Beidou Navigation Satellite System (BDS, eo hape e tsejoang e le COMPASS, phetolelo ea Sechaena: BeiDou) ke mokhoa oa lefats'e oa ho tsamaea ka sathelaete o ikemetseng o ntlafalitsoeng ke China. Ke sistimi ea boraro e holileng ea ho tsamaisa sathelaete e latelang GPS le GLONASS.
Moloko oa Beidou I
Kabo ea frequency ea Beidou Generation I haholo-holo e kenyelletsa lihlopha tsa Radio Determination Satellite Service (RDSS), tse arotsoeng ka ho khetheha ka lihlopha tsa uplink le downlink:
a) Sehlopha sa Uplink: Sehlopha sena se sebelisetsoa lisebelisoa tsa basebelisi ho fetisetsa lipontšo ho lisathelaete, tse nang le maqhubu a 1610MHz ho isa ho 1626.5MHz, tseo e leng tsa L-band. Moralo ona oa sehlopha o lumella lisebelisoa tsa fatše ho romella likopo tsa boemo le tlhaiso-leseling e 'ngoe ea bohlokoa ho lisathelaete.
b) Sehlopha sa Downlink: Sehlopha sena se sebelisetsoa lisathelaete ho fetisetsa melaetsa ho lisebelisoa tsa basebelisi, tse nang le maqhubu a 2483.5MHz ho isa ho 2500MHz, tseo e leng tsa S-band. Moralo ona oa sehlopha o thusa li-satellite ho fana ka tlhaiso-leseling ea ho sesa, data ea ho beha maemo, le lits'ebeletso tse ling tse hlokahalang ho lisebelisoa tsa fatše.
Hoa hlokomeleha hore kabo ea frequency ea Beidou Generation I e ne e etselitsoe ho fihlela litlhoko tsa tekheniki le litlhoko tsa ho nepahala tsa nako eo. Ka tsoelo-pele ea theknoloji le lintlafatso tse tsoelang pele tsamaisong ea Beidou, meloko e ileng ea latela, ho kenyeletsoa Beidou Generation II le III, e amohetse lihlopha tse fapaneng tsa maqhubu le mekhoa ea ho feto-fetoha ha matšoao ho fana ka lits'ebeletso tse nepahetseng le tse tšepahalang haholoanyane tsa ho tsamaisa le ho beha maemo.
Moloko oa Beidou II
Beidou Generation II, sistimi ea moloko oa bobeli oa Beidou Navigation Satellite System (BDS), ke sistimi e fumanehang lefatšeng ka bophara ea sathelaete e ikemetseng e ntlafalitsoeng ke China. Ho aha holim'a motheo oa Beidou Generation I, e ikemiselitse ho fana ka lits'ebeletso tsa maemo a holimo, tse ts'epahalang haholo, tsa ho tsamaea le tsa nako (PNT) ho basebelisi lefatšeng ka bophara. Sistimi e na le likarolo tse tharo: sebaka, fatše le mosebelisi. Karolo ea sebaka e kenyelletsa lisathelaete tse ngata tsa ho sesa, karolo ea fatše e kenyelletsa liteishene tsa taolo e kholo, liteishene tsa ho beha leihlo, le liteishene tsa uplink, athe karolo ea basebelisi e na le lisebelisoa tse fapaneng tse amohelang.
Kabo ea frequency ea Beidou Generation II e kenyelletsa lihlopha tse tharo: B1, B2, le B3, tse nang le liparamente tse latelang:
a) Sehlopha sa B1: Maqhubu a maqhubu a 1561.098MHz ± 2.046MHz, haholo-holo a sebelisetsoang ho tsamaea le lits'ebeletso tsa maemo.
b) Sehlopha sa B2: Maqhubu a maqhubu a 1207.52MHz ± 2.046MHz, hape a sebelisetsoa litšebeletso tsa sechaba, a sebetsa hammoho le sehlopha sa B1 ho fana ka bokhoni ba ho beha maemo a mabeli bakeng sa ho nepahala ha maemo.
c) Sehlopha sa B3: Maqhubu a maqhubu a 1268.52MHz ± 10.23MHz, haholo-holo a sebelisetsoang litšebeletso tsa sesole, a fana ka ho nepahala ha boemo bo phahameng le bokhoni ba ho thibela tšitiso.
Moloko oa Beidou III
Beidou Navigation System ea moloko oa boraro, eo hape e tsejoang ka hore ke Beidou-3 Global Navigation Satellite System, ke sistimi e fumanehang lefatšeng ka bophara ea sathelaete e hahiloeng ka boikemelo le ho sebetsoa ke China. E fihletse ho tlola ho tloha tikolohong ho ea ho lefats'e ka bophara, e fana ka maemo a holimo, a ts'epahalo e phahameng, ts'ebetso ea ho tsamaea le lits'ebeletso tsa nako ho basebelisi lefats'eng ka bophara. Beidou-3 e fana ka lipontšo tse ngata tse bulehileng tsa lits'ebeletso ho pholletsa le lihlopha tsa B1, B2, le B3, ho kenyeletsoa B1I, B1C, B2a, B2b, le B3I. Kabo ea maqhubu a matšoao ana ke a latelang:
a) B1 Band: B1I: Maqhubu a Setsi sa 1561.098MHz ± 2.046MHz, lets'oao la motheo le sebelisoang haholo lisebelisoa tse fapaneng tsa ho tsamaisa; B1C: Maqhubu a Bohareng a 1575.420MHz ± 16MHz, lets'oao la mantlha le tšehetsang lisathelaete tsa Beidou-3 M/I 'me le tšehetsoa ke li-terminals tse ncha, tse phahameng.
b) Sehlopha sa B2: B2a: Maqhubu a Setsi sa 1176.450MHz ± 10.23MHz, hape ke lets'oao la mantlha le tšehetsang li-satellite tsa Beidou-3 M/I 'me le fumaneha liteisheneng tse ncha, tse phahameng tsa mehala; B2b: Maqhubu a Bohareng a 1207.140MHz ± 10.23MHz, a tšehetsa lisathelaete tsa Beidou-3 M/I empa a fumaneha feela liteisheneng tsa mehala tse phahameng tse khethiloeng.
c) Sehlopha sa B3: B3I: Maqhubu a Setsi sa 1268.520MHz ± 10.23MHz, a tšehetsoeng ke lisathelaete tsohle tsa Beidou Generation II le III, ka tšehetso e babatsehang ho tloha ho mefuta e mengata, li-multi-frequency modules.
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Nako ea poso: Sep-25-2024