White Paper pa UAV Interference Technology Yotengera VCO DDS ndi SDR Technology (2)

1. Chiyambi cha Electromagnetic Interference Technology

Cholinga cha zosokoneza zonse ndikuletsa mdani kugwiritsa ntchito bwino ma electromagnetic spectrum. Pankhondo zamagetsi, kusokoneza kwa ma elekitiroma kumadziwikanso kuti njira zamagetsi zamagetsi. Njira yoyambira yosokoneza ma elekitiroma ndikutumiza chizindikiro chosokoneza pamodzi ndi chizindikiro chomwe chikuyembekezeka kulandiridwa ndi mdani mu wolandila, zomwe zimapangitsa kuti zikhale zosatheka kuti wolandila mdani adziwe zolondola.

Chithunzi 9 Ulalo Wakulumikizana ndi Ulalo Wosokoneza

Njira zodziwika bwino za electromagnetic kusokoneza zimaphatikizapo kusokoneza,

Kusokoneza kwachinyengo, ndi kusokoneza mwanzeru.

Kusokoneza kwamagetsi kusokoneza

Kusokoneza kwamagetsi kwapang'onopang'ono kumatanthawuza kusokoneza komwe kumayambitsa kuchulukira, kuchulukira, kapena kuvutikira kupeza ma siginecha othandiza panjira yolandirira zida zolumikizirana ndi adani potumiza ma siginecha osokoneza. Kusokoneza kwamagetsi kwamagetsi kumatha kugawidwa m'magulu awa:

1.Kutsekereza kusokoneza: Kutsekereza kusokoneza, komwe kumadziwikanso kuti kutsekereza kusokoneza, kumakhala ndi ma radiation ambiri osokoneza ndipo nthawi zambiri kumatha kuphimba gulu lonse la ma frequency ogwiritsira ntchito masiteshoni am'deralo. Ubwino wake ndikuti sichifuna zida zongochitika mwangozi pafupipafupi kapena zida zowunikira kuti ziwongolere kusokoneza. Zipangizozi ndizosavuta ndipo zimatha kupondereza nthawi imodzi masiteshoni angapo olumikizirana mkati mwa frequency band. Koma kuipa kwake ndikuti mphamvu yosokoneza imabalalitsidwa ndipo mphamvuyo siili pamwamba; Kachiwiri, mukamagwiritsa ntchito kusokoneza kotsekereza, siginecha yomwe imagwera mkati mwa frequency band imasokonezedwanso.

2.Kusokoneza komwe kumayendera: Kusokoneza koyang'anira kumatanthawuza kuchuluka kwa maulendo okhudzana ndi zonyamulira za kusokoneza ndi kusinthasintha kwa chizindikiro, kapena chizindikiro chosokoneza ndi chizindikiro choyankhulirana chokhala ndi ma frequency spectrum wide.

3.Kusokoneza pafupipafupi: Kusokoneza pafupipafupi kumatanthawuza kusokoneza komwe kumapangidwa ndi kusinthasintha kosalekeza kwa ma frequency onyamulira a transmitter yosokoneza kuchokera kumunsi kupita kumtunda kapena kuchokera kumtunda kupita kumunsi mu bandi yayikulu pafupipafupi mwanjira inayake.

Dchisokonezo chambiri

Kusokoneza mwachinyengo kumatanthawuza mtundu wa kusokoneza komwe kumagwiritsa ntchito zida zofananira zolumikizirana kapena zida zojambulira kuti zitumize ma siginecha omwe amagwirizana ndi mawonekedwe ndi nthawi yolumikizirana, kunyenga maulalo olankhulirana kuti apange mayankho osayembekezereka, ndikukwaniritsa zolinga zowukira zomwe zimaletsa, kudzipatula, ndi kugwiritsa ntchito zida zamitundumitundu, kapena kupangitsa ogwiritsa ntchito kulumikizana kuti achite zinthu zolakwika kuti akwaniritse zolinga zanzeru.

Kusokoneza mwanzeru

Makina ojambulira anzeru amakhala ndi chidziwitso chanthawi yeniyeni, kuphunzira, kupanga zisankho, ndi kuthekera kwina pamakina olumikizirana omwe akutsata, ndipo amatha kusinthira kumadera osiyanasiyana amagetsi ndi kuyankha kuzinthu zosiyanasiyana. Kuyambira pa zolinga zanzeru, kudzera mu kuzindikira kwamitundu yambiri komanso kuphunzira za mphamvu ya mpweya wanthawi zonse, mawonekedwe a mafunde, maukonde, ndi machitidwe, zisankho zabwino kwambiri zimapangidwira ndikuchitidwa kuti zitheke kusokoneza kothandiza kwambiri, kotsika mtengo, komanso kwamphamvu.

3.UAV kusokoneza dera zomangamanga

 Mtengo wa VCO Sesani pafupipafupi jammer

Mtengo wa VCOKusesa pafupipafupi jammer ndi kamangidwe kosavuta ka jammer. Chithunzi chotsatirachi chikuwonetsa mfundo ya jammer ya njira. Choyamba, jenereta yozungulira katatu imapanga mafunde a katatu ndi mafupipafupi makumi angapo a KHz, omwe amayendetsa magetsi oyendetsa magetsi a VCO. Izi zimalola VCO kutulutsa siginecha ya RF pafupipafupi, yomwe imatha kufalitsidwa kudzera pa amplifier ndi antenna.

chithunzi10 VCOMfundo ya Kusesa Frequency Jammer

Chifukwa cha kusinthasintha kwa mawonekedwe a zida za VCO, kusintha pafupipafupi kumafunika panjira iliyonse ya jammer yamtundu wa VCO; Nthawi yomweyo, momwe kuchuluka kwa VCO kumasiyanasiyana ndi kutentha, bandwidth ina yoteteza iyenera kusungidwa kuti ipewe kuthamanga kwa VCO kuchokera pakusokoneza.

 DDS Sesani pafupipafupi jammer

Mfundo ya DDS kusesa pafupipafupi jammer ikuwonetsedwa pazithunzi zotsatirazi. DDS (molunjika digito synthesizer) mwachindunji amapanga kusesa pafupipafupi siginecha ndi bandiwifi zina (mwachitsanzo: 200 ~ 300MHz), ndiye kusakaniza ndi oscillator chizindikiro m'deralo, ndi kusefedwa ndi bandpass fyuluta kupeza RF chizindikiro chofunika (mwachitsanzo: 2400 ~ 2500MHz), amakwezedwa ndi kutulutsa ndi mlongoti.

Chithunzi 11 Mfundo ya DDS Sweep Frequency Jammer

Gwero lafupipafupi la DDS sweep frequency jammer limachokera ku DDS ndi oscillator wamba, ndipo kulondola kwafupipafupi kwa DDS ndi oscillator yakomweko kumachokera ku reference crystal oscillator. Chifukwa chake, kulondola kwafupipafupi kwa DDS sweep frequency jammer kumatha kukhala kokwezeka kwambiri (kutengera crystal oscillator). Poyerekeza ndi VCO sweep frequency jammer, DDS sweep frequency jammer sifunikira kuganizira zachitetezo chowonjezera ndipo imatha kutanthauzira molondola kuchuluka kwa ma frequency.

Dera la DDS kusesa pafupipafupi jammer ndi lovuta kwambiri kuposa la VCO kusesa pafupipafupi jammer, ndipo mtundu wa fyuluta ndi kukula zimasiyananso pamene ma frequency atuluka ndi osiyana, kotero kuti digiri ya normalization ya dera idzakhala yotsika pang'ono.

 SDR jammer luso

Mfundo ya jammer yotengera luso la SDR ikuwonetsedwa mu chithunzi chotsatira. FPGA imanyamula fayilo ya waveform yosungidwa mu Flash mu DDR, kenako imatumiza fayilo ya waveform ku mawonekedwe a digito baseband. Pambuyo podutsa pa IQ modulator, imakhala chizindikiro cha RF cha band frequency chandamale, yomwe imakulitsidwa ndi amplifier ndikutulutsa ku mlongoti. IQ modulator imagwirizanitsa gwero la oscillator lapafupi ndipo imatha kusintha mafupipafupi a oscillator wamba kudzera mu encoding ya SPI.

Chithunzi 12: Mfundo Yoyendetsera Chida Chosokoneza Kuchokera pa SDR Technology

Kutengera ukadaulo wa SDR, ma jammers amatha kutumiza chizindikiro chilichonse mkati mwa bandwidth inayake, monga ma siginecha amtundu umodzi wa sine, ma siginecha osavuta, kapena ma sign a OFDM. Mtundu wa chizindikiro umatanthauzidwa kwathunthu ndi mapulogalamu, kotero zizindikiro zosokoneza zenizeni zingagwiritsidwe ntchito pa zizindikiro zoyankhulirana zapadera kuti zikwaniritse zotsatira zosokoneza.

Izi timazitcha code yosokoneza chizindikiro. Kutengera ndi njira yolumikizira ulalo wolumikizirana, ma code osokoneza osiyanasiyana amatha kusankhidwa. Mwachitsanzo, ngati ulalo woyankhulirana umagwiritsa ntchito chonyamulira chimodzi cha QPSK chosinthira chizindikiro, titha kusankha nambala yolumikizirana ndi chonyamulira cha QPSK. Ngati ulalo woyankhulirana umagwiritsa ntchito ma sigino a OFDM, titha kusankha ma code osokoneza a OFDM okhala ndi malo omwewo.

1.Kuwunika kwa kusokoneza kwa ma drone

sesa pafupipafupi jammer

Ma jammers onse a VCO komanso DDS amachokera paukadaulo wosesa pafupipafupi. Mukamagwiritsa ntchito makina ojambulira pafupipafupi kuti asokoneze njira zoyankhulirana zam'mlengalenga zosayendetsedwa (potengera chitsanzo cha OFDM modulation multiplexing communication protocols), midadada yofananira ingasokonezedwe, ndikupangitsa kuti ulalo wolumikizanayo usokonezeke. Chifukwa chake, ma jammers akusesa pafupipafupi nthawi zambiri amafunikira mphamvu yayikulu yotumizira kuti isokoneze maulalo olumikizirana a mlengalenga osayendetsedwa.

Chithunzi 13 Kusokoneza kwa Sweep Frequency Jammer pa UAV Communication Link

 SDR Manyazi

Kutengera ukadaulo wa SDR, jammer imatha kuphimba gulu lonse la frequency ndikukwaniritsa kusokoneza kotsekereza; N'zothekanso kuphimba mwapadera gawo laling'ono la gulu lafupipafupi kuti mukwaniritse kusokoneza komwe kumakhudzidwa, kulola mphamvu kuti ikhale yowonjezereka komanso mtunda wosokoneza ukhale patali. Mosasamala kanthu za njira yosokoneza, ma subcarriers onse a chizindikiro chosokoneza cha OFDM akhoza kusokonezedwa, ndi chiwerengero cha zolakwika pafupi ndi 100%. Ngakhale ndi amphamvu zolakwa kukonza coding njira, n'kovuta kuti achire deta pa mkulu zolakwa mlingo. Chifukwa chake, ma jammers a SDR amatha kusokoneza maulalo a data ya drone.

Chithunzi 14 Kusokoneza kwa SDR mtundu wa Jammer pa UAV Communication Link

Ma jammers amtundu wa SDR amathanso kutulutsa zikwangwani mkati mwa bandwidth inayake, ndipo liwiro losesa lidzakhala lothamanga kuposa mtundu wa VCO ndi jammers zamtundu wa DDS. Pazinthu zowongolera zakutali monga ELRS yokhala ndi ma frequency hopping, gulu lonse la ma frequency amatha kuphimbidwa mokwanira kuti akwaniritse zolepheretsa.

Chidule

Mwachidule, poganizira zonse za mtengo ndi zotuluka, VCOAnti-Droneyankho likhalabe njira yayikulu yosokoneza ma drone kwa nthawi ina mtsogolo. Ngati kufalikira kwafupipafupi kumatheka pa gwero la VCO, kumatha kukwaniritsa zosowa zenizeni patsamba.