Nhanganyaya
Munguva yekutaurirana kwega of zvakakosha radio link, tiye kupera kwemasaisai eredhiyozvichakanganisa kureba kwekutaurirana.Muchinyorwa ichi, tichazvisuma mune zvakadzama kubva pahunhu hwayo uye kupatsanurwa.
TheKupera Hunhu hweRadio Waves
Hunhu hwemwaranzi yakananga, refraction, kuratidzira, kuparadzira, diffraction uye kutorwa kwemasaisai eredhiyo kunoita kuti masaisai eredhiyo aderere zvishoma nezvishoma nekuwedzera kwechinhambwe chekuparadzira.
(1) Kana masaisai eredhiyo akapararira kunzvimbo dzakakura uye dzakakura uye nzvimbo munzvimbo dzakasununguka, simba remasaisai eredhiyo rinoramba richipararira, zvichikonzera kudzikira kwekupararira (kureva, kurasikirwa kwenzira).Inotsanangurwa sereshiyo yehuwandu hwesimba pane imwe nzvimbo yekuparadzira kubva kune mwaranzi kunobva kune simba density pane imwe unit chinhambwe, uye kukosha kwayo kunopesana nepakati kune sikweya yenzvimbo yekuparadzira.
(2) Ichiri kuparadzira mukati, mukuwedzera kune kuwedzeredza, redhiyo wave simba rinoshandiswa zvakare nepakati, zvichikonzera kunyura uye kudzoreredza.Iyo refractive index n uye absorption attenuation inogara ɑ yemafungu emagetsi anopararira mune akasiyana midhiya akasiyana.
Iyo yekuparadzira nzira yekurasikirwa kweredhiyo inotumirwa neiyo base station inokanganiswa zvakanyanya nenzvimbo uye zvinhu zviri pasi.Iyo yakakwirira iyo base station iri, kureba iyo chiratidzo chichafamba.
Radio wave propagation inobatanawo ne frequency.Iyo yakakwira frequency, yakakura kurasika kwenzira, kuderera kwekugona kusiyanisa, uye kuswedera kwechinhambwe chekuparadzira.Zvakasiyana kune yakaderera frequencies.
Classification yeradio wave kupera
(1) Zvinoenderana nepesvedzero yekudzima pamasaini asina waya, kupera kwemasaisai eredhiyo panguva yekufambisa munzvimbo isina waya kunokamurwa kuita.3mapoka:
● Avhareji Yokurasikirwa Kwenzira-Avhareji yakagamuchirwa simba rechiratidzo inosiyana zvakasiyana nemamwe simba rekuwedzera kureba kwedaro.
● Shadow fading - kana radio wave ikasangana neelectromagnetic field shadow inokonzerwa nezvipingaidzo zvakasiyana panzira yekuparadzira, nhanho yaro yepakati inoshanduka zvinyoro nyoro nenzvimbo, nguva uye kumhanya kwekufamba, kunonzi mumvuri kupera (nekuda kwekuchinja kunonoka, saka kunonziwo kunonoka kupera).
●Multipath Fading - Kupera nekuda kwekuwanda kwekuwandisa.Iyo amplitude uye chikamu cheiyo synthesized wave pachiteshi chekugamuchira inochinja nekukurumidza nekufamba kweiyo mobile station.Chiitiko ichi chinowanzonzi multipath fading (inonziwo kukurumidza kupera nekuti simba rechiratidzo rinogamuchirwa rinoshanduka nekukurumidza).
(2) Zvinoenderana nehukuru hwekushanduka kwesimba remunda kwechiratidzo chakagamuchirwa, kupera kwemasaisai eredhiyo kunokamurwa kuita 3.mhando:
●Kupera kukuru-kunotsanangura kuderedzwa kwechiratidzo chinokonzerwa nechinhambwe, uye hunhu hwesimba rechiratidzo rakagamuchirwa muchikamu chikuru (mazana kana makiromita) chinosiyana nekufamba nekugamuchira chinhambwe.
●Mesoscale Fading - Chimiro chinononoka chepakati chakagamuchira simba rechiratidzo pamusoro pepakati-kati (mazana emawavelength).
● Zviduku-zviduku zvinopera-kukurumidza kushanduka kwechimiro chekukosha kwepakarepo kwesimba remunda wechiratidzo chakagamuchirwa muchikamu chiduku (makumi emakiromita).
Munzvimbo yemaserura mune maitiro maviri:
1. Multipath, kutsanya kwenguva pfupi kunokonzerwa nekufungisisa uye kupararira kubva panzvimbo yekuvaka kana zvimwe zvinhu.
2. Kuchinja kwenguva refu kunononoka musimba rechiratidzo chikuru chinobudiswa nenzira yakananga inooneka.Iyo chiteshi inoshanda mukudzima nekukurumidza inoteerera kugoverwa kweRayleigh uye inokwidziridzwa nekuderera kunononoka kuti amplitude yechiratidzo inoenderana neiyo logarithmic yakajairika kugovera.
IWAVE COMMUNICATIONS CO., LTD.inyanzvi mukugadzira uye kugadzira kwehurefu hwakasimba husina waya data midziyo.Kuenderera mberi kwedu hunyanzvi uye kusingaenzaniswi kwechigadzirwa kuita kwakatipa zita rakavimbika muindasitiri isina waya.
IWAVEinopakureba IP MESH, NLOS yedhijitari data links yemarobhoti,OEMEthernetzvigadzirwanokutiswarm uav communication, zvigadzirwa zvakapetwa, uyekureba kwewireless kutauriranamasisitimu evatengi vekutengesa nemaindasitiri.IWAVE mishoni yakakosha mhinduro dzakachengeteka, kugovera uye kutaurirana chaiyo-nguva vhidhiyo, izwi uye data munzvimbo refu uye yakaoma nharaunda.
Nguva yekutumira: Aug-15-2023
