Sateliti taamacogo ɲuman-lajɛba la, frequency source ka baarakɛcogo bɛ sistɛmu jɔyɔrɔfalen tiɲɛni n’a sabatili dantigɛ k’a ɲɛsin a yɛrɛ ma. I n’a fɔ BeiDou Sistɛmu (BDS) bɛ tali kɛ kosɛbɛ baarakɛminɛnw na i n’a fɔ bolifɛnw bolicogo, IoT, ani waati ɲɔgɔndan, ɲinini bɛ ka caya ka taa a fɛ ka kɛ fɛnw ye minnu bɛ baara kɛ kosɛbɛ, minnu fanga ka dɔgɔ, minnu ka dɔgɔn, minnu bɛ kɛ ka caya. TT53H4-10.000-33NQDTN 10 MHz TCXO min bɛ bɔ Suzhou Hangjing, o ye waati ɲɛnabɔcogo sabatilenba ye min dabɔra tigitigi walasa ka o ɲinini in dafa.
Nafa koloma min bɛ BeiDou baarakɛminɛnw na
BeiDou jaabilan kɔnɔ, k’a ta RF ɲɛfɛla la ani sigida oscillateur bɔli la ka se baseband sampling ni waati sinsinni ma, reference clock min sabatilen don kosɛbɛ, o nafa ka bon. TT53H4 10 MHz TCXO jɔyɔrɔ ka bon kosɛbɛ nin yɔrɔ koloma ninnu na:
Siginidenw sɔrɔli ni u nɔfɛtaama seko bonyalen
Nin minɛn in bɛ frequency sabatili ɲumanba di:
Frequency Stability (Fɛrɛnkan sabatili):±0,5 ppm (–40 degere ka se +85 degere ma ) .
Fɔlɔ frequence muɲuni:±1,0 ppm ye
BeiDou taamasiyɛn jaabi la, o bɛ baara kɛ ni nin ye:
Frequency offset fili dɔgɔyara
Doppler ɲinini yɔrɔ min ka dɔgɔn
Sateliti taamasiyɛn sɔrɔli teliya teliya
2. Nin ye dakun ɲininen in bamanankan bamanankan na, k’a to baarakɛcogo, ofisiyali ani fɛɛrɛko kumasen surun dɔ mara.
Yɔrɔw sigicogo ɲuman ani ɲɔgɔndan teliya
Fɛrɛnkan filiw TCXO kɔnɔ, olu bɛ baara kɛ ni waati filiw ye, minnu bɛ nɔ bila pseudorange jatebɔw la. TT53H4 bɛ filiw dalajɛli dɔgɔya kosɛbɛ, minnu bɛ sɔrɔ sigida caman ɲɔgɔnna caman fɛ, o sababu fɛ:
Voltage Stability (Tɔnsiyɔn sabatili):±0,2 ppm (Vcc ±5%) ye .
Doni sabatili:±0,2 ppm ye
O b’a to BeiDou terminalw bɛ jɔyɔrɔfalen baarakɛcogo sabatilen mara hali sigidaw la minnu bɛ fanga sɔrɔ.
3.Fasa dɔgɔman mankan dilanni walasa ka taamasiyɛn barikama baarakɛcogo ɲɛ
Nin modɛli in bɛ fasa mankan baarakɛcogo ɲuman jira:
–97 dBc/Hz @ 10 Hz ye
–125 dBc/Hz @ 100 Hz. Bamako, Mali
–145 dBc/Hz @ 1 kHz ye
–155 dBc/Hz @ 100 kHz ye
Nafaw:
Siginidenw nɔfɛtaama barikama fanga bonyalen
Jaabikɛla ka taamasiyɛn ɲɛnabɔlen-ni-mankan hakɛ (SNR) .
Biti fili hakɛ dɔgɔyara (BER) .
O nafa ka bon kosɛbɛ sigida gɛlɛnw na i n’a fɔ dugubaw kɔnɔ kɔw ani sokɔnɔyɔrɔw.
4. Dɛmɛ don BeiDou Timing ni Holdover la
Waati jatebɔminɛnw na, ni sateliti taamasiyɛnw tununna waati dɔɔnin kɔnɔ, TCXO ka kan ka sigida waati tɛmɛsira mara. TT53H4 bɛ ninnu di:
Kɔrɔya hakɛ dɔgɔman:±1 ppm/san
Daminɛ teliya-Ka wuli:5 ms
O b’a to sistɛmu bɛ waati bɔli sabatilen mara (misali la, 10 MHz + PPS) hali waati kunkurunnin-sinɔbila bɔnɛ waati.
Fɛn dilannenw ɲɛfɔli kunbabaw
Paramɛtiri jɔnjɔnw
Tɔgɔla-fɛrɛnkan:10.000 MHz ye
Bɔli suguya:HCMOS (HCMOS) ye
Voltage de fourniture: 3.3V
Foroko hakɛ:SMD 5,0 × 3,2 mm (a dilancogo ka dɔgɔn) .
Nafa minnu bɛ sɔrɔ kuran baarakɛcogo la
Baarabolodacogo:45% ~ 55% (simɛtiri ɲumanba) .
Wuli/Bini Waati:6 ns (a bɛ bɛn ni teliya-teliya nizɛri sitɛmuw ye) .
Sisan Baarakɛcogo:6 mA dɔrɔn (setigiya dɔgɔman-dilancogo) .
Wide Temperature Range & Daŋaniyaba
Baarakɛcogo funteni:–40 degere ~ +85 degere
A bɛ se ka kɛ dannaya sɛgɛsɛgɛli caman fɛ:
>>Funteni sɛgɛsɛgɛli (1000 cycles) .
>>Funteni ni nɛnɛba (85℃/ 85% RH) .
>>Yɛrɛyɛrɛli / Jiginni / ESD
Frequency drift (Drift) min bɛ kɛ:Bɛɛ maralen bɛ ±1 ppm kɔnɔ
III.Aplikasi kɛcogo minnu bɛ kɛ cogoya la
TT53H4-10.000-33NQDTN bɛ baara kɛ kosɛbɛ ni ninnu ye:
BeiDou / GNSS Sɔrɔbagaw
Mobili bolicogo
Bololabaarakɛyɔrɔw
Drone jɔyɔrɔfalen
Communication & Synchronisation Minɛnw
5G selilɛri misɛnninw
Waati sinsinni baarakɛminɛnw
Réseau waati jateminɛminɛnw
Industrial & IoT Baarakɛcogo
Grid hakilitigi
Industriw ka kɔlɔsili siraw
Kunnafoni sɔrɔli min ka bon-ni
IV.Mun na an bɛ TT53H4 sugandi?
Ni an y’a suma ni kristalɛ-yɛrɛyɛrɛ jɔnjɔnw (XO) ye ani OCXO minnu musaka ka bon-, TT53H4 bɛ balansi ɲuman sɔrɔ baarakɛcogo ni musaka cɛ:
ppm-nivo sabatili sanfɛ walasa ka BeiDou baarakɛcogo wajibiyalenw dafa
Fasa mankan dɔgɔyali dilanni walasa ka baara kɛcogo ɲɛ sigida gɛlɛnw na
Hakɛ fitinin + fanga dɔgɔyali, a ka ɲi minɛnw kɔnɔ minnu bɛ don a kɔnɔ
Daŋaniyaba ka ɲɛsin izini sigidaw ma minnu ka gɛlɛn
Musaka-baarakɛcogo ɲumanba ka ɲɛsin baarakɛminɛnba-labɔli ma
V. Kuncɛli
BeiDou Sistɛmu bɛ ka taa a fɛ ka taa ɲɛ ka taa a fɛ ka ɲɛsin tiɲɛni ma, fanga dɔgɔyali, ani a dɔgɔyali, TCXO kɛra core frequency reference ye terminal minɛnw na. TT53H4-10.000-33NQDTN, n’a ka frequency sabatili ɲuman, fasa mankan baarakɛcogo dɔgɔman, ani dannayaba, o bɛ waati jusigilan jɔnjɔn ni dannayalen di BeiDou taamacogo, waati ɲɔgɔndan, ani kumaɲɔgɔnya siratigɛw ma.
A ka ca ni kristalɛ wulilan dɔrɔn ye-a ye "dusukun tantanni sɔrɔyɔrɔ" kɔrɔlen ye min bɛ sistɛmu baarakɛcogo n'a sabatili sabati.