Ngokusetyenziswa okubanzi kobuchwephesha bobuchwephesha be-electromagnetic stealth kwizixhobo zomkhosi (ingakumbi inqwelomoya), ukubaluleka kophando kwiimpawu zokusasazeka kwe-electromagnetic yeethagethi zerada kuye kwavela ngakumbi.Okwangoku, kukho imfuneko engxamisekileyo yendlela yokubona iimpawu zokusasazeka kwe-electromagnetic koko kujoliswe kuko, enokuthi isetyenziselwe uhlalutyo lomgangatho wokusebenza kombane we-electromagnetic stealth kunye nesiphumo esifihlakeleyo sethagethi.Umlinganiselo we-Radar Cross Section (RCS) yindlela ebalulekileyo yokufunda iimpawu zokuchithwa kwe-electromagnetic kwiithagethi.Njengobuchwephesha obuphambili kwinkalo yomlinganiselo we-aerospace kunye nolawulo, umlinganiselo weempawu ezijoliswe kwi-radar usetyenziswa ngokubanzi kuyilo lweradar entsha.Iyakwazi ukumisela imilo kunye nobukhulu beethagethi ngokulinganisa i-RCS kwii-angles zengqondo ezibalulekileyo.I-radar yokulinganisa ukuchaneka okuphezulu ngokuqhelekileyo ifumana ulwazi olujoliswe kuyo ngokulinganisa iimpawu zentshukumo ezijoliswe kuyo, iimpawu zokubonisa i-radar kunye neempawu ze-Doppler, phakathi kwazo ukulinganisa kweempawu ze-RCS kukulinganisa iimpawu ezijoliswe kuzo.
Inkcazo kunye nomgaqo wokulinganisa we-radar yokusasaza ujongano
Inkcazo yokusasaza ujongano Xa into ikhanyiswe ngamaza ombane wombane, amandla ayo aya kuthi saa kuwo onke amacala.Ukusasazwa kwendawo yamandla kuxhomekeke kwimilo, ubungakanani, ulwakhiwo lwento kunye nobuninzi kunye neempawu zesiganeko samaza.Oku kusasazwa kwamandla kubizwa ngokuba kukusasazwa.Ukusasazwa kwendawo yamandla okanye ukusasazwa kwamandla ngokuqhelekileyo kubonakaliswe ngokusasazwa kwecandelo elinqamlezayo, eliyingcinga yethagethi.
Umlinganiselo wangaphandle
Umlinganiselo we-RCS wentsimi wangaphandle ubalulekile ekufumaneni iimpawu zokuchithwa kwe-electromagnetic zobukhulu obujoliswe kuko obukhulu obupheleleyo [7] Uvavanyo lwentsimi yangaphandle lwahlulwe lwaba luvavanyo oluguquguqukayo kunye novavanyo lwe-static.Umlinganiselo we-RCS oguqukayo ulinganiswa ngexesha lokuhamba komgangatho welanga.Umlinganiselo oguquguqukayo uneenzuzo ezithile ngaphezu komlinganiselo we-static, kuba ubandakanya imiphumo yamaphiko, i-injini ye-propulsion components, njl. kwicandelo lomnqamlezo we-radar.Ikwahlangabezana neemeko ezikude kakuhle ukusuka kwi-11 ukuya kwi-11 Nangona kunjalo, ixabiso layo liphezulu, kwaye lichaphazelekayo yimozulu, kunzima ukulawula isimo sengqondo ekujoliswe kuyo.Xa kuthelekiswa novavanyo oluguquguqukayo, i-angle glint inzulu.Uvavanyo lwe-static aludingi ukulandelela i-beacon yelanga.Ithagethi elinganisiweyo igxininiswe kwi-turntable ngaphandle kokujikeleza i-eriyali.Kuphela ngokulawula i-angle yokujikeleza ye-turntable, umlinganiselo we-omni-directional we-target elinganisiweyo ye-360 inokufezekiswa.Ngoko ke, iindleko zenkqubo kunye neendleko zokuvavanya ziyancipha kakhulu Ngexesha elifanayo, kuba iziko ekujoliswe kulo limile ngokumalunga ne-antenna, ukuchaneka kokulawula isimo sengqondo kuphezulu, kwaye umlinganiselo unokuphinda uphindwe, ongaphuculi nje ukuchaneka kwe-antenna. umlinganiselo kunye nolungelelwaniso, kodwa ikwalungile, inoqoqosho, kwaye iyalawuleka.Uvavanyo oluzinzileyo lulungele imilinganiselo emininzi ekujoliswe kuyo.Xa i-RCS ivavanywa ngaphandle, i-plane yomhlaba inempembelelo enkulu, kwaye umzobo we-schematic wovavanyo lwangaphandle uboniswe kwi-Figure 2 Indlela yokuqala efike ngayo yayikukwahlula iithagethi ezinkulu ezifakwe ngaphakathi kwendawo ukusuka kwinqwelomoya, kodwa. kwiminyaka yakutshanje phantse akunakwenzeka ukuphumeza oku Kuyaqatshelwa ukuba eyona ndlela isebenzayo yokujongana nokubonakaliswa kwendiza yomhlaba kukusebenzisa inqwelomoya yomhlaba njengomthathi-nxaxheba kwinkqubo yokukhupha i-irradiation, oko kukuthi, ukudala indawo ebonisa umhlaba.
Umlinganiselo woluhlu oludityanisiweyo lwangaphakathi
Olona vavanyo lufanelekileyo lwe-RCS kufuneka lwenziwe kwindawo engenabuxhakaxhaka obubonakalayo.Indawo yesiganeko ekhanyisa ekujoliswe kuyo ayichatshazelwa yimeko engqongileyo.Igumbi le-microwave anechoic libonelela ngeqonga elifanelekileyo lovavanyo lwangaphakathi lweRCS.Inqanaba lokubonisa imvelaphi lingancitshiswa ngokucwangcisa ngokufanelekileyo izinto ezifunxayo, kwaye uvavanyo lunokwenziwa kwindawo elawulwayo ukuze kuncitshiswe impembelelo yokusingqongileyo.Indawo ebaluleke kakhulu yegumbi le-microwave anechoic ibizwa ngokuba yindawo ezolileyo, kwaye ithagethi okanye i-antenna ekufuneka ivavanywe ibekwe kwindawo ezolileyo Ukusebenza kwayo okuphambili kubukhulu benqanaba elilahlekileyo kwindawo ezolileyo.Iiparamitha ezimbini, i-reflection kunye ne-inherent radar cross section, zidla ngokusetyenziswa njengezalathisi zovavanyo lwegumbi le-microwave anechoic [.. Ngokweemeko zentsimi ezikude ze-eriyali kunye ne-RCS, R ≥ 2IY, ngoko ke isikali D sosuku sikhulu kakhulu. inkulu, kwaye ubude bamaza bufutshane kakhulu.Umgama wovavanyo R kufuneka ube mkhulu kakhulu.Ukucombulula le ngxaki, itekhnoloji yoluhlu oluphezulu olusebenzayo luye lwaphuhliswa kwaye lwasetyenziswa ukususela ngo-1990.Umzobo wesi-3 ubonisa itshathi yovavanyo oluluqilima olubonisa enye.Uluhlu lwe-compact lusebenzisa inkqubo yokubonisa eyenziwe ngama-paraboloids ajikelezayo ukuguqula amaza ajikelezayo abe ngamaza endiza kumgama omfutshane, kwaye isondlo sibekwe kwi-reflector Indawo ekugxilwe kuyo yendawo yezinto, ngoko ke igama elithi "compact".Ukuze kuncitshiswe i-taper kunye ne-waviness ye-amplitude ye-static zone yoluhlu oludibeneyo, umda wendawo ebonisayo ucutshungulwa ukuba uhlanjululwe.Kumlinganiso wokusasazwa kwangaphakathi, ngenxa yomda wobungakanani begumbi elimnyama, uninzi lwamagumbi amnyama asetyenziswa njengemodeli ekujoliswe kuyo yesikali somlinganiselo.Ubudlelwane phakathi kwe-RCS () ye-1: imodeli yesikali kunye ne-RCS () iguqulelwe kwi-1: 1 ubungakanani bethagethi yokwenyani yinye + 201gs (dB), kunye novavanyo oluphindaphindiweyo lwemodeli yesikali kufuneka lube ngamaxesha okwenene. Uvavanyo lobungakanani belanga f.
Ixesha lokuposa: Nov-21-2022