Ngokusetshenziswa okubanzi kobuchwepheshe be-electromagnetic stealth emishinini yezempi (ikakhulukazi ezindizeni), ukubaluleka kocwaningo ngezici zokuhlakazeka kwe-electromagnetic kokuhlosiwe kwe-radar sekuya ngokuya kugqama.Njengamanje, kunesidingo esiphuthumayo sendlela yokutholwa kwezici zokuhlakazeka kozibuthe zalokho okuhlosiwe, engasetshenziselwa ukuhlaziya ikhwalithi yokusebenza kobuchwephesha kogesi kanye nomthelela ongemuhle wethagethi.Isilinganiso se-Radar Cross Section (RCS) siyindlela ebalulekile yokufunda izici zokuhlakazeka kwe-electromagnetic zokuhlosiwe.Njengobuchwepheshe obuthuthukisiwe emkhakheni wokulinganisa nokulawula i-aerospace, ukukalwa kwezimpawu ze-radar kusetshenziswa kabanzi ekwakhiweni kwe-radar entsha.Ingakwazi ukunquma umumo nosayizi wokuhlosiwe ngokulinganisa i-RCS kuma-engeli abalulekile wesimo sengqondo.I-radar yokulinganisa ukunemba okuphezulu ngokuvamile ithola ulwazi oluqondiwe ngokulinganisa izici zokunyakaza okuqondiwe, izici zokubonisa i-radar nezici ze-Doppler, phakathi kwazo ukulinganisa kwezimpawu ze-RCS kuwukukala izici zokuboniswa kwethagethi.
Incazelo kanye nesimiso sokulinganisa sokuhlakazeka kwe-radar interface
Incazelo yesixhumi esibonakalayo esihlakazekayo Uma into ikhanyiswa ngamaza kagesi, amandla ayo azohlakazeka kuzo zonke izinhlangothi.Ukusatshalaliswa kwendawo kwamandla kuncike ekuma, usayizi, ukwakheka kwento kanye nemvamisa nezici zegagasi lesigameko.Lokhu kusatshalaliswa kwamandla kubizwa ngokuthi ukuhlakazeka.Ukusatshalaliswa kwendawo kwamandla noma ukuhlakazwa kwamandla ngokuvamile kubonakala ngesigaba esiphambanayo sokuhlakazeka, okuwukucatshangwa kokuhlosiwe.
Ukulinganisa kwangaphandle
Isilinganiso se-RCS yenkambu yangaphandle ibalulekile ukuze kutholwe izici zokuhlakazeka kwe-electromagnetic zokuhlosiwe kosayizi ogcwele omkhulu [7] Ukuhlolwa kwenkambu yangaphandle kuhlukaniswe ukuhlolwa okuguquguqukayo nokuhlola okumile.Isilinganiso se-RCS esiguqukayo silinganiswa phakathi nokundiza kwezinga lelanga.Ukulinganisa okuguquguqukayo kunezinzuzo ezithile ngaphezu kokulinganisa okumile, ngoba kuhlanganisa imithelela yamaphiko, izingxenye zokuphehla injini, njll. esigabeni esiphambanayo se-radar.Iphinde ihlangabezane nezimo zensimu ekude kahle kusukela ku-11 kuya ku-11 Nokho, izindleko zayo ziphakeme, futhi zithinteka yisimo sezulu, kunzima ukulawula isimo sengqondo salokho okuhlosiwe.Uma kuqhathaniswa nokuhlola okuguquguqukayo, i-engeli glint ibucayi.Ukuhlola okumile akudingi ukulandelela ibhakoni yelanga.Ithagethi elinganisiwe igxilile ku-turntable ngaphandle kokuzungezisa uthi.Kuphela ngokulawula i-engeli yokuzungezisa ye-turntable, ukulinganisa kwe-omni-directional kwethagethi elinganisiwe engu-360 kungenziwa.Ngakho-ke, izindleko zesistimu nezindleko zokuhlola zehliswa kakhulu Ngesikhathi esifanayo, ngenxa yokuthi isikhungo sethagethi simile ngokuhlobene ne-antenna, ukunemba kokulawula isimo sengqondo kuphezulu, futhi isilinganiso singaphindwa, okungathuthukisi nje ukunemba kwe-antenna. ukukala nokulinganiswa, kodwa futhi kulula, ukonga, futhi kuyalawuleka.Ukuhlola okuqinile kulungele izilinganiso eziningi zethagethi.Lapho i-RCS ivivinywa ngaphandle, indiza yaphansi inomthelela omkhulu, futhi umdwebo wohlelo lokuhlolwa kwayo kwenkundla yangaphandle uboniswa kuMfanekiso 2 Indlela eyaqala ukuvela kwakuwukuhlukanisa okuhlosiwe okukhulu okufakwe phakathi kwebanga ukusuka endizeni yaphansi, kodwa eminyakeni yamuva cishe akunakwenzeka ukufeza lokhu Kuyaqashelwa ukuthi indlela ephumelela kakhulu yokubhekana nokucabangela kwendiza yomhlabathi ukusebenzisa indiza ephansi njengomhlanganyeli enkambweni yokukhishwa kwemisebe, okungukuthi, ukudala indawo yokubonisa umhlabathi.
Isilinganiso sobubanzi obuhlangene endlini
Ukuhlolwa kwe-RCS okufanelekile kufanele kwenziwe endaweni engenamafuhlufuhlu abonisiwe.Inkambu yesigameko ekhanyisa okuqondiwe ayithintwa indawo ezungezile.Igumbi le-microwave anechoic linikeza inkundla enhle yokuhlolwa kwe-RCS yangaphakathi.Izinga lokubonisa ingemuva lingancishiswa ngokuhlela ngokunengqondo izinto ezimuncayo, futhi ukuhlolwa kungenziwa endaweni elawulekayo ukuze kuncishiswe umthelela wendawo.Indawo ebaluleke kakhulu yegumbi le-microwave anechoic ibizwa ngokuthi indawo ethule, futhi okuhlosiwe noma uthi oluzohlolwa lubekwe endaweni ethule Ukusebenza kwayo okuyinhloko ubukhulu bezinga elilahlekile endaweni ethule.Amapharamitha amabili, i-reflection kanye nengxenye yesiphambano ye-radar engokwemvelo, ngokuvamile isetshenziswa njengezinkomba zokuhlola ze-microwave anechoic chamber [.. Ngokwezimo zenkundla ezikude ze-antenna ne-RCS, R ≥ 2IY, ngakho isikali D sosuku sikhulu kakhulu. inkulu, futhi ubude begagasi bufushane kakhulu.Ibanga lokuhlola elingu-R kufanele libe likhulu kakhulu.Ukuze kuxazululwe le nkinga, ubuchwepheshe obusezingeni eliphezulu obusebenza ngobubanzi buthuthukisiwe futhi busetshenziswa kusukela ngeminyaka yawo-1990.Umfanekiso 3 ubonisa ishadi lokuhlola lebanga elihlangene elibonisayo olulodwa.Uhla oluhlangene lusebenzisa isistimu yesibonisi esakhiwe ama-paraboloid ajikelezayo ukuze aguqule amaza ayindilinga abe amagagasi endiza ebangeni elifushane uma kuqhathaniswa, futhi okuphakelayo kubekwa endaweni ebonisa ukukhanya Indawo okugxilwe kuyo yendawo, yingakho igama elithi "compact".Ukuze kuncishiswe i-taper kanye nokuzamazama kwe-amplitude yendawo emile yobubanzi obuhlangene, umkhawulo wendawo ekhanyayo iyacutshungulwa ukuze ihlukaniswe.Esilinganisweni sokuhlakazeka kwasendlini, ngenxa yomkhawulo wosayizi wegumbi elimnyama, amagumbi amnyama amaningi asetshenziswa njengamamodeli okuqondiwe kwesikali sokulinganisa.Ubudlelwano phakathi kwe-RCS () yemodeli yesikali esingu-1: s kanye ne-RCS () eguqulelwe kusayizi wangempela oqondiwe ongu-1:1 yi-1+201gs (dB), futhi imvamisa yokuhlola yemodeli yesikali kufanele ibe izikhathi eziphindwe kasikhombisa kunokwangempela. imvamisa yokuhlolwa kwesikali selanga f.
Isikhathi sokuthumela: Nov-21-2022