銆�銆�鍏夊姛鐜囩殑鍠綅鏄痙bm,鍦ㄥ厜绾栨敹鐧�(f膩)鍣ㄦ垨浜ゆ彌姗�(j墨)鐨勮(shu艒)鏄庢浉(sh奴)涓湁瀹冪殑鐧�(f膩)鍏夊拰鎺ユ敹鍏夊姛鐜�,閫氬父鐧�(f膩)鍏夊皬浜�0dbm,鎺ユ敹绔兘澶犳帴鏀剁殑鏈�灏忓厜鍔熺巼绋辩偤闈堟晱搴�,鑳芥帴鏀剁殑鍏夊姛鐜囨笡鍘婚潏鏁忓害鐨勫�肩殑鍠綅鏄痙b(dbm-dbm=db),绋辩偤鍕�(d貌ng)鎱�(t脿i)鑼冨湇,鐧�(f膩)鍏夊姛鐜囨笡鍘绘帴鏀堕潏鏁忓害鏄厑瑷辩殑鍏夌簴琛拌�楀��.娓�(c猫)瑭︽檪(sh铆)瀵�(sh铆)闅涚殑鐧�(f膩)鍏夊姛鐜囨笡鍘诲(sh铆)闅涙帴鏀跺埌鐨勫厜鍔熺巼鐨勫�煎氨鏄厜绾栬“鑰�(db).鎺ユ敹绔帴鏀跺埌鐨勫厜鍔熺巼鍊兼槸 鑳芥帴鏀剁殑鍏夊姛鐜�-(鍕�(d貌ng)鎱�(t脿i)鑼冨湇/2),浣嗕竴鑸笉鏈�(hu矛)閫欐ǎ濂�.鐢变簬姣忕ó鍏夋敹鐧�(f膩)鍣ㄥ拰鍏夋ā濉婄殑鍕�(d貌ng)鎱�(t脿i)鑼冨湇涓嶄竴妯�,鎵�浠ュ厜绾栧叿楂旇兘澶犲厑瑷辫“鑰楀灏戣鐪嬪(sh铆)闅涙儏褰�锛屼竴鑸締(l谩i)瑾�(shu艒)鍏佽ū鐨勮“鑰楃偤15-30db宸﹀彸銆�
銆�銆�鏈夌殑瑾�(shu艒)鏄庢浉(sh奴)鏈�(hu矛)鍙湁鐧�(f膩)鍏夊姛鐜囧拰鍌宠几璺濋洟鍏╁��(g猫)鍙冩暩(sh霉),鏈夋檪(sh铆)鏈�(hu矛)瑾�(shu艒)鏄庝互姣忓叕閲屽厜绾栬“鑰楀灏戠畻鍑虹殑鍌宠几璺濋洟,澶у鏄�0.5db/km.鐢ㄦ渶灏忓偝杓歌窛闆㈤櫎浠�0.5,灏辨槸鑳芥帴鏀剁殑鍏夊姛鐜�,濡傛灉鎺ユ敹鐨勫厜鍔熺巼楂樹簬閫欏��(g猫)鍊�,鍏夋敹鐧�(f膩)鍣ㄥ彲鑳芥渻(hu矛)琚噿澹�.鐢ㄥ偝杓歌窛闆㈤櫎浠�0.5,灏辨槸闈堟晱搴�,濡傛灉鎺ユ敹鐨勫厜鍔熺巼浣庝簬閫欏��(g猫)鍊�,閺堣矾鍙兘鏈�(hu矛)涓嶉�氥��
銆�銆�鍏夌簴鐨勯�ｆ帴鏈夊叐绋柟寮�,涓�绋槸鍥哄畾閫ｆ帴涓�绋槸娲诲嫊(d貌ng)閫ｆ帴,鍥哄畾閫ｆ帴灏辨槸鐔旀帴,鏄敤灏堢敤瑷�(sh猫)鍌欓�氶亷(gu貌)鏀鹃浕,灏囧厜绾栫啍鍖栦娇鍏╂鍏夌簴閫ｆ帴鍦ㄤ竴璧�,鍎�(y艒u)榛�(di菐n)鏄“鑰楀皬,缂洪粸(di菐n)鏄搷浣滃京(f霉)闆滈潏娲绘�у樊.娲诲嫊(d貌ng)閫ｆ帴鏄�氶亷(gu貌)閫ｆ帴鍣�,閫氬父鍦∣DF涓婇�ｆ帴灏剧簴,鍎�(y艒u)榛�(di菐n)鏄�*浣滅啊(ji菐n)鍠潏娲绘�уソ缂洪粸(di菐n)鏄“鑰楀ぇ,涓�鑸(shu艒)渚�(l谩i)涓�鍊�(g猫)娲诲嫊(d貌ng)閫ｆ帴鐨勮“鑰楃浉鐣�(d膩ng)浜庝竴鍏噷鍏夌簴.鍏夌簴鐨勮“鑰楀彲浠ラ�欐ǎ浼扮畻:鍖呮嫭鍥哄畾鍜屾椿鍕�(d貌ng)閫ｆ帴,姣忓叕閲屽厜绾栬“鑰�0.5db,濡傛灉娲诲嫊(d貌ng)閫ｆ帴鐩哥暥(d膩ng)灏�,閫欏��(g猫)鍊煎彲浠ョ偤0.4db,鍠磾鍏夌簴涓嶅寘鎷椿鍕�(d貌ng)閫ｆ帴,鍙互娓涘皯鑷�0.3db,鐞嗚珫鍊肩磾鍏夌簴鐐�0.2db/km;鐐轰繚闅�(xi菐n)瑷�(j矛)澶у鏁�(sh霉)鎯呮硜涓嬩互0.5鐐哄ソ銆�
銆�銆�鍏夌簴娓�(c猫)瑭X鑸嘡X蹇呴爤鍒嗗垾娓�(c猫)瑭�,鍦ㄥ柈绾栨儏娉佷笅鐢变簬鍍呬娇鐢ㄤ竴绾栨墍浠ョ暥(d膩ng)鐒跺彧闇�娓�(c猫)瑭︿竴娆�.鍠簴鐨勫(sh铆)鐝�(xi脿n)鍘熺悊?y猫)?j霉)鐢熺敘(ch菐n)鍏徃璎涙槸娉㈠垎寰�(f霉)鐢�,浣嗘湰浜鸿獚(r猫n)鐐轰娇鐢ㄥ厜绾栬�﹀悎鍣ㄧ殑鍙兘鎬ф洿楂�銆�
銆�銆�浠�涔堟槸鍏夊姛鐜囪▓(j矛)鐢ㄤ簬娓�(c猫)閲忓厜鍔熺巼鎴栭�氶亷(gu貌)涓�娈靛厜绾栫殑鍏夊姛鐜囩浉灏�(du矛)鎼嶈�椼�傚湪鍏夌簴绯荤当(t菕ng)涓�锛岄潪甯稿儚闆诲瓙瀛�(xu茅)涓殑钀�(w脿n)鐢ㄨ〃銆傚湪鍏夌簴娓�(c猫)閲忎腑锛屽厜鍔熺巼瑷�(j矛)鏄噸璨�(f霉)鑽峰父鐢ㄨ〃銆傞�氶亷(gu貌)娓�(c猫)閲忕櫦(f膩)灏勭姗�(j墨)鎴栧厜缍�(w菐ng)绲�(lu貌)鐨勫姛鐜�锛屼竴鑷�(t谩i)鍏夊姛鐜囪▓(j矛)灏辫兘澶犺⿻(p铆ng)鍍�(ji脿)鍏夌瑷�(sh猫)鍌欑殑鎬ц兘銆傜敤鍏夊姛鐜囪▓(j矛)鑸囩┅(w臎n)瀹氬厜婧愮祫鍚堜娇鐢�锛屽墖鑳藉娓�(c猫)閲忛�ｆ帴鎼嶈��銆佹椹�(y脿n)閫ｇ簩(x霉)鎬�锛屽苟骞姪瑭�(p铆ng)浼板厜绾栭張璺偝杓歌唱(zh矛)閲忋��
銆�銆�閲濆皪(du矛)鐢ㄦ埗鐨勫叿楂旀噳(y墨ng)鐢�锛岃閬告搰閬╁悎鐨勫厜鍔熺巼瑷�(j矛)锛屾噳(y墨ng)瑭查棞(gu膩n)娉ㄤ互涓嬪悇榛�(di菐n)锛�
銆�?銆傝杽鈶鎿囩殑鎺㈤牠椤炲瀷鍜屾帴鍙ｉ鍨�銆�
銆�銆�锛�銆佽⿻(p铆ng)鍍�(ji脿)鏍℃簴(zh菙n)绮惧害鍜屽埗閫犳牎婧�(zh菙n)绋嬪簭锛岃垏浣犵殑鍏夌簴鍜屾帴闋姹傝寖鍦嶇浉鍖归厤銆�
銆�?銆�?銆佺⒑瀹氶�欎簺鍨嬭櫉(h脿o)鑸囦綘鐨勬脯(c猫)閲忚寖鍦嶅拰椤ず鍒嗚鲸鐜囩浉涓�鑷�銆�
銆�?銆�?銆佸叿鍌欑洿鎺ユ彃鍏ユ悕鑰楁脯(c猫)閲忕殑 dB鍔熻兘銆�
銆�銆�鍏夊姛鐜囩殑鍠綅鏄痙bm,鍦ㄥ厜绾栨敹鐧�(f膩)鍣ㄦ垨浜ゆ彌姗�(j墨)鐨勮(shu艒)鏄庢浉(sh奴)涓湁瀹冪殑鐧�(f膩)鍏夊拰鎺ユ敹鍏夊姛鐜�,閫氬父鐧�(f膩)鍏夊皬浜�0dbm,鎺ユ敹绔兘澶犳帴鏀剁殑鏈�灏忓厜鍔熺巼绋辩偤闈堟晱搴�,鑳芥帴鏀剁殑鍏夊姛鐜囨笡鍘婚潏鏁忓害鐨勫�肩殑鍠綅鏄痙b(dbm-dbm=db),绋辩偤鍕�(d貌ng)鎱�(t脿i)鑼冨湇,鐧�(f膩)鍏夊姛鐜囨笡鍘绘帴鏀堕潏鏁忓害鏄厑瑷辩殑鍏夌簴琛拌�楀��.娓�(c猫)瑭︽檪(sh铆)瀵�(sh铆)闅涚殑鐧�(f膩)鍏夊姛鐜囨笡鍘诲(sh铆)闅涙帴鏀跺埌鐨勫厜鍔熺巼鐨勫�煎氨鏄厜绾栬“鑰�(db).鎺ユ敹绔帴鏀跺埌鐨勫厜鍔熺巼鍊兼槸 鑳芥帴鏀剁殑鍏夊姛鐜�-(鍕�(d貌ng)鎱�(t脿i)鑼冨湇/2),浣嗕竴鑸笉鏈�(hu矛)閫欐ǎ濂�.鐢变簬姣忕ó鍏夋敹鐧�(f膩)鍣ㄥ拰鍏夋ā濉婄殑鍕�(d貌ng)鎱�(t脿i)鑼冨湇涓嶄竴妯�,鎵�浠ュ厜绾栧叿楂旇兘澶犲厑瑷辫“鑰楀灏戣鐪嬪(sh铆)闅涙儏褰�.涓�鑸締(l谩i)瑾�(shu艒)鍏佽ū鐨勮“鑰楃偤15-30db宸﹀彸銆�
銆�銆�鏈夌殑瑾�(shu艒)鏄庢浉(sh奴)鏈�(hu矛)鍙湁鐧�(f膩)鍏夊姛鐜囧拰鍌宠几璺濋洟鍏╁��(g猫)鍙冩暩(sh霉),鏈夋檪(sh铆)鏈�(hu矛)瑾�(shu艒)鏄庝互姣忓叕閲屽厜绾栬“鑰楀灏戠畻鍑虹殑鍌宠几璺濋洟,澶у鏄�0.5db/km.鐢ㄦ渶灏忓偝杓歌窛闆㈤櫎浠�0.5,灏辨槸鑳芥帴鏀剁殑鍏夊姛鐜�,濡傛灉鎺ユ敹鐨勫厜鍔熺巼楂樹簬閫欏��(g猫)鍊�,鍏夋敹鐧�(f膩)鍣ㄥ彲鑳芥渻(hu矛)琚噿澹�.鐢ㄥ偝杓歌窛闆㈤櫎浠�0.5,灏辨槸闈堟晱搴�,濡傛灉鎺ユ敹鐨勫厜鍔熺巼浣庝簬閫欏��(g猫)鍊�,閺堣矾鍙兘鏈�(hu矛)涓嶉��銆�
銆�銆�鍏夌簴鐨勯�ｆ帴鏈夊叐绋柟寮�,涓�绋槸鍥哄畾閫ｆ帴涓�绋槸娲诲嫊(d貌ng)閫ｆ帴,鍥哄畾閫ｆ帴灏辨槸鐔旀帴,鏄敤灏堢敤瑷�(sh猫)鍌欓�氶亷(gu貌)鏀鹃浕,灏囧厜绾栫啍鍖栦娇鍏╂鍏夌簴閫ｆ帴鍦ㄤ竴璧�,鍎�(y艒u)榛�(di菐n)鏄“鑰楀皬,缂洪粸(di菐n)鏄�*浣滃京(f霉)闆滈潏娲绘�у樊.娲诲嫊(d貌ng)閫ｆ帴鏄�氶亷(gu貌)閫ｆ帴鍣�,閫氬父鍦∣DF涓婇�ｆ帴灏剧簴,鍎�(y艒u)榛�(di菐n)鏄�*浣滅啊(ji菐n)鍠潏娲绘�уソ缂洪粸(di菐n)鏄“鑰楀ぇ,涓�鑸(shu艒)渚�(l谩i)涓�鍊�(g猫)娲诲嫊(d貌ng)閫ｆ帴鐨勮“鑰楃浉鐣�(d膩ng)浜庝竴鍏噷鍏夌簴.鍏夌簴鐨勮“鑰楀彲浠ラ�欐ǎ浼扮畻:鍖呮嫭鍥哄畾鍜屾椿鍕�(d貌ng)閫ｆ帴,姣忓叕閲屽厜绾栬“鑰�0.5db,濡傛灉娲诲嫊(d貌ng)閫ｆ帴鐩哥暥(d膩ng)灏�,閫欏��(g猫)鍊煎彲浠ョ偤0.4db,鍠磾鍏夌簴涓嶅寘鎷椿鍕�(d貌ng)閫ｆ帴,鍙互娓涘皯鑷�0.3db,鐞嗚珫鍊肩磾鍏夌簴鐐�0.2db/km;鐐轰繚闅�(xi菐n)瑷�(j矛)澶у鏁�(sh霉)鎯呮硜涓嬩互0.5鐐哄ソ銆�
銆�銆�鍏夌簴娓�(c猫)瑭X鑸嘡X蹇呴爤鍒嗗垾娓�(c猫)瑭�,鍦ㄥ柈绾栨儏娉佷笅鐢变簬鍍呬娇鐢ㄤ竴绾栨墍浠ョ暥(d膩ng)鐒跺彧闇�娓�(c猫)瑭︿竴娆�銆傚柈绾栫殑瀵�(sh铆)鐝�(xi脿n)鍘熺悊?y猫)?j霉)鐢熺敘(ch菐n)鍏徃璎涙槸娉㈠垎寰�(f霉)鐢�,浣嗘湰浜鸿獚(r猫n)鐐轰娇鐢ㄥ厜绾栬�﹀悎鍣ㄧ殑鍙兘鎬ф洿楂�銆�
