Kulankhulana kwa satellite kumachita gawo lofunika kwambiri pa ntchito zamakono zankhondo ndi za anthu wamba, koma kuthekera kwake kusokonezedwa kwapangitsa kuti pakhale njira zosiyanasiyana zotsutsana ndi kusokoneza. Nkhaniyi ikufotokoza mwachidule ukadaulo waukulu zisanu ndi umodzi wakunja: kufalikira kwa ma spectrum, kulemba ma code ndi kusintha kwa ma antenna, kusanthula kwa ma on-board, kusintha kwa ma transform-domain, ndi kukonza ma amplitude-domain, pamodzi ndi njira zolumikizirana zosinthika, kusanthula mfundo ndi ntchito zawo.
1. Ukadaulo wa Spread Spectrum
Spread spectrum imawonjezera mphamvu yolimbana ndi kugwedezeka mwa kukulitsa bandwidth ya chizindikiro, kuchepetsa kuchuluka kwa ma spectral. Direct Sequence Spread Spectrum (DSSS) imagwiritsa ntchito ma code olakwika kuti iwonjezere bandwidth ya chizindikiro, kufalitsa mphamvu yosokoneza ma narrowband. Izi ndizofunikira kwambiri pakulankhulana kwa satellite yankhondo, polimbana ndi kugwedezeka mwadala (monga kusokonezeka kwa phokoso la ma frequency kapena broadband) kuti zitsimikizire kuti kutumizidwa kwa malangizo ndi nzeru kuli kotetezeka.
2. Ukadaulo wa Kupanga Ma Code ndi Kusintha Ma Module
Ma code okonza zolakwika apamwamba (monga ma Turbo code, LDPC) ophatikizidwa ndi kusintha kwa ma order apamwamba (monga PSK, QAM) amathandizira magwiridwe antchito a spectral pomwe amachepetsa zolakwika zomwe zimayambitsa kusokoneza. Mwachitsanzo, LDPC yokhala ndi QAM yapamwamba imakulitsa ntchito zama satellite zamalonda (monga HDTV, intaneti) ndikuwonetsetsa kuti kulumikizana kwankhondo kuli kolimba m'malo omwe akukangana.
3. Ukadaulo Woletsa Kutsekeka kwa Ma Antena
Ma antenna osinthika komanso anzeru amasintha mawonekedwe a kuwala kuti athetse ma jammer. Ma antenna osinthika amawongolera ma null ku magwero osokoneza, pomwe ma antenna anzeru amagwiritsa ntchito njira zambiri zosefera malo. Izi ndizofunikira kwambiri mu SATCOM yankhondo kuti ithane ndi ziwopsezo zankhondo zamagetsi.
4. Ukadaulo Wokonza Zinthu Pabwalo (OBP)
OBP imagwira ntchito yochotsa zizindikiro, kutanthauzira, ndi kutumiza mauthenga mwachindunji pa ma satellite, kuchepetsa kufooka kwa ma relay apansi. Ntchito zankhondo zimaphatikizapo kukonza zinthu m'deralo kuti zisawononge kumvetsera ndi kugawa bwino zinthu kuti zigwire bwino ntchito.
5. Kusintha kwa Domain
Njira monga FFT ndi ma wavelet zimasintha ma siginolo kukhala ma frequency kapena nthawi-frequency domains kuti zisefedwe. Izi zimalimbana ndi broadband ndi nthawi yosinthasintha, zomwe zimapangitsa kuti zikhale zosavuta kusintha m'malo ovuta amagetsi.
6. Kukonza Ma Domain a Amplitude
Zoletsa ndi Automatic Gain Control (AGC) zimaletsa kusokoneza kwamphamvu kosayembekezereka (monga mphezi kapena kugwedezeka kwa adani), kuteteza ma circuit olandila ndikusunga kukhazikika kwa ma link.
7. Ukadaulo Wogwirizana ndi Zosintha
Kusintha kwa nthawi yeniyeni pa ma code, kusintha kwa data, ndi kuchuluka kwa deta kutengera momwe njira zimakhalira (monga SNR, BER) kumatsimikizira kulumikizana kodalirika ngakhale nyengo itavuta. Machitidwe ankhondo amagwiritsa ntchito izi kuti athe kupirira pazochitika zankhondo zosinthasintha.
Mapeto
Ukadaulo wakunja wotsutsana ndi kutsekereza mauthenga umagwiritsa ntchito njira zosiyanasiyana monga kukonza zizindikiro, kulemba ma code, ndi machitidwe osinthika. Kugwiritsa ntchito kwa asilikali kumaika patsogolo kulimba ndi chitetezo, pomwe ntchito zamalonda zimayang'ana kwambiri pakuchita bwino. Kupita patsogolo kwamtsogolo kungaphatikizepo AI ndi kukonza nthawi yeniyeni kuti athetse ziwopsezo zomwe zikusintha.
Chengdu Concept Microwave Technology CO.,Ltd ndi kampani yopanga zinthu za 5G/6G RF zomwe zimagwiritsidwa ntchito polumikizirana ndi satellite ku China, kuphatikizapo RF lowpass fyuluta, highpass fyuluta, bandpass fyuluta, notch fyuluta/band stop fyuluta, duplexer, Power divider ndi directional coupler. Zonsezi zitha kusinthidwa malinga ndi zomwe mukufuna.
Takulandirani patsamba lathu:www.concept-mw.comkapena titumizireni uthenga pa:sales@concept-mw.com
Nthawi yotumizira: Julayi-29-2025