[жӢјйҹі]пјҡchangbo tongxin

[иӢұж–Ү]пјҡlong-wave communication

еҲ©з”Ёжіўй•·й•·ж–ј1е…¬йҮҢпјҲй »зҺҮдҪҺж–ј300еҚғиө«пјүзҡ„йӣ»зЈҒжіўеҜҰзҸҫзҡ„з„Ўз·ҡйӣ»йҖҡиЁҠгҖӮе®ғеҸҲеҸҜд»Ҙзҙ°еҲҶзӮәй•·жіўйҖҡиЁҠгҖҒз”ҡй•·жіўйҖҡиЁҠе’Ңи¶…й•·жіўйҖҡиЁҠгҖӮ

й•·жіўйҖҡиЁҠ

дәҰзЁұдҪҺй »йҖҡиЁҠгҖӮй•·жіў(LF)жҢҮжіўй•·зҜ„еңҚзӮә10пҪһ1е…¬йҮҢпјҲй »зҺҮзӮә30пҪһ300еҚғиө«пјүзҡ„йӣ»зЈҒжіўгҖӮй•·жіўжҳҜз”ЁеӨ©жіўжҲ–ең°жіўеҪўејҸеӮіж’ӯзҡ„пјҢдё»иҰҒз”Ёең°жіўеӮіж’ӯпјҢеӮіж’ӯжҜ”ијғз©©е®ҡгҖӮеңЁз”Ёең°жіўеӮіж’ӯжҷӮе…¶жҗҚиҖ—дё»иҰҒиҲҮең°зҡ„йӣ»е°ҺзҺҮжңүй—ңпјҢеңЁжө·йқўдёҠй•·жіўзҡ„ең°жіўеӮіж’ӯжҗҚиҖ—ијғе°ҸпјҢдҫқдёҚеҗҢзҡ„иј»е°„еҠҹзҺҮе’Ңжіўй•·еӮіж’ӯзҡ„и·қйӣўйҒ”ж•ёзҷҫиҮіж•ёеҚғе…¬йҮҢгҖӮеңЁй »зҺҮй«ҳйҡҺ(150еҚғиө«д»ҘдёҠ)пјҢеӨ§ж°ЈеҷӘиҒІијғе°ҸпјҢиҖҢеӨ©з·ҡж•ҲзҺҮијғй«ҳпјҢиҮід»Ҡд»Қиў«з”Ёж–јжө·дёҠйҖҡиЁҠпјҢд№ҹйҒ©з”Ёж–јең°дёӢйҖҡиЁҠгҖӮеңЁй »зҺҮдҪҺз«ҜпјҲ30пҪһ60еҚғиө«пјүпјҢе®ғиғҪз©ҝйҖҸдёҖе®ҡж·ұеәҰзҡ„жө·ж°ҙпјҢжүҖд»Ҙд№ҹз”Ёж–јж°ҙдёӢйҖҡиЁҠпјҢжӯӨеӨ–пјҢйӮ„з”Ёд»ҘеӮіж’ӯй »зҺҮжЁҷжә–гҖӮ

з”ҡй•·жіўйҖҡиЁҠ

дәҰзЁұз”ҡдҪҺй »йҖҡиЁҠгҖӮз”ҡй•·жіў (VLF)жҢҮжіўй•·зҜ„еңҚзӮә100пҪһ10е…¬йҮҢ(й »зҺҮзӮә3пҪһ30еҚғиө«)зҡ„йӣ»зЈҒжіўпјҢдҪҶйҖҡеёёдҪҝз”Ёзҡ„жҳҜ10пҪһ30еҚғиө«й »ж®өгҖӮе®ғдё»иҰҒйқ еӨ§ең°иҲҮдҪҺйӣ»йӣўеұӨй–“еҪўжҲҗзҡ„жіўе°ҺйҖІиЎҢеӮіж’ӯ(иҰӢең°-йӣ»йӣўеұӨжіўе°Һйӣ»жіўеӮіж’ӯ)гҖӮжіўй•·и¶Ҡй•·еүҮиЎ°жёӣи¶Ҡе°ҸпјҢз©ҝйҖҸжө·ж°ҙжҲ–еңҹеЈӨзҡ„иғҪеҠӣд№ҹи¶Ҡеј·пјҢдҪҶеҗҢжҷӮеӨ§ж°ЈеҷӘиҒІд№ҹи¶ҠеӨ§гҖӮз”ұж–јжіўй•·йҒ еӨ§ж–јеӨ©з·ҡе№ҫдҪ•е°әеҜёпјҢеӨ©з·ҡиј»е°„йӣ»йҳ»еҫҲе°ҸпјҢе®№жҠ—еҫҲеӨ§гҖӮзӮәдәҶеҢ№й…ҚпјҢеӨ©з·ҡдёҖиҲ¬йғҪеҠ еҫҲеӨ§зҡ„й ӮиІ ијүд»Ҙжёӣе°Ҹе®№жҠ—пјҢиҮҙдҪҝеӨ©з·ҡйҫҗеӨ§гҖӮзӮәдәҶиӘҝ諧пјҢиҝҙи·ҜдёӯйӮ„иҰҒдёІиҒҜйӣ»ж„ҹпјҢйӣ»е®№гҖҒйӣ»ж„ҹе’Ңйӣ»йҳ»еҪўжҲҗй«ҳQ еҖји«§жҢҜиҝҙи·ҜгҖӮеӣ жӯӨпјҢз”ҡй•·жіўйҖҡиЁҠзҡ„зү№й»һжҳҜзі»зөұйҫҗеӨ§гҖҒQ еҖјй«ҳгҖҒиҝҙи·Ҝйӣ»еЈ“еҫҲй«ҳгҖҒйҖҡеё¶ијғзӘ„пјҲдҪҺз«ҜеҫҖеҫҖеҸӘжңүе№ҫеҚҒиө«пјүгҖҒйҖҡиЁҠйҖҹзҺҮдҪҺпјҢзҷје°„ж©ҹеҠҹзҺҮдёҖиҲ¬еҫһеҚҒе№ҫеҚғз“ҰеҲ°ж•ёе…Ҷз“ҰгҖӮз”ҡй•·жіўеӮіж’ӯз©©е®ҡпјҢеҸ—еӨӘйҷҪе°„йӣ»зҲҶзҷјжҲ–ж ёзҲҶзӮёзӯүеј•иө·зҡ„йӣ»йӣўеұӨйЁ·ж“ҫзҡ„еҪұйҹҝијғе°ҸпјҢйҒ©з”Ёж–јйҒ и·қйӣўж°ҙдёӢйҖҡиЁҠгҖҒйҳІйӣ»йӣўеұӨйЁ·ж“ҫзҡ„еӮҷз”ЁйҖҡиЁҠе’Ңең°дёӢйҖҡиЁҠзӯүгҖӮ

и¶…й•·жіўйҖҡиЁҠ

дәҰзЁұи¶…дҪҺй »йҖҡиЁҠгҖӮи¶…й•·жіў(SLF)жҢҮжіўй•·зҜ„еңҚзӮә10000пҪһ1000е…¬йҮҢпјҲй »зҺҮзӮә30пҪһ300иө«пјүзҡ„йӣ»зЈҒжіўпјҢеӮіж’ӯеҚҒеҲҶз©©е®ҡпјҢеңЁжө·ж°ҙдёӯзҡ„еӮіж’ӯиЎ°жёӣзҙ„зӮәз”ҡй•·жіўзҡ„еҚҒеҲҶд№ӢдёҖпјҲй »зҺҮзӮә75иө«жҷӮпјҢиЎ°жёӣзҙ„зӮә0.3еҲҶиІқпјҸзұіпјүпјҢеӣ иҖҢе°Қжө·ж°ҙз©ҝйҖҸиғҪеҠӣеҫҲеј·пјҢеҸҜж·ұйҒ”100зұіжҲ–жӣҙеӨҡпјҢдё»иҰҒз”Ёж–јжө·еІёе°Қж·ұжҪӣжҪӣиүҮпјҲеҰӮжҲ°з•Ҙе°ҺеҪҲжҪӣиүҮпјүзҡ„йҒ и·қйӣўжҢҮжҸ®йҖҡиЁҠгҖӮз”ұж–ји¶…й•·жіўйҖҡиЁҠзҡ„е·ҘдҪңй »зҺҮжҘөдҪҺпјҢжіўй•·й•·йҒ”ж•ёе…ҶзұіпјҢеӨ©з·ҡдё»иҰҒжҺЎз”Ёй•·йҒ”ж•ёиҗ¬зұізҡ„е…©з«ҜжҺҘең°зҡ„еҹӢең°е°Һз·ҡпјҢйҒёз”Ёйӣ»е°ҺзҺҮжҘөдҪҺзҡ„ең°еҚҖдҪңзӮәзҷје°„е ҙең°пјҢе…¶йӣҶиҶҡж·ұеәҰеҫҲж·ұпјҢеҪўжҲҗзӯүж•Ҳз’°еҪўеӨ©з·ҡгҖӮе„ҳз®ЎеҰӮжӯӨпјҢеӨ©з·ҡж•ҲзҺҮд»Қ然еҫҲдҪҺпјҢзҷје°„ж©ҹеҠҹзҺҮеңЁж•ёе…Ҷз“Ұжғ…жіҒдёӢиј»е°„еҠҹзҺҮд№ҹеҸӘжңүе№ҫз“ҰгҖӮжҺЎз”ЁжңҖе°Ҹ移頻йҚөжҺ§ (MSK)пјҲиҰӢж•ёеӯ—иӘҝиЈҪпјүе’ҢеҚ·з©Қз·ЁзўјпјҲиҰӢеҚ·з©ҚзўјпјүжҠҖиЎ“пјҢз”ЁиЁҲз®—ж©ҹйҖІиЎҢиЁҠиҷҹиҷ•зҗҶпјҢеҸҜд»ҘеңЁдҪҺдҝЎеҷӘжҜ”дёӢжҺҘ收гҖӮдҪҶеӨ§ж°ЈеҷӘиҒІеҫҲй«ҳпјҢиЁҠиҷҹеҫҲејұпјҢйҖҡиЁҠйҖҹзҺҮзү№еҲҘдҪҺпјҢдёҖеҖӢзўје…ғиҰҒй•·йҒ”ж•ёз§’еҲ°ж•ёеҚҒз§’гҖӮ

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