raƙuman ruwa da suka faru bisa ga ka'idar tunani. Lokacin da igiyar igiyar ruwa ta taɓa madaidaicin kusurwar trihedral, kowane mai nunin tsari zai nuna shi kuma a ƙarshe ya samar da raƙuman haske. Saboda ma'auni na ma'auni na trihedral, kalaman da ake nunawa yana nunawa a daidaici amma akasin alkibla fiye da igiyar abin da ya faru.

Fasaloli da Aikace-aikace:

1. Tunani halaye: Trihedral kusurwa reflectors da high tunani halaye a wani mita. Yana iya nuna abin da ya faru ya juya baya tare da babban haske, yana samar da siginar gani a bayyane. Saboda ma'auni na tsarinsa, alkiblar igiyar da aka haska daga mai nunin trihedral daidai yake da alkiblar igiyar abin da ya faru amma akasin haka a lokaci.

2. Sigina mai ƙarfi mai ƙarfi: Tun da lokacin raƙuman raƙuman raƙuman raƙuman ruwa ya saba, lokacin da mai nuna alamar trihedral ya saba da alkiblar igiyar abin da ya faru, siginar da aka nuna zata yi ƙarfi sosai. Wannan yana sa mai nuna kusurwar trihedral ya zama muhimmin aikace-aikace a cikin tsarin radar don haɓaka siginar amsawa na manufa.

3. Jagoranci: Halayen tunani na mai nuna kusurwar kusurwar trihedral sune shugabanci, wato, siginar tunani mai ƙarfi kawai za a haifar da shi a wani kusurwa na musamman. Wannan yana sa ya zama mai fa'ida sosai a cikin eriya na jagora da tsarin radar don ganowa da auna wuraren da ake niyya.

4. Mai sauƙi da kuma tattalin arziki: Tsarin ma'anar ma'anar kusurwar trihedral yana da sauƙi kuma mai sauƙi don samarwa da shigarwa. Yawanci ana yin shi da kayan ƙarfe, kamar aluminum ko tagulla, wanda ke da ƙarancin farashi.

5. Filayen aikace-aikacen: Ƙwararrun kusurwa na Trihedral ana amfani dasu sosai a cikin tsarin radar, sadarwa mara waya, kewayawa jirgin sama, aunawa da matsayi da sauran filayen. Ana iya amfani da shi azaman ganewar manufa, jeri, gano alkibla da eriya daidaitawa, da sauransu.

A ƙasa za mu gabatar da wannan samfurin daki-daki:

Don haɓaka kai tsaye na eriya, ingantaccen bayani shine a yi amfani da mai nuni. Misali, idan muka fara da eriyar waya (bari mu ce eriyar dipole mai rabin igiyar igiyar ruwa), za mu iya sanya takardar gudanarwa a bayansa don kai tsaye da radiation zuwa gaba. Don ƙara haɓaka kai tsaye, ana iya amfani da madaidaicin kusurwa, kamar yadda aka nuna a Hoto 1. Matsakaicin tsakanin faranti zai zama digiri 90.

Hoto 1. Geometry na Reflector Corner.

Ana iya fahimtar tsarin radiyo na wannan eriya ta hanyar amfani da ka'idar hoto, sannan kuma ƙididdige sakamakon ta hanyar ka'idar tsararru. Don sauƙin bincike, za mu ɗauka cewa faranti masu nuni ba su da iyaka. Hoto na 2 da ke ƙasa yana nuna daidaitaccen rarraba tushen tushe, mai inganci ga yankin da ke gaban faranti.

Hoto 2. Daidaitaccen tushe a cikin sarari kyauta.

Da'irar dige-dige suna nuna eriya waɗanda ke cikin lokaci tare da ainihin eriya; eriya ta x'd sun kai digiri 180 daga lokaci zuwa ainihin eriya.

A ɗauka cewa eriya ta asali tana da tsarin ko'ina wanda () ya bayar. Sannan tsarin radiation (R) na "daidai saitin radiators" na Hoto 2 ana iya rubuta shi kamar:

Abin da ke sama ya biyo baya kai tsaye daga Hoto 2 da ka'idar tsararru (k shine lambar igiyar ruwa. Samfurin da zai haifar zai sami polarization iri ɗaya kamar na eriya na tsaye a tsaye. Za a ƙara kai tsaye da 9-12 dB. Ƙididdigar da ke sama tana ba da filayen haske. a cikin yankin da ke gaban faranti.

Jagoranci zai zama mafi girma lokacin da d ya kasance rabin tsawon zango. Da ɗaukan ɓangaren haske na Hoto 1 ɗan gajeren dipole ne tare da tsarin da ( ), an nuna filayen wannan harka a cikin hoto 3.

Hoto 3. Polar da azimuth alamu na al'ada radiation tsarin.

Nisa za a yi tasiri da tsarin radiation, impedance da ribar eriyadna Hoto 1. Ƙaƙƙarfan shigarwa yana ƙaruwa ta hanyar mai nunawa lokacin da tazara ya kasance rabin rabi; ana iya rage shi ta hanyar matsar da eriya kusa da mai gani. TsawonLna masu nuni a cikin Hoto 1 yawanci 2*d ne. Koyaya, idan gano hasken da ke tafiya tare da y-axis daga eriya, wannan zai bayyana idan tsawon ya kasance aƙalla ( ). Tsawon faranti ya kamata ya fi tsayi fiye da abin da ke haskakawa; duk da haka tun da eriya na layi ba sa haskakawa da kyau tare da z-axis, wannan siga ba ta da mahimmanci.