Sistemụ Satellite Navigation Beidou (BDS, makwaara dị ka COMPASS, ntụgharị asụsụ China: BeiDou) bụ sistemụ satịlaịtị zuru ụwa ọnụ nke China mepụtara n'onwe ya. Ọ bụ sistemụ satịlaịtị nke atọ tozuru oke na-eso GPS na GLONASS.
Ọgbọ Beidou I
Oke bandwit nke Beidou Generation I bụ nke gụnyere ụgbụ redio Determination Satellite Service (RDSS), nke kewara kpọmkwem n'ime eriri elu na downlink:
a) Uplink Band: A na-eji eriri a maka akụrụngwa onye ọrụ na-ebuga akara na satịlaịtị, yana ọnụọgụ ugboro nke 1610MHz ruo 1626.5MHz, bụ nke L-band. Nke a gbalaga imewe na-enye ohere ala akụrụngwa izipu n'ọnọdu arịrịọ na ndị ọzọ mkpa ozi na Satellites.
b) Downlink Band: A na-eji eriri a maka satịlaịtị na-ebuga akara na akụrụngwa onye ọrụ, yana ọnụọgụ ugboro nke 2483.5MHz ruo 2500MHz, bụ nke S-band. Nke a gbalaga imewe na-enyere Satellites inye ozi igodo, n'ọnọdu data, na ndị ọzọ dị mkpa ọrụ na ala akụrụngwa.
Ọ bụ ihe kwesịrị ịrịba ama na e mere oke egwu ugboro ugboro nke Beidou Generation I iji mezuo ihe achọrọ teknụzụ yana idobe ihe ziri ezi chọrọ n'oge ahụ. Site na ọganihu teknụzụ yana nkwalite na-aga n'ihu na sistemụ Beidou, ọgbọ ndị na-esote, gụnyere Beidou Generation II na III, nakweere eriri ugboro dị iche iche na ụzọ mgbanwe mgbaàmà iji nye nkenke dị elu na nke a pụrụ ịdabere na ya na igodo na ntinye ọrụ.
Ọgbọ Beidou II
Beidou Generation II, usoro ọgbọ nke abụọ nke Beidou Navigation Satellite Sistemu (BDS), bụ sistemu ịnyagharị satịlaịtị a na-enweta n'ụwa niile nke China mepụtara n'onwe ya. N'ịwulite n'elu ntọala Beidou Generation I, ọ na-achọ ịnye ndị ọrụ n'ụwa niile ọrụ n'ụzọ ziri ezi, ntụkwasị obi dị elu, igodo, na oge (PNT). Usoro ahụ nwere akụkụ atọ: oghere, ala na onye ọrụ. Akụkụ oghere na-agụnye ọtụtụ satịlaịtị igodo, akụkụ ala na-agụnye ọdụ njikwa njikwa, ụlọ ọrụ nlekota, na ọdụ elu, ebe akụkụ onye ọrụ nwere ngwaọrụ nnabata dị iche iche.
Oke bandwit nke Beidou Generation II bụ nke nwere ụzọ atọ: B1, B2, na B3, nwere oke dị ka ndị a:
a) B1 Band: Ugboro ugboro nke 1561.098MHz ± 2.046MHz, nke a na-ejikarị eme ihe maka igodo ndị nkịtị na ntinye ọrụ.
b) B2 Band: Ugboro ugboro nke 1207.52MHz ± 2.046MHz, nke a na-ejikarị eme ihe maka ọrụ ndị nkịtị, na-arụ ọrụ n'akụkụ B1 band iji nye ike n'ọkwa ugboro abụọ maka nkwalite nguzozi nke ọma.
c) B3 Band: Ugboro ugboro nke 1268.52MHz ± 10.23MHz, nke a na-ejikarị eme ihe maka ọrụ agha, na-enye ọkwa dị elu nke ọma na ikike mgbochi.
Beidou Generation III
Sistemụ ịnyagharị Beidou nke ọgbọ nke atọ, nke a makwaara dị ka Sistemụ Satịlaịtị Navigation zuru ụwa ọnụ Beidou-3, bụ sistemụ satịlaịtị a na-enweta n'ụwa niile n'onwe ya nke China rụrụ ma na-arụkwa ya. O nwetala mmụba site na mpaghara ruo na mkpuchi zuru ụwa ọnụ, na-enye ndị ọrụ zuru ụwa ọnụ nkenke nkenke, ntụkwasị obi dị elu, igodo, na oge ọrụ. Beidou-3 na-enye ọtụtụ mgbaama ọrụ mepere emepe gafee B1, B2, na B3 band, gụnyere B1I, B1C, B2a, B2b, na B3I. Oke oge nke akara ndị a bụ ndị a:
a) B1 Band: B1I: Centre ugboro nke 1561.098MHz ± 2.046MHz, mgbama bụ isi nke a na-ejikarị na ngwaọrụ igodo dị iche iche; B1C: Ugboro etiti nke 1575.420MHz ± 16MHz, mgbama bụ isi na-akwado satịlaịtị Beidou-3 M/I yana ọnụ ụzọ ekwentị ọhụrụ na-adị elu na-akwado.
b) B2 Band: B2a: Ugboro etiti nke 1176.450MHz ± 10.23MHz, bụkwa akara ngosi bụ isi na-akwado Satellites Beidou-3 M/I ma dị na ọdụ ekwentị ọhụrụ, dị elu; B2b: Ugboro etiti nke 1207.140MHz ± 10.23MHz, na-akwado Satellites Beidou-3 M/I mana ọ dị naanị na ọdụ ekwentị mkpanaka ahọpụtara.
c) B3 Band: B3I: Centre ugboro nke 1268.520MHz ± 10.23MHz, kwadoro satịlaịtị niile na Beidou Generation II na III, na nkwado dị mma site na multi-mode, multi-frequency modules.
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Oge nzipu: Sep-25-2024