瀹炴椂璇煶璁茶В璁懼鐨勯夋嫨鍙?qiáng)鍏惰皟鍒舵柟寮?/h1>
鍙戝竷鏃墮棿錛?019-01-22
璇煶閫氫俊鏄竴縐嶅疄鏃墮氫俊錛屼竴瀹氳淇濊瘉瀹炴椂鎬э紝涓嶇劧鐢ㄦ埛浣撻獙浼?xì)寰埦p熺硶銆傝瑙ｄ漢鍛樿涓鍙ワ紝鏀跺惉浜哄憳“鑰佸崐澶?rdquo;鎵嶅惉鍒拌闊沖唴瀹癸紝鏄劇劧浣撻獙鏄瀬鍏剁碂緋曪紝涓嶈垝鏈嶇殑銆傛墍浠ワ紝鎶涘紑璁茶В鍣ㄧ殑澶辯湡搴︼紝淇″櫔姣旓紝鍔ㄦ佽寖鍥達(dá)紝鍙戝皠鍔熻楃瓑鍙傛暟澶栵紝鐢ㄦ埛浣撻獙鑸掍笉鑸掗傛墠鏄渶閲嶈鐨勩傝秴榪?縐掍互涓婄殑寤惰繜灝辨湁鏄庢樉鎰熻銆傜壒鍒槸闀胯窛紱繪儏鍐典笅錛岃秴榪?00綾籌紝鏈潵鐨勪俊鍙瘋“鍑忥紝寤惰繜鏇翠弗閲嶃傛墍浠ワ紝閫夋嫨涓涓俊鍙峰己錛岃窛紱誨悎閫傜殑璁茶В鍣ㄦ槸鑷沖叧閲嶈鐨勩傛煇縐嶆柟闈㈣錛岃瑙ｅ櫒灝辨槸涓縐嶅疄鏃惰闊寵瑙ｇ數(shù)瀛愭櫤鑳借澶囥?/p>
灝忕紪宸茬粡寰堜箙娌＄粰澶у甯︽潵璁茶В鍣ㄧ殑鐩稿叧鐭ヨ瘑浠嬬粛浜嗭紝灝界澶у鏁頒漢鍙叧蹇冭瑙ｅ櫒濂戒笉濂界敤錛屼環(huán)閽辮吹涓嶈吹錛屽敭鍚庢湇鍔℃庝箞鏍鳳紝鑰屼笉鏄緢鍦ㄦ剰鍏惰儗鍚庣殑鐭ヨ瘑錛屽師鐞嗐備絾鐩鎬俊榪樻槸鏈夐儴鍒嗘兂浜嗚В鐭ラ亾鐨勶紝鎵浠ワ紝灝忕紪浠婂ぉ灝變負(fù)澶у鏁寸悊涓嬭瑙ｅ櫒鐨勮皟鍒舵柟寮忥紝緇濆鐨勫共璐э紝鑰屼笖闇瑕佷竴瀹氱殑涓撲笟鐭ヨ瘑錛屾敞鎰忚絎旇鍝︼細(xì)
甯傚満涓?0%鐨勮瑙ｅ櫒閮介噰鐢ㄧ殑鏄竴縐嶅箍娉涘湴搴旂敤鍦ㄧЩ鍔ㄩ氫俊銆佽埅絀轟笌鑸搗閫氫俊絳夎澶氶鍩熶腑鐨勫彨GFSK鐨勮皟鍒舵柟寮忚繘琛屼俊鍙瘋皟鍒躲傚湪璋冨埗涔嬪墠閫氳繃涓涓珮鏂綆閫氭護(hù)娉㈠櫒鏉ラ檺鍒朵俊鍙風(fēng)殑棰戣氨瀹藉害錛岃繖灝辨槸楂樻柉棰戠Щ閿帶GFSK錛圙auss frequency Shift Keying錛?/p>
瀹冨垎涓虹洿鎺ヨ皟鍒跺拰姝ｄ氦璋冨埗2縐嶆柟寮忥細(xì)
灝嗘暟瀛椾俊鍙風(fēng)粡榪囬珮鏂綆閫氭護(hù)娉㈠悗錛岀洿鎺ュ灝勯杞芥嘗榪涜妯℃嫙璋冮錛岃繖縐嶅彨鐩存帴璋冨埗銆傚綋璋冮鍣ㄧ殑璋冨埗鎸囨暟絳変簬0.5,瀹冨氨鏄啛鐭ョ殑GMSK(楂樻柉鏈灝忛縐婚敭鎺?璋冨埗錛屽洜姝MSK璋冨埗鍙湅鎴愭槸GFSK璋冨埗鐨勪竴涓壒渚嬨傝屽湪鏈夌殑鏂囩尞涓?縐板叿鏈変笉鍚孊T縐拰璋冨埗鎸囨暟鐨凣FSK璋冨埗鏂瑰紡涓篏MSK/FM,榪欏疄闄呬笂鏄敞鎰忓埌浜嗗綋璋冨埗鎸囨暟涓嶇瓑浜?.5鏃訛紝璇ユ柟寮忎笉鑳界О涓篏MSK榪欎竴浜嬪疄銆?/p>
鑰岀浜岀灝辨槸姝ｄ氦璋冨埗錛屽垯鏄竴縐嶉棿鎺ヨ皟鍒剁殑鏂規(guī)硶銆傝鏂規(guī)硶灝嗘暟瀛椾俊鍙瘋繘琛岄珮鏂綆閫氭護(hù)娉㈠茍浣滈傚綋鐨勭浉浣嶇Н鍒嗚繍綆楀悗,鍒嗘垚鍚岀浉鍜屾浜や袱閮ㄥ垎錛屽垎鍒杞芥嘗鐨勫悓鐩稿拰姝ｄ氦鍒嗛噺鐩鎬箻,鍐嶅悎鎴怗FSK淇″彿銆傜浉瀵硅岃█錛岃繖縐嶆柟娉曠墿鐞嗘蹇墊竻鏅?涔熼伩鍏嶄簡鐩存帴璋冨埗鏃朵俊鍙烽璋辯壒鎬х殑鎹熷銆傚彟涓鏂歸潰錛孏FSK鍙傛暟鎺у埗鍙互鍦ㄤ竴涓甫鏈夋爣瀹氬洜瀛愮殑楂樻柉婊ゆ嘗鍣ㄤ腑瀹炵幇,鑰屼笉鍙楀悗緇皟棰戠數(shù)璺殑褰卞搷錛屽洜鑰屽弬鏁扮殑鎺у埗瑕佺畝鍗曚竴浜涖傛鍥犱負(fù)濡傛,GFSK姝ｄ氦璋冨埗瑙ｈ皟鍣ㄧ殑鍩哄甫淇″彿澶勭悊鐗瑰埆閫傚悎浜庣敤鏁板瓧鏂規(guī)硶瀹炵幇銆傜闊寵揪璁茶В鍣ㄦ鏄繖縐嶆柟寮忋?/p>
銆愯皟鍒跺師鐞嗐?/h2>
GFSK楂樻柉棰戠Щ閿帶璋冨埗鏄妸杈撳叆鏁版嵁緇忛珮鏂綆閫氭護(hù)娉㈠櫒棰勮皟鍒舵護(hù)娉㈠悗錛屽啀榪涜FSK璋冨埗鐨勬暟瀛楄皟鍒舵柟寮忋傚畠鍦ㄤ繚鎸佹亽瀹氬箙搴︾殑鍚屾椂,鑳藉閫氳繃鏀瑰彉楂樻柉浣庨氭護(hù)娉㈠櫒鐨?dB甯﹀瀵瑰凡璋冧俊鍙風(fēng)殑棰戣氨榪涜鎺у埗錛屽叿鏈夋亽騫呭寘緇溿佸姛鐜囪氨闆嗕腑銆侀璋辮緝紿勭瓑鏃犵嚎閫氫俊緋葷粺鎵甯屾湜鐨勭壒鎬с?/p>