Iyo Beidou Navigation Satellite System (BDS, inozivikanwawo seCOMPASS, kududzira kweChinese: BeiDou) inzira yepasirese yesatellite yekufambisa yakazvimiririra yakagadziridzwa neChina. Ndiyo yechitatu yakakura setiraiti yekufambisa system inotevera GPS neGLONASS.
Beidou Generation I
Iyo frequency bhendi yekugovera yeBeidou Generation I inonyanya kusanganisira iyo Radio Determination Satellite Service (RDSS) mabhendi, akakamurwa chaizvo kuita uplink uye downlink mabhendi:
a) Uplink Band: Iri bhendi rinoshandiswa kumidziyo yemushandisi kutumira masaini kumasetelliti, ane frequency renji ye1610MHz kusvika 1626.5MHz, yeL-bhendi. Iyi bhendi dhizaini inobvumira midziyo yepasi kutumira zvikumbiro zvekumisikidza uye rumwe ruzivo rwakakodzera kune satellite.
b) Downlink Band: Iri bhendi rinoshandiswa setiraiti kutumira masaini kumidziyo yemushandisi, ine frequency renji ye2483.5MHz kusvika 2500MHz, yeS-bhendi. Iyi bhendi dhizaini inogonesa satellite kupa ruzivo rwekufambisa, data yekumisikidza, uye mamwe masevhisi anodiwa kumidziyo yepasi.
Zvinokosha kuziva kuti frequency band kugoverwa kweBeidou Generation I yakanyatsogadzirirwa kusangana nezvinodiwa zvetekinoroji uye kumisa kurongeka kwezvido zvenguva iyoyo. Nekufambira mberi kwetekinoroji uye kuenderera mberi kukwidziridzwa kuBeidou system, zvizvarwa zvinotevera, kusanganisira Beidou Generation II uye III, zvakatora mabhendi akasiyana-siyana uye masaini modulation nzira kuti dzipe yakakwirira-chaiyo uye yakavimbika yekufambisa uye yekumisikidza masevhisi.
Beidou Generation II
Beidou Generation II, chizvarwa chechipiri cheBeidou Navigation Satellite System (BDS), inzira inowanikwa pasi rose setiraiti yekufambisa yakazvimirira yakagadziridzwa neChina. Kuvaka pamusoro penheyo yeBeidou Generation I, ine chinangwa chekupa yakakwirira-chaiyo, yakakwirira-kuvimbika chinzvimbo, kufamba, uye nguva (PNT) masevhisi kune vashandisi pasi rese. Iyo sisitimu ine zvikamu zvitatu: nzvimbo, pasi, uye mushandisi. Chikamu chemuchadenga chinosanganisira akawanda ekufambisa setiraiti, chikamu chepasi chinosanganisira master control station, zviteshi zvekutarisa, uye uplink zviteshi, nepo chikamu chemushandisi chinosanganisira dzakasiyana siyana dzekugamuchira.
Iyo frequency bhendi yekugovera yeBeidou Generation II inonyanya kusanganisa mabhendi matatu: B1, B2, uye B3, ine chaiwo maparamita anotevera:
a) B1 Band: Frequency renji ye1561.098MHz ± 2.046MHz, inonyanya kushandiswa kufambiswa kwevanhu uye masevhisi ekuisa.
b) B2 Band: Frequency renji ye1207.52MHz ± 2.046MHz, zvakare inonyanya kushandiswa mabasa echiuto, ichishanda padivi nebhendi reB1 kupa huviri-frequency yekumisikidza kugona kwekusimudzira kwenzvimbo.
c) B3 Band: Frequency renji ye1268.52MHz ± 10.23MHz, inonyanya kushandiswa kumabasa echiuto, ichipa humbowo hwepamusoro uye masimba ekurwisa kupindira.
Beidou Generation III
Yechitatu-chizvarwa Beidou Navigation System, inozivikanwawo seBeidou-3 Global Navigation Satellite System, inzvimbo inowanikwa pasi rose setiraiti yekufambisa system yakazvimiririra yakavakwa uye inoshandiswa neChina. Iyo yakawana kusvetuka kubva mudunhu kuenda kune yepasirese kufukidzwa, ichipa yakakwirira-chaiyo, yakakwirira-kuvimbika chinzvimbo, kufamba, uye nguva masevhisi kune vashandisi pasi rese. Beidou-3 inopa akawanda akavhurika sevhisi masaini mukati meB1, B2, uye B3 mabhendi, anosanganisira B1I, B1C, B2a, B2b, uye B3I. Iyo frequency kugoverwa kwezvikwangwani izvi ndeiyi:
a) B1 Band: B1I: Center frequency ye1561.098MHz ± 2.046MHz, chiratidzo chekutanga chinoshandiswa zvakanyanya mumidziyo yakasiyana-siyana yekufambisa; B1C: Center frequency ye1575.420MHz ± 16MHz, chiratidzo chekutanga chinotsigira Beidou-3 M/I satellite uye inotsigirwa neazvino, epamusoro-yekupedzisira nharembozha.
b) B2 Band: B2a: Center frequency ye1176.450MHz ± 10.23MHz, zvakare chiratidzo chekutanga chinotsigira Beidou-3 M/I satellite uye inowanikwa pane nyowani, yepamusoro-yekupedzisira nharembozha; B2b: Center frequency ye1207.140MHz ± 10.23MHz, inotsigira Beidou-3 M/I setiraiti asi inongowanikwa pane yakasarudzwa yepamusoro-yekupedzisira nharembozha.
c) B3 Band: B3I: Center frequency ye1268.520MHz ± 10.23MHz, inotsigirwa nemasetellite ese ari maviri Beidou Generation II uye III, nerutsigiro rwakanakisa kubva kune akawanda-modhi, akawanda-frequency modules.
Chengdu Concept Microwave Technology CO., Ltd inyanzvi inogadzira zvikamu zve5G/6G RF.nokutisatellite kutaurirana muChina, kusanganisira iyo RF lowpass sefa, highpass sefa, bandpass sefa, notch sefa/bhendi stop filter, duplexer, Power divider uye directional coupler. Ese anogona kugadzirwa zvinoenderana nezvinodiwa zvako.
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Nguva yekutumira: Sep-25-2024