RSSI ni impfunyapfunyo yakiriwe Ikimenyetso Cyimbaraga Zerekana. Ibimenyetso byakiriwe imbaraga biranga bibarwa mugereranya indangagaciro ebyiri; ni ukuvuga, irashobora gukoreshwa kugirango hamenyekane imbaraga zikomeye cyangwa intege nke imbaraga zigereranya nizindi kimenyetso.
Inzira yo kubara ya RSSI ni: 10 * log (W1 / W2)
Umubare fatizo wibiti ni 10 muburyo budasanzwe, W1 yerekana imbaraga 1 (muri rusange imbaraga zo gupimwa), naho W2 igereranya imbaraga 2 (imbaraga zisanzwe). Ibisobanuro 'ibisobanuro ni ikimenyetso cyerekana W1 nini cyangwa ntoya kuruta W2. Igice ni DB, kidafite ubusobanuro bufatika ariko kigereranya agaciro kagereranijwe. Birashobora kumvikana nkitandukaniro riri hagati yikigereranyo cya W1 na W2. Nibintu bidasobanutse bidafite igice cyihariye. Nibyo, iyo ugereranije W1 na W2 biri mubice bimwe, ariko uko byagenda kose, itandukaniro riri hagati yaryo numubare DB.
Urubanza rwihariye:iyo W2 ari 1, igice cya RSSI gishobora kugenwa ukurikije igice cya W2. Niba W2 ari 1mw, igice cya RSSI ni dBm; niba W2 ari 1w, igice cya RSSI ni dbw. Nibwo W2 ari 1mw cyangwa 1w, igice cya W1 gishobora guhinduka kuva MW cyangwa w kikajya kuri dbm cyangwa dbw.
urugero:Agaciro ko guhindura 40000 MW yingufu kuri dBm ni 10 * log (40000 / 1mw) 46 dBm.
None se kuki utangiza DB?
1.Mbere ya byose, imikorere igaragara ni ukugabanya agaciro korohereza gusoma no kwandika, nkurugero rukurikira:
0.000000000000001 = 10 * log (10 ^ -15) = -150 dB
2.Nibyiza kandi kubara indangagaciro nto: kugwiza bikoreshwa mugukuza urwego rwinshi, mugihe DB ikoresha inyongera kubera logarithmic log. Kurugero, niba ukinisha inshuro 100 hanyuma ukiyongera inshuro 20, gukuza kwose ni 100 * 20 = 2000, ariko kubara DB ni 10 * log (100) = 20, 10 * log (20) = 13, no gukuza kwose ni 20 + 13 = 33db
3.Birasobanutse neza kubyiyumvo nyabyo. Iyo ingufu shingiro ari 1, 10 * log (11/1) ≈ 10.4db yiyongera kuva 1 kugeza 10. Iyo shingiro ari 100, 10 * log (110/100) ≈ 0.4db yiyongera. Iyo shingiro rihindutse, ubwiyongere bwuzuye bwuzuye bukura muburyo butandukanye, buhuye nibyo abantu babona.
RSSI ni ikimenyetso cyerekana ibimenyetso byakiriwe. Nukuvuga, uko agaciro ka RSSI nini, niko ibimenyetso byakiriwe byakiriwe. Ariko, ntibisobanura ko uko agaciro ka RSSI nini, ari byiza. Kuberako akenshi ari nkenerwa gukomeza imbaraga nkizo nini, gusubiramo byinshi birakenewe hagati, kandi ikiguzi ni kinini. Ntabwo ari ngombwa. Mubisanzwe, ni 0 ~ - 70dbm.
Ibyavuzwe haruguru nibisobanuro byubumenyi bwakiriwe bwerekana ibimenyetso (RSSI) bwazanywe na Shenzhen HDV Phoelectric Technology Co., Ltd., nisosiyete ikora itumanaho ryiza. Murakaza neza kuriipererezatwe kuri serivisi nziza.