Nidaamka dayax-gacmeedka ee Beidou (BDS, oo sidoo kale loo yaqaan COMPASS, tarjumaad Shiine: BeiDou) waa nidaam caalami ah oo dayax gacmeedka si madax banaan u sameeyay Shiinaha. Waa nidaamka saddexaad ee qaan-gaadhka ah ee dayax-gacmeedka ee raacaya GPS iyo GLONASS.
Jiilka Beidou I
Qoondaynta band soo noqnoqda ee Beidou Generation I ayaa ugu horrayn ku lug leh guutooyinka Adeegga Go'aaminta Satellite Radio (RDSS), gaar ahaan loo qaybiyay kooxo kor iyo hoos isugu xidhan:
a) Kooxda Uplink: Kooxdan waxaa loo isticmaalaa qalabka isticmaala si ay u gudbiyaan calaamadaha satalaytka, oo leh inta jeer ee 1610MHz ilaa 1626.5MHz, oo ka tirsan L-band. Naqshadaynta kooxdani waxay u oggolaanaysaa qalabka dhulka inuu u soo diro codsiyada meelaynta iyo macluumaadka kale ee khuseeya satalaytka.
b) Kooxda Downlink: Kooxdan waxaa loo isticmaalaa satalaytka si ay ugu gudbiyaan calaamadaha qalabka isticmaalaha, oo leh inta jeer ee kala duwan ee 2483.5MHz ilaa 2500MHz, oo ka tirsan S-band. Nakhshad kooxeedkan ayaa awood u siinaysa satalaytka inay bixiyaan macluumaadka socodka, meelaynta xogta, iyo adeegyada kale ee lagama maarmaanka u ah qalabka dhulka.
Waxaa xusid mudan in qoondaynta band soo noqnoqda ee Beidou Generation I waxaa ugu horrayn loogu talagalay in lagu buuxiyo shuruudaha farsamada iyo meelaynta shuruudaha saxda ah ee wakhtigaas. Horumarin tignoolajiyadeed iyo casriyeyn joogto ah oo lagu sameeyay nidaamka Beidou, jiilalka xiga, oo ay ku jiraan Beidou Generation II iyo III, waxay qaateen xadhkaha soo noqnoqda ee kala duwan iyo hababka habaynta calaamadaha si loo bixiyo saxnaan sare oo la isku halayn karo iyo adeegyo meelayn.
Jiilka Beidou II
Jiilka Beidou II, nidaamka jiilka labaad ee Beidou Navigation Satellite System (BDS), waa nidaam caalami ah oo la heli karo oo dayax gacmeedka si madax banaan u horumariyey Shiinaha. Iyadoo lagu dhisayo aasaaska Jiilka I ee Beidou, waxay higsanaysaa inay bixiso adeegyo sax ah oo sarreeya, meelayn la isku halleyn karo, hagidda, iyo wakhtiga (PNT) isticmaalayaasha adduunka oo dhan. Nidaamku wuxuu ka kooban yahay saddex qaybood: meel, dhul, iyo isticmaale. Qaybta booska waxaa ku jira satalaytka hagidda oo badan, qeybta dhulka waxay ka kooban tahay saldhigyada kontoroolka sare, saldhigyada kormeerka, iyo saldhigyada kor u kaca, halka qeybta adeegsaduhu ay ka kooban yihiin qalabyo kala duwan.
Qoondaynta band soo noqnoqda ee Beidou Generation II ugu horrayn ka kooban saddex qaybood: B1, B2, iyo B3, oo leh xad gaar ah sida soo socota:
a) Kooxda B1: Xadka soo noqnoqda ee 1561.098MHz ± 2.046MHz, oo inta badan loo isticmaalo hagidda iyo meelaynta rayidka.
b) Kooxda B2: Xadka soo noqnoqda ee 1207.52MHz ± 2.046MHz, oo sidoo kale inta badan loo isticmaalo adeegyada rayidka ah, iyada oo la shaqaynaysa kooxda B1 si ay u bixiso awoodaha meelaynta laba-soo noqnoqda ah ee kor loogu qaadayo saxnaanta meelaynta.
c) Kooxda B3: Xadka soo noqnoqda ee 1268.52MHz ± 10.23MHz, oo inta badan loo isticmaalo adeegyada milatariga, oo bixiya saxnaanta meelaynta sare iyo awoodaha ka hortagga faragelinta.
Jiilka Beidou III
Jiilka saddexaad ee Beidou Navigation System, oo sidoo kale loo yaqaan Beidou-3 Global Navigation Satellite System, waa hab caalami ah oo la heli karo oo dayax gacmeedka si madax banaan u dhisay oo uu maamulo Shiinaha. Waxa ay gaadhay heer gobol ilaa heer caalami, iyada oo siisay sax sare, meelayn la isku hallayn karo, hagitaan, iyo adeegyo wakhti isticmaalayaasha adduunka oo dhan. Beidou-3 waxay bixisaa calaamado adeeg furan oo badan oo ku baahsan B1, B2, iyo B3, oo ay ku jiraan B1I, B1C, B2a, B2b, iyo B3I. Qoondaynta inta jeer ee calaamadahani waa sida soo socota:
a) B1 Band: B1I: Inta jeer ee xarunta 1561.098MHz ± 2.046MHz, calaamad aasaasi ah oo si ballaaran loo isticmaalo qalabyada kala duwan; B1C: Inta jeer ee xarunta 1575.420MHz ± 16MHz, calaamada aasaasiga ah ee taageeraya dayax-gacmeedyada Beidou-3 M/I oo ay taageerayaan kuwa cusub, terminaalka mobilada ee dhamaadka-sare.
b) B2 Band: B2a: Inta jeer ee xarunta 1176.450MHz ± 10.23MHz, sidoo kale calaamadda aasaasiga ah ee taageeraya satalaytyada Beidou-3 M/I oo laga heli karo kuwa cusub, terminaalka mobilada ee dhamaadka-sare; B2b: Inta jeer ee xarunta 1207.140MHz ± 10.23MHz, taageerta Beidou-3 M/I dayax gacmeedyada laakiin kaliya la heli karo on terminal mobile dhamaadka-dhamaadka sare.
c) B3 Band: B3I: Inta jeer ee xarunta 1268.520MHz ± 10.23MHz, oo ay taageerayaan dhammaan satalaytka labada Beidou Generation II iyo III, oo leh taageero aad u fiican oo ka socota qaabab badan, qaybo badan oo soo noqnoqonaya.
Chengdu Concept Microwave Technology CO., Ltd waa soo saaraha xirfadeed ee qaybaha 5G/6G RFwaayoisgaarsiinta dayax-gacmeedka ee Shiinaha, oo ay ku jiraan shaandhada hoose ee RF, filter filter-ka sare, filter filter, filter filter / band stop filter, duplexer, awood qaybiye iyo lammaane jihada. Dhammaantood waxaa lagu habeyn karaa iyadoo loo eegayo shuruudahaaga.
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Waqtiga boostada: Seb-25-2024