Radar ya AESA vs PESAndi kufananiza kwa mapangidwe awiri a radar scanned architectures. Onse awiri amawongolera radar beam powongolera gawo kudutsa zinthu zingapo za antenna, popanda kuzunguliza antenna mwamakina pakusintha kulikonse kolozera. Kusiyana kwakukulu ndi komwe mphamvu ya RF imapangidwa ndikuwongoleredwa: passive electronically scanned array (PESA) nthawi zambiri imagwiritsa ntchito njira yolumikizira/yolandirira pakati, pomwe active electronically scanned array (AESA) imagawa ma transmit/receiver modules ambiri kudutsa aperture.
Kodi pali kusiyana kotani pakati pa AESA ndi PESA Radar?
Kusiyana pakati pa radar ya AESA ndi PESA makamaka ndi kapangidwe ka RF kumbuyo kwa gulu. Gome ili pansipa likufotokoza mwachidule za kusinthana kwa uinjiniya komwe kumaganiziridwa kwambiri popanga ndi kuwunika makina a radar.
| Kuyerekeza | Rada ya PESA | Rada ya AESA |
|---|---|---|
| Kapangidwe ka RF | Gwero lamphamvu la RF lomwe limagawidwa pakati kudzera pa netiweki yodyetsa ndi ma shifter a magawo | Ma module ambiri otumizira/kulandira omwe amagawidwa olumikizidwa ku zinthu za antenna kapena ma subarray |
| Chiwongolero cha mtengo | Kuwongolera gawo lamagetsi kudutsa m'chitseko | Gawo lamagetsi ndi kuwongolera ma amplitude ndi mphamvu yayikulu ya mafunde |
| Mphamvu ya ntchito zambiri | Zimadalira kapangidwe ka dongosolo ndi wokonza nthawi | Yoyenera kwambiri pofufuza mwachangu, kutsata ndi ntchito zina |
| Kulekerera zolakwika | Kulephera kwa unyolo wapakati pa RF kungayambitse mavuto aakulu pamlingo wa dongosolo | Kulephera kwa module ya munthu payekha nthawi zambiri kumachepetsa magwiridwe antchito pang'onopang'ono m'malo moletsa gulu lonse |
| Kuvuta | Kawirikawiri ma module a RF ogwira ntchito ochepa | Kuwongolera kutentha, kuwongolera, kulamulira ndi kuphatikiza zinthu zofunika kwambiri |
Kodi Radar ya PESA ndi chiyani?
A gulu losasinthika pakompyutaimagwiritsa ntchito kapangidwe ka transmitter/receiver kamphamvu kwambiri. Mphamvu ya RF imayendetsedwa kudzera mu netiweki yotumizira ku zinthu zambiri zowala, pomwe ma phase shifter olamulidwa ndi magetsi amasintha gawo pa chinthu chilichonse kuti ayendetse kuwala. Gulu lokha limatchedwa passive chifukwa kutsegula kulibe gawo lonse logwira ntchito lotumizira/lolandira pa chinthu chilichonse.
Makhalidwe Ofunika a PESA
- Kusanthula kwamagetsi:mtandawo ukhoza kusunthidwa mofulumira popanda kusuntha kapangidwe ka antenna yonse.
- Kupanga kwa RF kwapakati:chotumizira chofala chimadyetsa kutsegula kudzera mu zigawo zogawa ndi zosinthira magawo.
- Kapangidwe ka zomangamanga:Ukadaulo wa PESA umagwiritsidwa ntchito m'makina ambiri a radar omwe amagwiritsidwa ntchito padziko lapansi, panyanja komanso m'ndege.
- Mphamvu yodalira dongosolo:Mphamvu yotsatirira, kusinthasintha kwa mafunde ndi liwiro la kusanthula zimadalira kapangidwe ka radar yonse, osati kokha ngati malo otseguka ndi a PESA.
Ubwino ndi Zofooka za PESA
PESA ikhoza kupereka chiwongolero cholondola chamagetsi chokhala ndi ma module ochepa ogawa kuposa AESA. Izi zitha kuchepetsa zovuta zina za RF hardware. Komabe, kutayika kwa feed-network ndi kudalira pa transmitter yapakati kumatha kuletsa magwiridwe antchito ndi kulekerera zolakwika. PESA siyenera kufotokozedwa yokha ngati single-frequency kapena yocheperako pa cholinga chimodzi; makhalidwe amenewo amasiyana malinga ndi kukhazikitsa kwa radar.
Kodi Radar ya AESA N'chiyani?
An gulu logwira ntchito losanthulidwa pakompyutaIli ndi ma module ambiri otumizira/kulandira omwe ali ndi solid-state omwe amagawidwa kudutsa antenna aperture. Module nthawi zambiri imalamulira chinthu chimodzi cha antenna kapena subarray yaying'ono. Kuwongolera kwa digito kumawongolera gawo, kukula, nthawi ndi mawonekedwe a mafunde kotero kuti radar ikhoza kuwongolera ndikukonza nthawi ya kuwala ndi mphamvu yapamwamba.
Makhalidwe Ofunika a AESA
- Ma module a RF ogawidwa:Kupanga ndi kulandira magetsi kumagawidwa pa malo otseguka.
- Kulamulira kwa dayamondi yoyenda pang'onopang'ono:Malo a beam ndi ma waveform zimatha kusinthidwa mwachangu kuti zithandizire ntchito zofufuzira, kutsatira, kupanga mapu ndi kulumikizana komwe dongosololi lapangidwira iwo.
- Kuwonongeka kokongola:Kulephera kwa ma module payokha nthawi zambiri kumayambitsa kuchepa pang'onopang'ono kwa magwiridwe antchito m'malo motaya kwathunthu gulu.
- Kuwerengera ndi kufunika kwa kutentha:Kufananiza ma module, kuchotsa kutentha, kugawa mphamvu ndi mapulogalamu owongolera ndi zinthu zofunika kwambiri pakuphatikizana kwa AESA.
Ubwino ndi Zofooka za AESA
Mapangidwe a AESA amatha kupereka kudalirika kwakukulu, kuwongolera ma waveform osinthasintha, kukonza nthawi mwachangu komanso kuthekera kwamphamvu kwa counter-counter measurement. Mapindu awa amabwera ndi kuchuluka kwa zida zamagetsi, khama lowerengera, zofunikira pakuziziritsa ndi mtengo. Kugwira ntchito kwenikweni kumadalira kukula kwa aperture, kuchuluka kwa ntchito, mphamvu yotulutsa ya module, kuchuluka kwa phokoso, bandwidth, malo olumikizirana, ngodya yojambulira ndi kukonza kwa chizindikiro.
Ndi chiyani chabwino: AESA kapena PESA?
Palibe yankho lachindunji. AESA nthawi zambiri imakondedwa pamene ntchito zambiri, kulekerera zolakwika ndi kusinthasintha kwa mawonekedwe a mafunde ndizofunika kwambiri. PESA ikhoza kukhalabe yothandiza pamene ntchito yofunikira ikhoza kukwaniritsidwa ndi unyolo wa RF wapakati komanso kapangidwe kosavuta ka active-module. Mainjiniya ayenera kuyerekeza zofunikira zoyezeka m'malo mongosankha mwachidule.
Mikhalidwe yofalitsira imafunikanso. Njira zambiri, kutsekeka ndi kuyenda kofanana kungasinthe mulingo wolandiridwa ndi kubwerezabwereza kwa muyeso, kotero kuwunika kwa radar kuyenera kuwerengerakutha kwa njira zopanda zingwepamodzi ndi kapangidwe ka array.
- Fotokozani kuchuluka kwa ntchito ndi bandwidth yomweyo.
- Konzani zofunikira pakujambula, kukulitsa, kugawa kwa sidelobe ndi kugawa kwa polarization.
- Dziwani nthawi yofufuzira, kutsata, ndi zofunikira pa ntchito zambiri.
- Yesani mphamvu ya transmitter, mphamvu ya wolandila komanso kuchuluka kwa mphamvu.
- Unikaninso zoletsa kutentha, magetsi, makina ndi chilengedwe.
- Kulinganiza dongosolo, kutsimikizira ndi njira zoyezera antenna.
Ma Array Antennas ndi Chithandizo cha Mayeso a RF kuchokera ku RF MISO
RF MISO ndi wopanga ma antenna a RF ndi ma microwave komanso wogulitsa omwe amathandizira kafukufuku wa ma antenna, muyeso, ndi kuphatikiza makina. Sitipereka radar yonse ngati antenna imodzi yokha. M'malo mwake, mainjiniya amatha kuwunika zigawo zoyenera ndikuyesa mayankho malinga ndi band yofunikira ya frequency, gain, polarization, interface, ndi mechanical envelopu.
Fufuzani RF MISOzinthu za antenna za array, ma antenna ozungulira, ma probe otsogolera mafundendikuthekera koyesa antenna. Pakuwunika polojekiti, perekani gulu logwirira ntchito, polarization, gain target, beamwidth, scan requirement, connector kapena waveguide interface, zoletsa zoyikira ndi momwe zinthu zilili.
Mafunso Ofunsidwa Kawirikawiri
Kodi ma radar a AESA ndi PESA angawongolere kuwala kwa magetsi pogwiritsa ntchito njira zamagetsi?
Inde. Mapangidwe onse awiriwa amagwiritsa ntchito maubwenzi a magawo olamulidwa pakati pa zinthu zamtundu wa array kuti ayendetse mtanda popanda kuzunguliza mozungulira chitseko chonse cha njira iliyonse yojambulira.
Kodi AESA nthawi zonse ndi yabwino kuposa PESA?
Ayi. AESA imapereka ubwino wofunikira pakugwira ntchito mwachangu, kusinthasintha kwa magwiridwe antchito, komanso magwiridwe antchito ambiri, komanso imayambitsa zida zogwira ntchito kwambiri, kuyang'anira kutentha, komanso zovuta kuzilinganiza. Kusankha kolondola kumadalira ntchito ndi zofunikira pamakina.
N’chifukwa chiyani AESA ingapitirize kugwira ntchito pambuyo poti gawo lalephera kugwira ntchito?
Chifukwa kupanga ndi kulandira ma RF kumagawidwa m'ma module ambiri. Kulephera kwa ma module ochepa nthawi zambiri kumachepetsa magwiridwe antchito a aperture pang'onopang'ono, ngakhale kuti zotsatira zake zimadalira kapangidwe ka array ndi malo olakwika.
Kodi ndi magawo ati a antenna omwe amafunikira pakuwunika kwa radar array?
Magawo ofunikira akuphatikizapo ma frequency operating, bandwidth, polarization, gain, beamwidth, sidelobe level, cross-polarization, element spacing, scan loss, impedance match, power handling ndi electrical and mechanical interface.
Kambiranani za Zofunikira Zanu za RF Antenna
Lumikizanani ndi RF MISO kuti mudziwe kuchuluka kwa ma frequency omwe mumagwiritsa ntchito komanso zofunikira paukadaulo kuti mupeze chithandizo chosankha zinthu.
Imelo: info@rf-miso.com|Foni:+86 28 82695327 |www.rf-miso.com
Nthawi yotumizira: Ogasiti-07-2023
