Antenna radar2

Isi lobe obosara
Maka antenna ọ bụla, n'ọtụtụ ọnọdụ, elu ya ma ọ bụ ụkpụrụ nduzi elu ya na-abụkarị ọdịdị petal, ya mere a na-akpọkwa ụkpụrụ nduzi lobe.A na-akpọ lobe nwere ntụzịaka radieshon kachasị elu, a na-akpọkwa ndị ọzọ n'akụkụ lobe.
A na-ekewa obosara lobe ka ọ bụrụ ọkara ike (ma ọ bụ 3dB) obosara lobe na obosara lobe efu efu.Dị ka e gosiri na ọnụ ọgụgụ dị n'okpuru ebe a, n'akụkụ abụọ nke uru kachasị elu nke isi lobe, Angle n'etiti ntụziaka abụọ ahụ ebe ike na-adaba na ọkara (oge 0.707 nke ike ubi) ka a na-akpọ ọkara ike lobe obosara.

Akụkụ dị n'etiti ntụzịaka abụọ ebe ike ma ọ bụ ubi ike na-adaba na efu nke mbụ ka a na-akpọ obosara lobe efu efu.

Antenna polarization
Polarization bụ njirimara dị mkpa nke antenna.Polarization na-ebufe nke antenna bụ ọnọdụ ngagharị nke ikuku vector vector endpoint nke antenna na-ebufe na-efegharị eletrọnịkị n'akụkụ a, na nnabata polarization bụ ọnọdụ ngagharị nke vector vector vector mpaghara nke ọdụ ụgbọ elu na-anata antenna na nke a. uzo.
The polarization nke antenna na-ezo aka na polarization nke kpọmkwem ubi vector nke redio ebili mmiri, na ngagharị ọnọdụ nke njedebe ọgwụgwụ nke electric vector vector na ozugbo, nke metụtara ntụziaka nke ohere.Antenna a na-eji eme ihe na-achọkarị nhịahụ.
Enwere ike kewaa polarization ka ọ bụrụ polarization linear, polarization okirikiri na polarization elliptik.Dị ka e gosiri na ọnụ ọgụgụ dị n'okpuru ebe a, ebe trajectory nke njedebe nke njedebe nke vector eletriki eletrik na Figure (a) bụ ahịrị kwụ ọtọ, na Angle n'etiti eriri na X-axis adịghị agbanwe ka oge na-aga, a na-akpọ ebili mmiri polarized a. linearly polarized ife.

Mgbe a na-ahụ ya n'akụkụ ebe a na-agbasa, ntụgharị n'akụkụ elekere nke vector mpaghara eletrik ka a na-akpọ ebili mmiri nwere okirikiri nwere aka nri, na ntụgharị ihu n'aka ekpe ka a na-akpọ ebili mmiri okirikiri nwere okirikiri.Mgbe a na-ahụ ya megide ntụzịaka nke mgbasa, ebili mmiri aka nri na-atụgharị n'akụkụ elekere ma ebili mmiri nke aka ekpe na-atụgharị n'akụkụ elekere.

Ihe radar chọrọ maka antennas
Dị ka antenna radar, ọrụ ya bụ ịtụgharị mpaghara ebili mmiri na-eduzi nke onye na-ebugharị na-emepụta n'ime oghere radieshon mbara igwe, nata nkwughachi azụ azụ site na ebumnuche, ma gbanwee ike nke mgbanaka n'ime mpaghara ebili mmiri na-eduzi iji bufee onye nnata.Ihe ndị bụ isi achọrọ maka radar maka antenna n'ozuzu gụnyere:
Na-enye ntụgharị ike dị mma (atụnyere na arụmọrụ antenna) n'etiti oghere radieshon oghere na eriri nnyefe;Ịrụ ọrụ antenna dị elu na-egosi na enwere ike iji ike RF nke onye na-ebugharị na-emepụta nke ọma
Ikike ilekwasị anya n'ike ugboro ugboro na ntụzịaka nke ebumnuche ma ọ bụ nweta ume ugboro ugboro site na ntụzịaka nke ebumnuche (atụpụtara na uru antenna)
Enwere ike mara nkesa ike nke oghere radieshon oghere na mbara igwe dịka ọrụ ikuku radar si dị (nke ejiri eserese antenna tụọ ya).
Njikwa polarization dabara adaba na njirimara polarization nke ebumnuche
Usoro nhazi siri ike na ọrụ na-agbanwe agbanwe.Ịnyocha oghere gbara ya gburugburu nwere ike soro ebumnuche ma chebe mmetụta ikuku
Zute ihe a chọrọ n'ụzọ aghụghọ dị ka ngagharị, ịdị mfe nke camouflage, dabara maka ebumnuche akọwapụtara, wdg.