Kev sib txuas lus satellite ua lub luag haujlwm tseem ceeb hauv kev siv tub rog thiab pej xeem niaj hnub no, tab sis nws qhov kev cuam tshuam tau tsav txoj kev loj hlob ntawm ntau yam kev tiv thaiv kev ua txhaum cai. Tsab xov xwm no sau luv luv rau rau lub thev naus laus zis txawv teb chaws tseem ceeb: spread spectrum, coding thiab modulation, antenna anti-jamming, on-board processing, transform-domain processing, thiab amplitude-domain processing, nrog rau cov txheej txheem txuas adaptive, tshuaj xyuas lawv cov ntsiab cai thiab daim ntawv thov.
1. Kev Siv Tshuab Spectrum Spread
Kev nthuav dav spectrum txhim kho lub peev xwm tiv thaiv kev cuam tshuam los ntawm kev nthuav dav bandwidth ntawm lub teeb liab, txo qhov ceev ntawm lub zog spectral. Direct Sequence Spread Spectrum (DSSS) siv cov lej pseudo-random los nthuav dav lub teeb liab bandwidth, faib cov zog cuam tshuam narrowband. Qhov no yog qhov tseem ceeb hauv kev sib txuas lus hauv tub rog satellite, tawm tsam kev cuam tshuam txhob txwm ua (piv txwv li, co-frequency lossis broadband noise interference) kom ntseeg tau tias muaj kev nyab xeeb thiab kev xa xov xwm txawj ntse.
2. Kev Siv Tshuab Coding thiab Modulation
Cov lej kho qhov yuam kev siab heev (piv txwv li, Turbo codes, LDPC) ua ke nrog kev hloov kho siab (piv txwv li, PSK, QAM) txhim kho kev ua haujlwm ntawm spectral thaum txo cov kev ua yuam kev uas cuam tshuam. Piv txwv li, LDPC nrog QAM siab txhim kho cov kev pabcuam satellite lag luam (piv txwv li, HDTV, internet) thiab ua kom muaj kev sib txuas lus tub rog zoo hauv cov chaw sib tw.
3. Antenna Anti-Jamming Technology
Cov kav hlau txais xov uas hloov tau thiab cov kav hlau txais xov ntse hloov kho cov qauv teeb liab kom tsis txhob muaj cov jammers. Cov kav hlau txais xov uas hloov tau coj cov nulls mus rau qhov chaw cuam tshuam, thaum cov kav hlau txais xov ntse siv ntau-array processing rau kev lim dej. Cov no yog qhov tseem ceeb hauv tub rog SATCOM los tawm tsam kev hem thawj ntawm kev ua tsov rog hluav taws xob.
4. Kev Siv Tshuab Ua Haujlwm Hauv Rooj Tsav Tsheb (OBP)
OBP ua cov teeb liab demodulation, decoding, thiab routing ncaj qha rau ntawm cov satellites, txo qhov tsis muaj zog ntawm kev xa xov hauv av. Cov ntawv thov tub rog suav nrog kev ua haujlwm hauv zos kom ruaj ntseg los tiv thaiv kev mloog thiab kev faib cov peev txheej kom zoo dua.
5. Kev Ua Haujlwm Hloov Pauv-Daim Ntawv Sau
Cov txheej txheem zoo li FFT thiab wavelet transforms hloov cov teeb liab mus rau qhov zaus lossis lub sijhawm-zaus thaj chaw rau kev lim dej cuam tshuam. Qhov no tawm tsam broadband thiab lub sijhawm hloov pauv jamming, txhim kho kev hloov pauv hauv cov chaw electromagnetic nyuaj.
6. Kev Ua Haujlwm Amplitude-Domain
Cov Limiters thiab Automatic Gain Control (AGC) tswj kev cuam tshuam loj heev (piv txwv li, xob laim lossis yeeb ncuab jamming), tiv thaiv cov receiver circuits thiab tswj kev ruaj khov ntawm qhov txuas.
7. Kev Siv Tshuab Txuas Hloov Kho
Kev hloov kho lub sijhawm tiag tiag rau coding, modulation, thiab cov ntaub ntawv tus nqi raws li cov xwm txheej channel (piv txwv li, SNR, BER) ua kom muaj kev sib txuas lus txhim khu kev qha txawm tias huab cua lossis jamming. Cov tub rog siv qhov no rau kev ua kom muaj zog hauv cov xwm txheej ua tsov rog dynamic.
Xaus lus
Cov thev naus laus zis tiv thaiv kev cuam tshuam txawv teb chaws siv ntau txoj hauv kev uas suav nrog kev ua cov cim qhia, kev sau code, thiab cov txheej txheem hloov kho. Kev siv tub rog muab qhov tseem ceeb rau kev ruaj khov thiab kev ruaj ntseg, thaum cov ntawv thov lag luam tsom mus rau kev ua haujlwm zoo. Kev nce qib yav tom ntej yuav koom ua ke AI thiab kev ua haujlwm tiag tiag los tawm tsam kev hem thawj uas hloov pauv tas li.
Chengdu Concept Microwave Technology CO., Ltd yog ib lub tuam txhab tsim khoom ntawm 5G/6G RF Cheebtsam rau kev sib txuas lus satellite hauv Suav teb, suav nrog RF lowpass filter, highpass filter, bandpass filter, notch filter/band stop filter, duplexer, Power divider thiab directional coupler. Tag nrho lawv tuaj yeem hloov kho raws li koj cov kev xav tau.
Txais tos rau peb lub vev xaib:www.concept-mw.comlos yog hu rau peb ntawm:sales@concept-mw.com
Lub sijhawm tshaj tawm: Lub Xya Hli-29-2025