Radar antenna2

Main lobe m'lifupi
Kwa mlongoti uliwonse, nthawi zambiri, mawonekedwe ake amtunda kapena pamwamba amakhala mawonekedwe a petal, motero njira yolowera imatchedwanso lobe pattern.Lobe yokhala ndi mayendedwe opitilira ma radiation imatchedwa lobe yayikulu, ndipo yotsalayo imatchedwa lobe yam'mbali.
Kutalika kwa lobe kumagawidwanso mu theka la mphamvu (kapena 3dB) m'lifupi mwa lobe ndi zero mphamvu ya lobe m'lifupi.Monga momwe chithunzi chili m'munsimu, mbali zonse za mtengo pazipita wa lobe waukulu, ndi ngodya pakati pa mbali ziwiri pamene mphamvu akutsikira theka (0,707 nthawi za kumunda mwamphamvu) amatchedwa theka mphamvu lobe m'lifupi.

Mphepete mwa mbali ziwiri zomwe mphamvu kapena mphamvu yamunda imatsikira pa ziro yoyamba imatchedwa zero-power lobe width.

Polarization ya antenna
Polarization ndi chikhalidwe chofunikira cha mlongoti.Kutumiza kwa polarization kwa mlongoti ndiko kusuntha kwa gawo lamagetsi lamagetsi lamagetsi lamagetsi otumizira mafunde amagetsi kulowera uku, ndipo polarization yolandirira ndikuyenda kwa gawo lamagetsi lamagetsi lakumapeto kwa gawo lomwe likulandira mlongoti. malangizo.
Polarization ya antenna imatanthawuza polarization ya malo enieni vekitala wa wailesi wave, ndi mayendedwe mkhalidwe wa mapeto vekitala magetsi mu nthawi yeniyeni, zomwe zikugwirizana ndi malangizo a danga.Mlongoti womwe umagwiritsidwa ntchito nthawi zambiri umafunikira polarization.
Polarization ikhoza kugawidwa mu mzere wozungulira, polarization yozungulira ndi elliptic polarization.Monga momwe tawonetsera m'chithunzi chomwe chili pansipa, pamene njira yotsiriza ya vector yamagetsi mu Chithunzi (a) ndi mzere wowongoka, ndipo Angle pakati pa mzere ndi X-axis sikusintha ndi nthawi, mafunde a polarized awa amatchedwa. linearly polarized wave.

Poyang'aniridwa motsatira njira yofalitsa, kuzungulira kozungulira kwa vector yamagetsi kumatchedwa kumanja kwa circularly polarized wave, ndipo kuzungulira kozungulira kumatchedwa kumanzere kwa mafunde ozungulira polarized wave.Mafunde a kudzanja lamanja akayang’anizana ndi kumene akufalikira, mafunde akudzanja lamanja amazungulira molunjika koloko ndipo mafunde akumanzere amazungulira koloko.

Zofunikira za rada pa tinyanga
Monga mlongoti wa radar, ntchito yake ndikutembenuza gawo lowongolera lomwe limapangidwa ndi ma transmitter kukhala gawo la radiation mlengalenga, kulandira echo yomwe ikuwonetsedwa mmbuyo ndi chandamale, ndikusintha mphamvu ya echo kukhala gawo lowongolera kuti liperekedwe kwa wolandila.Zofunikira zazikulu za radar za mlongoti nthawi zambiri zimaphatikizapo:
Amapereka kutembenuka kwamphamvu kwamphamvu (kuyezedwa muzochita za mlongoti) pakati pa malo opangira ma radiation ndi mzere wotumizira;Kuchita bwino kwa tinyanga tating'ono kumawonetsa kuti mphamvu ya RF yopangidwa ndi transmitter itha kugwiritsidwa ntchito bwino
Kutha kuyang'ana mphamvu zama frequency apamwamba komwe mukufuna kapena kulandira mphamvu zama frequency apamwamba kuchokera komwe mukufuna (kuyesedwa ndi kupindula kwa mlongoti)
Kugawidwa kwamphamvu kwa malo opangira ma radiation mumlengalenga kumatha kudziwika molingana ndi momwe ma airspace a radar amagwirira ntchito (yoyezedwa ndi chithunzi cha mayendedwe a antenna).
Kuwongolera bwino kwa polarization kumafanana ndi mawonekedwe a polarization a chandamale
Mapangidwe amphamvu amakina ndi ntchito yosinthika.Kusanthula malo ozungulira kumatha kutsatira zomwe mukufuna ndikuteteza ku mphepo
Gwirizanani ndi zofunikira zanzeru monga kuyenda, kubisala kosavuta, kukwanira pazolinga zinazake, ndi zina.