I-radar ye-AESA vs PESAukuqhathanisa izakhiwo ezimbili ze-architectures eziskeniwe ngogesi. Zombili ziqondisa umsebe we-radar ngokulawula isigaba kuzo zonke izakhi ze-antenna, ngaphandle kokujikeleza i-antenna ngomshini kuzo zonke izinguquko ezikhombayo. Umehluko omkhulu ukuthi amandla e-RF akhiqizwa futhi alawulwa kuphi: i-array eskeniwe ngogesi engasebenzi (i-PESA) ngokuvamile isebenzisa indlela yokudlulisela/yokwamukela ephakathi, kuyilapho i-array esebenzayo eskeniwe ngogesi (i-AESA) isabalalisa amamojula amaningi okudlulisa/okwamukela kuyo yonke indawo.
Uyini Umehluko Phakathi Kwe-AESA Ne-PESA Radar?
Umehluko phakathi kwe-radar ye-AESA ne-PESA ngokuyinhloko ukwakheka kwe-RF ngemuva kwe-array. Ithebula elingezansi lifingqa ukuhwebelana kobunjiniyela okuvame ukucatshangelwa ngesikhathi sokuklama nokuhlola uhlelo lwe-radar.
| Ukuqhathanisa | I-PESA Radar | I-AESA Radar |
|---|---|---|
| Ukwakhiwa kwe-RF | Umthombo we-RF onamandla aphezulu ophakathi usatshalaliswa ngenethiwekhi yokuphakelayo kanye nama-phase shifters | Amamojula amaningi okudlulisa/okwamukela asakazwe axhunywe ezintweni ze-antenna noma ama-subaray |
| Ukuqondisa ngomqamelo | Ukulawulwa kwesigaba se-elekthronikhi kulo lonke imbobo | Isigaba se-elekthronikhi kanye nokulawula i-amplitude nge-agility ephezulu ye-waveform |
| Amandla emisebenzi eminingi | Kuncike ekwakhiweni kwesistimu kanye nomhleli wesheduli | Kufanelekile kakhulu ekuhlanganiseni okusheshayo kokusesha, ithrekhi neminye imisebenzi |
| Ukubekezelela amaphutha | Ukwehluleka kwe-Central RF-chain kungaba nomthelela omkhulu ezingeni lesistimu | Ukwehluleka kwemodyuli ngayinye kuvame ukunciphisa ukusebenza kancane kancane kunokumisa uhlu oluphelele |
| Ubunzima | Ngokuvamile amamojula e-RF asebenzayo ambalwa | Ukuphathwa kokushisa okudinga kakhulu, ukulinganiswa, ukulawula kanye nokuhlanganiswa |
Iyini i-PESA Radar?
A uhlu oluskenwe ngogesi olungasebenzisi luthoisebenzisa ukwakheka kwe-transmitter/receiver enamandla amakhulu okwabelwana ngawo. Amandla e-RF adluliselwa kunethiwekhi yokuphakelayo kuya ezintweni eziningi ezikhipha imisebe, kuyilapho ama-phase shifter alawulwa ngogesi elungisa isigaba entweni ngayinye ukuze aqondise umsebe. I-array ngokwayo ibizwa ngokuthi i-passive ngoba i-aperture ayinayo imojuli ephelele yokudlulisa/yokwamukela esebenzayo kuyo yonke into.
Izici Eziyinhloko ze-PESA
- Ukuskena nge-elekthronikhi:umsebe ungaqondiswa kabusha ngokushesha ngaphandle kokuhambisa isakhiwo se-antenna esiphelele.
- Isizukulwane se-RF esimaphakathi:i-transmitter evamile iphakela imbobo ngokusebenzisa izingxenye zokusabalalisa kanye nama-phase shifters.
- Izakhiwo ezisunguliwe:Ubuchwepheshe be-PESA busetshenziswa ezinhlelweni eziningi ze-radar ezisemhlabeni, zasemanzini kanye nasemoyeni.
- Amandla ancike ohlelweni:Umthamo wokulandelela, ukuguquguquka kwesimo samagagasi kanye nesivinini sokuskena kuncike ekwakhiweni kwe-radar ephelele, hhayi nje kuphela ekutheni i-aperture iyi-PESA.
Izinzuzo kanye nokulinganiselwa kwe-PESA
I-PESA ingahlinzeka ngokuqondisa okunembile kwe-elekthronikhi ngamamojula asebenzayo asatshalaliswa ambalwa kune-AESA. Lokhu kunganciphisa ubunzima behadiwe ye-RF. Kodwa-ke, ukulahlekelwa kwenethiwekhi yokuphakelayo kanye nokuthembela kusithumeli esiphakathi kungavimbela ukusebenza kahle kanye nokubekezelela amaphutha. I-PESA akufanele ichazwe ngokuzenzakalelayo njengemvamisa eyodwa noma ikhawulelwe ekuqondisweni okukodwa; lezo zici ziyahlukahluka ngokusetshenziswa kwe-radar.
Iyini i-AESA Radar?
An uhlu oluskenwe ngogesi olusebenzayoiqukethe amamojula amaningi okudlulisa/okwamukela isimo esiqinile asatshalaliswa kulo lonke i-antenna aperture. Imojula ivame ukulawula isici esisodwa se-antenna noma i-subarray encane. Ukulawula kwedijithali kuhlanganisa isigaba, ubukhulu, isikhathi kanye nokuziphatha kwe-waveform ukuze i-radar ikwazi ukuqondisa nokuhlela imisebe ngokuguquguquka okuphezulu.
Izici Eziyinhloko ze-AESA
- Amamojula e-RF asatshalaliswa:Ukukhiqizwa kukagesi kanye nokwamukelwa kwawo kusatshalaliswa kulo lonke imbobo.
- Ukulawulwa kwe-agile beam:Indawo yomugqa kanye nesimo segagasi kungashintshwa ngokushesha ukuze kusekelwe imisebenzi yokusesha, yokulandelela, yokubhala imephu kanye neyokuxhumana lapho uhlelo lwenzelwe bona.
- Ukwehla kobuhle:Ukwehluleka kwamamojula ngamanye kuvame ukubangela ukwehla kancane kancane kokusebenza esikhundleni sokulahlekelwa ngokuphelele kwe-array.
- Ukulinganisa kanye nezidingo zokushisa:Ukuqhathaniswa kwemodyuli, ukususwa kokushisa, ukusatshalaliswa kwamandla kanye nesofthiwe yokulawula kuyizingxenye ezibalulekile zokuhlanganiswa kwe-AESA.
Izinzuzo kanye nokulinganiselwa kwe-AESA
Izakhiwo ze-AESA zinganikeza ukuthembeka okuphezulu, ukulawula okuguquguqukayo kwe-waveform, ukuhlela imisebenzi okusheshayo kanye nekhono eliqinile le-electronic counter-counter measure. Lezi zinzuzo ziza nenani elikhulu lehadiwe, umzamo wokulinganisa, izidingo zokupholisa kanye nezindleko. Ukusebenza kwangempela kuncike kusayizi we-aperture, imvamisa yokusebenza, amandla okukhipha imodyuli, isibalo somsindo, i-bandwidth, isikhala sezinto, i-angle yokuskena kanye nokucutshungulwa kwesignali.
Yikuphi Okungcono: i-AESA noma i-PESA?
Ayikho impendulo evamile. I-AESA ivame ukuthandwa lapho ukusebenza kwemisebenzi eminingi, ukubekezelela amaphutha kanye nokuguquguquka kwesimo samagagasi kuyizinto eziza kuqala. I-PESA ingahlala isebenza lapho umsebenzi odingekayo ungafezwa ngochungechunge lwe-RF oluphakathi kanye nokwakhiwa kwe-module esebenzayo okulula. Onjiniyela kufanele baqhathanise izidingo zesistimu ezilinganiswayo kunokukhetha kuphela ngesifinyezo.
Izimo zokusabalala nazo zibalulekile. Izindlela eziningi, ukuvinjelwa kanye nokunyakaza okuhlobene kungashintsha izinga elitholiwe kanye nokuphindaphindwa kokulinganisa, ngakho-ke ukuhlolwa kwe-radar kufanele kubhekeleukufiphala kwesiteshi esingenantamboeceleni kokwakhiwa kwe-array.
- Chaza imvamisa yokusebenza kanye nomkhawulokudonsa osheshayo.
- Setha izidingo zokumbozwa kokuskena, ukukhuphuka, i-sidelobe kanye ne-polarization.
- Nquma izidingo zesikhathi sokusesha, ukulandelela kanye nemisebenzi eminingi.
- Hlola amandla okudlulisa, ukuzwela kokwamukela kanye nobubanzi obuguqukayo.
- Buyekeza imikhawulo yokushisa, kagesi, yemishini kanye neyemvelo.
- Izindlela zokulinganisa uhlelo, ukuqinisekisa kanye nokulinganisa i-antenna.
Ukusekelwa kwe-Array Antennas kanye nokuhlolwa kwe-RF okuvela ku-RF MISO
I-RF MISO ingumkhiqizi kanye nomhlinzeki we-antenna ye-RF kanye ne-microwave osekela ucwaningo lwe-antenna, ukulinganisa kanye nokuhlanganiswa kwesistimu. Asivezi i-radar ephelele njenge-antenna eyodwa engaphandle kweshelufu. Esikhundleni salokho, onjiniyela bangahlola izingxenye ezifanele futhi bahlole izixazululo ngokuya ngebhendi yemvamisa edingekayo, inzuzo, i-polarization, i-interface kanye ne-mechanical envelope.
Hlola i-RF MISOimikhiqizo ye-antenna yamalungu, ama-antenna ahleliwe, ama-probe e-waveguidefuthiamakhono okuhlola i-antennaUkuze kuhlolwe iphrojekthi, nikeza ibhendi yokusebenza, i-polarization, i-gain target, i-beamwidth, imfuneko yokuskena, isixhumi noma isikhombimsebenzisi se-waveguide, imikhawulo yokufaka kanye nezimo zemvelo.
imibuzo ejwayelekile ukubuzwa
Ingabe ama-radar e-AESA kanye ne-PESA angakwazi ukuqondisa imisebe ngogesi?
Yebo. Zombili izakhiwo zisebenzisa ubudlelwano besigaba esilawulwayo kuzo zonke izakhi ze-array ukuze ziqondise umsebe ngaphandle kokujikeleza ngomshini i-aperture ephelele kuzo zonke iziqondiso zokuskena.
Ingabe i-AESA ingcono njalo kune-PESA?
Cha. I-AESA inikeza izinzuzo ezibalulekile ekusebenzeni kahle, ukuphindaphinda kanye nokusebenza kwemisebenzi eminingi, kodwa futhi yethula ihadiwe esebenzayo kakhulu, ukuphathwa kokushisa kanye nobunzima bokulinganisa. Ukukhetha okulungile kuncike emsebenzini kanye nezidingo zesistimu.
Kungani i-AESA ingaqhubeka nokusebenza ngemva kokwehluleka kwemodyuli?
Ngoba ukukhiqizwa kwe-RF kanye nokwamukelwa kusatshalaliswa kumamojula amaningi. Inani elilinganiselwe lokwehluleka kwamamojula ngokuvamile kunciphisa ukusebenza kwe-aperture okutholakalayo kancane kancane, yize umphumela oqondile uncike ekwakhiweni kwe-array kanye nendawo yephutha.
Yimaphi amapharamitha e-antenna abalulekile ekuhlolweni kwe-radar array?
Amapharamitha abalulekile afaka phakathi imvamisa yokusebenza, i-bandwidth, i-polarization, i-gain, i-beamwidth, izinga le-sidelobe, i-cross-polarization, i-element space, i-scan loss, i-impedance match, ukuphathwa kwamandla kanye ne-electrical and mechanical interface.
Xoxa Ngesidingo Sakho Se-RF Antenna
Xhumana ne-RF MISO ngebanga lakho lokuvama kanye nezidingo zobuchwepheshe zokusekela ukukhetha umkhiqizo.
I-imeyili: info@rf-miso.com|Ucingo:+86 28 82695327 |www.rf-miso.com
Isikhathi sokuthunyelwe: Agasti-07-2023
