How Do Radio Waves Travel in Long Range Wireless Communication?

Ke ʻano hoʻolaha o nā hawewe lekiō

E like me ka mea lawe i ka hoolaha ike makamaʻilio ʻole, ʻo nā hawewe lekiō ma nā wahi a pau i ke ola maoli.ʻO ka hoʻolaha uea ʻole, ke kelepona ʻole, ke kamaʻilio ukali,kamaʻilio paʻa lima, radar, a me ka uilaIP MESHpili nā mea hana pūnaewele i ka hoʻohana ʻana i nā hawewe lekiō.

He paʻakikī loa ke kaiapuni hoʻolaha o nā hawewe lekiō, e komo pū ana me kahi ākea (kahi kūpono ʻole, isotropic radio wave propagation, vacuum a i ʻole lossless uniform medium space, he abstraction ʻepekema i manaʻo ʻia e hoʻomaʻamaʻa i ka noiʻi pilikia) propagation and medium ( earth crust, sea ). wai, lewa, etc.) propagation.

A ʻo nā hawewe lekiō he ʻano ʻano hoʻolaha like ʻole, me nā kaʻina hana a pau o ka hoʻolaha ʻana o ka hawewe lekiō, e like me: direct radiation, reflection, refraction, diffraction, scattering, etc.

ʻO ka pāhawewe pololei

ʻO ka radiation pololei ke ala e holo ai nā nalu lekiō ma kahi ākea.ʻAʻohe noʻonoʻo, refraction, diffraction, dispersion a absorption o nā hawewe lekiō ma kahi ākea.

Noonoo

Ke hālāwai ka nalu electromagnetic i kahi mea i ʻoi aku ka nui ma mua o ka lōʻihi o ka nalu, hiki ke ʻano o ka noʻonoʻo ʻana (ka hoʻololi ʻana i ke ala o ka hoʻolaha ʻana ma ke kikowaena ma waena o nā mea hoʻolaha ʻelua a hoʻi i ke kumu kumu).

Refraction

Ke komo ka hawewe electromagnetic i kekahi ʻano ʻē aʻe mai kekahi ʻano, hoʻololi ke ala hoʻolaha (ua hoʻokumu ʻia kekahi kihi me ka ʻaoʻao kumu, akā ʻaʻole ia e hoʻi i ke ala kumu).

Hoʻokaʻawale

I ke ala hoʻolaha ma waena o nāuwea olemea hoʻounaa ua ālai ʻia ka mea hoʻokipa e kekahi keakeʻa, e hele mau ana ka nalu lekiō a puni ka lihi o ka ʻākeʻakeʻa.Hiki i ka diffraction ke hoʻolaha i nā hōʻailona lekiō ma hope o nā pilikia.

Shānai ʻai

Ma muli o ka inhomogeneity o ka mea hoʻolaha - e like me ka curvature nui, roughness, etc., ke ʻano o nā hawewe electromagnetic e laha ana i ka puni.Hiki ke ho'opuehu ke loa'a nā mea li'ili'i ma mua o ka lō'ihi hawewe ma ke ala ho'olaha, a nui loa ka heluna o ia mau mea keakea i kēlā me kēia leo.

Ma kahi kaiapuni kamaʻilio kelepona paʻalima maʻamau, ʻaʻole ma ke ala pololei ke kamaʻilio ʻana ma waena o kahi kahua paʻa kelepona a me kahi keʻena paʻa lima, akā ma nā ala ʻē aʻe.I ka wā o ka hoʻolaha ʻana o nā hawewe lekiō, e ʻike ʻia nā mea like ʻole, no laila, ma waho aʻe o ka radiation pololei, e hiki mai ana nā noʻonoʻo like ʻole, refraction a me ka lūlū ʻana.ʻO kēia mau hōʻailona e hōʻea ana i ka mea hoʻokipa ma o nā ala hoʻolaha like ʻole he ʻokoʻa nā amplitudes a me nā pae.ʻO kā lākou hopena hui e lilo ai ka hōʻailona i loaʻa i ka mea hoʻokipa e lilo i mea paʻakikī loa, a hiki i ka hoʻopilikia a i ʻole ka distortion, ʻo ia hoʻi, multi-hopena hoʻolaha ala.

Pehea e hoʻohana ai i nā nalu radio nokamaʻilio?

ʻO ke kumu o ka hoʻohana ʻana i nā hawewe lekiō nohoʻoili wikiōʻo ia ke hoʻololi i nā hōʻailona wikiō i nā hawewe electromagnetic a hoʻouna iā lākou ma o ka antenna.Ma hope o ka loaʻa ʻana o nā hawewe electromagnetic, hoʻololi ka antenna ma ka hopena e loaʻa iā lākou i mau hōʻailona wikiō kumu.ʻO ke kamaʻilio lekiō, ke kelepona kelepona paʻa, ke kamaʻilio satelite, a me nā mea ʻē aʻe e hana ʻia me ka hoʻohana ʻana i nā hawewe electromagnetic.Ma waena o lākou, hiki ke hoʻohana ʻia nā hawewe electromagnetic o nā alapine like ʻole no nā ʻano kamaʻilio like ʻole.No ka laʻana, hoʻohana nui ʻia nā hawewe lekiō i ka hoʻolaha ʻana, ke kīwī, a me nā kamaʻilio lekiō, ʻoiai hoʻohana ʻia nā microwaves i ka radar, nā leka uila, a me nā kamaʻilio kelepona, a me nā mea ʻē aʻe.

Aia ke keʻena nui o IWAVE a me ke kikowaena R&D ma Shanghai.He ʻoihana ʻenehana kiʻekiʻe o ka ʻāina e kālele ana i nā hāmeʻa hoʻoili uila kiʻekiʻe.ʻO nā limahana koʻikoʻi o ka hui mai nā hui kamaʻilio honua kiʻekiʻe, ʻoi aku ka nui o lākou a pau ma mua o 8 a 15 mau makahiki o ka ʻike hana makamaʻilio ʻolenā mahinaʻai.Ua kūpaʻa ʻo IWAVE i ka hoʻomohala ʻana a me ka hoʻolako ʻana i nā ʻōnaehana hoʻoili wikiō uea ʻole kiʻekiʻe a me ka broadband uilaIP MESHnā pūnaewele.Loaʻa i kāna mau huahana nā mea maikaʻi o ka lōʻihi o ka hoʻouna ʻana, ka haʻahaʻa haʻahaʻa, ka hoʻoili paʻa no nā kaiapuni paʻakikī, a ua hoʻohana nui ʻia i nā drones, robots, pilikia ahi, nānā, palekana a me nā kahua kūikawā ʻē aʻe.