I-Beidou Navigation Satellite System (BDS, ekwabizwa ngokuba yiCOMPASS, uguqulelo lwesiTshayina: BeiDou) yinkqubo yokukhangela ngesathelayithi yehlabathi ngokuzimeleyo ephuhliswe yiChina. Yinkqubo yesithathu yokuhamba ngesathelayithi evuthiweyo ilandela iGPS kunye neGLONASS.
Isizukulwana sikaBeidou I
Ulwabiwo lwebhendi yefrikhwensi yeBeidou Generation I ikakhulu ibandakanya iibhendi zeRadio Determination Satellite Service (RDSS), ezahlulwe ngokuthe ngqo zaba ziibhendi ezinyukayo kunye nezisezantsi:
a) Ibhendi ye-Uplink: Eli bhendi lisetyenziselwa izixhobo zabasebenzisi ukuhambisa imiqondiso kwiisathelayithi, ezinoluhlu lwamaza okujikeleza 1610MHz ukuya kwi-1626.5MHz, eyeye-L-band. Olu yilo lwebhendi luvumela izixhobo zomhlaba ukuba zithumele izicelo zokubeka kunye nolunye ulwazi olufanelekileyo kwiisathelayithi.
b) Ibhendi ye-Downlink: Eli bhanti lisetyenziselwa iisathelayithi ukuhambisa imiqondiso kwisixhobo somsebenzisi, kunye noluhlu lwamaza ka-2483.5MHz ukuya ku-2500MHz, oluye-S-band. Olu yilo lwebhendi luvumela iisathelayithi ukuba zibonelele ngolwazi lokuhamba, idatha yokubeka, kunye nezinye iinkonzo eziyimfuneko kwizixhobo zomhlaba.
Kuyaphawuleka ukuba ulwabiwo lwebhendi yamaza eBeidou Generation I yayiyilwe ngokuyintloko ukuhlangabezana neemfuno zobugcisa kunye nokubeka iimfuno zokuchaneka kwelo xesha. Ngenkqubela phambili yetekhnoloji kunye nokuphuculwa okuqhubekayo kwinkqubo ye-Beidou, izizukulwana ezilandelayo, kuquka i-Beidou Generation II kunye ne-III, zamkele iibhendi zamaza ohlukeneyo kunye neendlela zokumodareyitha umqondiso ukubonelela ngokuchaneka okuphezulu kunye nokuthembeka ngakumbi ukuhamba kunye neenkonzo zokubeka indawo.
Isizukulwana sikaBeidou II
I-Beidou Generation II, inkqubo yesizukulwana sesibini se-Beidou Navigation Satellite System (BDS), yinkqubo yokuhamba ngesathelayithi efikeleleke kwihlabathi ngokuzimeleyo ephuhliswe yiChina. Ukwakha phezu kwesiseko seBeidou Generation I, ijolise ekuboneleleni ngokuchaneka okuphezulu, ukuthembeka okuphezulu, ukukhangela, kunye neenkonzo zexesha (PNT) kubasebenzisi kwihlabathi liphela. Inkqubo inamacandelo amathathu: indawo, umhlaba kunye nomsebenzisi. Inxalenye yendawo ibandakanya iisathelayithi ezininzi zokuhamba, icandelo lomhlaba libandakanya izikhululo zokulawula iinkosi, izitishi zokubeka iliso, kunye nezikhululo ze-uplink, ngelixa icandelo lomsebenzisi liquka izixhobo ezahlukeneyo zokufumana.
Ulwabiwo lwebhendi yefrikhwensi yeBeidou Generation II ikakhulu ibandakanya amaqela amathathu: B1, B2, kunye neB3, eneparameters ezithile ngolu hlobo lulandelayo:
a) Ibhendi ye-B1: Uluhlu lokuphindaphinda lwe-1561.098MHz ± 2.046MHz, lusetyenziswa ikakhulu kulawulo loluntu kunye neenkonzo zokubeka.
b) Ibhendi ye-B2: Uluhlu lweefrikhwensi lwe-1207.52MHz ± 2.046MHz, ekwasetyenziselwa ikakhulu iinkonzo zoluntu, esebenza ecaleni kwebhendi ye-B1 ukubonelela ngesakhono sokuma okuphindwe kabini ukuchaneka kokuma okuphuculweyo.
c) Ibhendi ye-B3: Uluhlu lokuphindaphinda lwe-1268.52MHz ± 10.23MHz, olusetyenziswa ikakhulu kwiinkonzo zomkhosi, ezinikezela ngokuchaneka kweendawo eziphezulu kunye namandla okuchasana nokuphazamiseka.
Isizukulwana sikaBeidou III
Isizukulwana sesithathu iBeidou Navigation System, ekwabizwa ngokuba yiBeidou-3 Global Navigation Satellite System, yinkqubo yokukhangela ngesathelayithi efikeleleka kwihlabathi ngokuzimeleyo eyakhiwe kwaye iqhutywa yiChina. Iphumelele umtsi ukusuka kwingingqi ukuya kugutyulo lwehlabathi, ibonelela ngokuchaneka okuphezulu, ukuthembeka okuphezulu kwindawo, ukukhangela, kunye neenkonzo zexesha kubasebenzisi kwihlabathi liphela. I-Beidou-3 inikezela ngeempawu ezininzi zenkonzo evulekileyo kuzo zonke iibhendi ze-B1, B2, kunye ne-B3, kuquka i-B1I, i-B1C, i-B2a, i-B2b, kunye ne-B3I. Ulwabiwo lwamaxesha ale miqondiso lulandelayo:
a) Ibhendi ye-B1: B1I: Ukuphindaphinda kweZiko le-1561.098MHz ± 2.046MHz, umqondiso osisiseko osetyenziswa ngokubanzi kwizixhobo ezahlukeneyo zokuhamba; I-B1C: I-Frequency Centre ye-1575.420MHz ± 16MHz, isignali ephambili exhasa ii-satellites ze-Beidou-3 M / I kunye nenkxaso entsha, i-terminal mobile terminals.
b) Ibhendi ye-B2: B2a: Ukuphindaphinda kweZiko le-1176.450MHz ± 10.23MHz, kwakhona isignali ephambili exhasa iisathelayithi zeBeidou-3 M / I kwaye zifumaneka kwii-terminals ezintsha, eziphezulu eziphezulu; I-B2b: I-Frequency Centre ye-1207.140MHz ± 10.23MHz, exhasa iisathelayithi ze-Beidou-3 M/I kodwa ifumaneka kuphela kwiitheminali eziphathwayo ezikhethiweyo eziphezulu.
c) Ibhendi ye-B3: B3I: I-Frequency Centre ye-1268.520MHz ± 10.23MHz, exhaswa zizo zonke iisathelayithi kuzo zombini iBeidou Generation II kunye ne-III, kunye nenkxaso ebalaseleyo evela kwiimodyuli ezininzi, iimodyuli ezininzi.
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Ixesha lokuposa: Sep-25-2024