ʻO ka band Q-band a me ka EHF (Extremely High Frequency) he mau kaha alapine koʻikoʻi i ka spectrum electromagnetic, me nā hiʻohiʻona kūikawā a me nā noi ākea.
Pāna Q:
ʻO ka hui Q-band ka mea maʻamau i ka laina alapine ma waena o 33 a me 50 GHz, aia ma ka laulā EHF.
ʻO kāna mau hiʻohiʻona nui:
ʻO ke alapine kiʻekiʻe: pōkole lōʻihi hawewe, ma kahi o 6 a 9 mm.
ʻO ka bandwidth kiʻekiʻe: kūpono no ka lawe ʻana i ka ʻikepili kiʻekiʻe.
ʻO nā wahi noi nui o Q-band:
Kūkākūkā Satellite: hoʻohana ʻia no ka uplink a me ka downlink o nā ʻōnaehana kiʻekiʻe throughput satellite (HTS) e hoʻolako i nā lawelawe pūnaewele ākea.
ʻO ke kamaʻilio microwave honua: hoʻohana ʻia no ka lawe ʻana i ka ʻikepili kiʻekiʻe.
Lekiō astronomy: hoʻohana ʻia e nānā i nā kumu lekiō kiʻekiʻe ma ke ao holoʻokoʻa.
Radar kaʻa: hoʻohana ʻia ka radar pōkole i nā ʻōnaehana kōkua hoʻokele holomua (ADAS).
Pāʻani EHF:
ʻO ka pūʻulu EHF e pili ana i ka laina alapine ma waena o 30 a me 300 GHz a ʻo ka lōʻihi o ka hawewe he 1 a 10 mm, no laila ua kapa ʻia ʻo ia ka pūʻulu nalu millimeter.
ʻO kāna mau hiʻohiʻona nui:
ʻO ke alapine ultra-kiʻekiʻe: hiki ke hāʻawi i ka nui o ka hoʻouna ʻikepili kiʻekiʻe.
ʻO ke kukui haiki: liʻiliʻi liʻiliʻi ka nui antenna a me ke kuhikuhi ikaika.
ʻO nā wahi noi nui o ka hui EHF:
Nā kamaʻilio pūʻali koa: hoʻohana ʻia no nā ʻōnaehana kamaʻilio me nā koi hūnā kiʻekiʻe, e like me nā ʻōnaehana Milstar a me Advanced Extremely High Frequency (AEHF) o ka pūʻali koa US.
Nā leka uila: hāʻawi i nā lawelawe broadband a me ke kākoʻo ʻana i ka hoʻoili ʻikepili kiʻekiʻe.
Nā ʻōnaehana radar: hoʻohana ʻia no nā radar kiʻi kiʻi kiʻekiʻe a me nā radar hoʻomalu ahi.
Ka noiʻi ʻepekema: hoʻohana ʻia no ka ʻike lewa a me ka nānā ʻana i ka lekiō astronomy.
Nā pilikia a me nā hanana:
ʻOiai ʻo nā pūʻulu Q-band a me EHF he mau manaʻolana hoʻohana ākea, ke kū nei lākou i kekahi mau pilikia i nā noi kūpono:
ʻO ka attenuation lewa: hiki ke loaʻa nā hōʻailona kiʻekiʻe i nā mea meteorological e like me ka hoʻohaʻahaʻa ʻana i ka ua i ka wā o ka hoʻolaha ʻana, e hopena i ka attenuation hōʻailona.
ʻO ka paʻakikī ʻenehana: loaʻa i nā mea hana kiʻekiʻe ka hoʻolālā kiʻekiʻe a me nā koi hana a me nā kumukūʻai kiʻekiʻe.
No ka hoʻokō ʻana i kēia mau pilikia, ke hoʻomohala nei nā mea noiʻi i nā ʻenehana modulation kiʻekiʻe a me nā ʻenehana coding, a me nā hoʻolālā ʻokoʻa o ka puka naʻauao e hoʻomaikaʻi ai i ka hilinaʻi ʻana o ka ʻōnaehana a me nā hiki ke hoʻopilikia.
Ka hopena:
He kuleana koʻikoʻi ko Q-band a me ka EHF-band i nā kamaʻilio hou, radar a me ka noiʻi ʻepekema.
Me ka holomua o ka ʻenehana, e hoʻonui hou ʻia ka hoʻohana ʻana i kēia mau ala alapine, e hāʻawi ana i nā manawa hou no ka hoʻomohala ʻana i nā ʻano hana like ʻole.
Ka manawa hoʻouna: Dec-23-2024
