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</span>http://ynbltt.shop.88360.com</p><p><span>手機(jī): </span>0871-63578309</p><p><span>地址: </span>西山區(qū)環(huán)城西路368號(hào)華海新境界B坐22樓</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="lphzwdf" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="3byv3w3" class="box"><p><p> 聲吶結(jié)構(gòu)分類：主動(dòng)聲吶。主動(dòng)聲吶技術(shù)是指聲吶主動(dòng)發(fā)射聲波“照射”目標(biāo)，而后接收水中目標(biāo)反射的回波時(shí)間，以及回波參數(shù)以測(cè)定目標(biāo)的參數(shù)。有目的地主動(dòng)從系統(tǒng)中發(fā)射聲波的聲吶稱為主動(dòng)聲吶?？捎脕硖綔y(cè)水下目標(biāo)，并測(cè)定其距離、方位，貴州水下港口安防設(shè)備、航速、航向等運(yùn)動(dòng)要素。主動(dòng)聲吶發(fā)射某種形式的聲信號(hào)．利用信號(hào)在水下傳播途中障礙物或目標(biāo)反射的回波來進(jìn)行探測(cè)。由于目標(biāo)信息保存在回波之中，所以可根據(jù)接收到的回波信號(hào)來判斷目標(biāo)的存在，并測(cè)量或估計(jì)目標(biāo)的距離、方位、速度等參量。具體地說，可通過回波信號(hào)與發(fā)射信號(hào)問的時(shí)延推知目標(biāo)的距離，由回波波前法線方向可推知目標(biāo)的方向，貴州水下港口安防設(shè)備，貴州水下港口安防設(shè)備，而由回波信號(hào)與發(fā)射信號(hào)之間的頻移可推知目標(biāo)的徑向速度。此外由回波的幅度、相位及變化規(guī)律，可以識(shí)別出目標(biāo)的外形、大小、性質(zhì)和運(yùn)動(dòng)狀態(tài)。淺水多波束裝備生產(chǎn)公司。貴州水下港口安防設(shè)備</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="貴州水下港口安防設(shè)備,水下" src="https://tyunfile.71360.com/UploadFile/ynbltt/637478029222364726/4830351.png"></div><p> 由于電磁波在水中衰減的速率非常的高，無法做為偵測(cè)的訊號(hào)來源，因此以聲波探測(cè)水面下的人造物體成為運(yùn)用更好的手段。無論是潛艇或者是水面船只，都利用這項(xiàng)技術(shù)的衍生系統(tǒng)，探測(cè)水底下的物體，或者是以其作為導(dǎo)航的依據(jù)。作遠(yuǎn)距離傳輸?shù)哪芰啃问健Ｓ谑翘綔y(cè)水下目標(biāo)的技術(shù)——聲吶技術(shù)便應(yīng)運(yùn)而生。聲吶是各國(guó)海軍進(jìn)行水下監(jiān)視使用的主要技術(shù)，用于對(duì)水下目標(biāo)進(jìn)行探測(cè)、分類、定位和跟*；進(jìn)行水下通信和導(dǎo)航，保障艦艇和反潛飛機(jī)的戰(zhàn)術(shù)機(jī)動(dòng)和水中武器的使用。此外，聲吶技術(shù)還各方面用于魚雷制導(dǎo)、水雷引信，以及魚群探測(cè)、海洋石油勘探、船舶導(dǎo)航、水下作業(yè)、水文測(cè)量和海底地質(zhì)地貌的勘測(cè)等。和許多科學(xué)技術(shù)的發(fā)展一樣，社會(huì)的需要和科技的進(jìn)步促進(jìn)了聲吶技術(shù)的發(fā)展。俄羅斯海軍專門將一艘核子K-403號(hào)潛艇改成聲吶測(cè)試用艇，可見其重視程度。貴州水下港口安防裝備海底導(dǎo)航裝備生產(chǎn)公司。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="貴州水下港口安防設(shè)備,水下" src="https://tyunfile.71360.com/UploadFile/ynbltt/637478029006837375/6670506.png"></div><p> 現(xiàn)代水下導(dǎo)航技術(shù)發(fā)展趨勢(shì)：隨著現(xiàn)代軍*技術(shù)的不斷發(fā)展，水下導(dǎo)航必須適應(yīng)現(xiàn)代潛艇戰(zhàn)略和戰(zhàn)術(shù)的要求，能夠?yàn)闈撏?shí)施長(zhǎng)時(shí)間隱蔽航行提供實(shí)時(shí)準(zhǔn)確的導(dǎo)航信息。潛艇導(dǎo)航技術(shù)與其他導(dǎo)航技術(shù)相比具有更為明顯的軍*特征，因此它的發(fā)展在符合導(dǎo)航系統(tǒng)發(fā)展總方向的前提下將具有自己獨(dú)特的趨勢(shì)。根據(jù)潛艇軍*行動(dòng)的要求，GPS系統(tǒng)在未來戰(zhàn)*中可能誰都無法使用，應(yīng)注重研究和實(shí)施兩種以上導(dǎo)航體制并存的格局，為此未來水下潛艇導(dǎo)航技術(shù)將仍以慣性導(dǎo)航技術(shù)為基礎(chǔ)的導(dǎo)航技術(shù)，結(jié)臺(tái)無源重力、海底地形匹配、天文以及水聲等導(dǎo)航新技術(shù)實(shí)施潛艇綜合導(dǎo)航。 </p><p> 海洋環(huán)境噪聲噪聲源：冰下噪聲與冰原的移動(dòng)和振動(dòng)、冰塊的破裂、浮冰群的積成、吹過冰表面的渦旋氣流的不平穩(wěn)性及氣溫變化等因素有關(guān)。此外，冰山離開極地向較暖海面浮動(dòng)時(shí)，還產(chǎn)生冰山融化的噪聲。當(dāng)冰不連成一片，且成碎塊狀時(shí)，在同樣的海況下，冰下噪聲的功率譜級(jí)比無冰時(shí)高5～10分貝。生物噪聲海中能發(fā)聲的生物有甲殼類、魚類和海生哺乳類動(dòng)物（鯨、海豚）。它們發(fā)出的聲響是多種多樣的（見海洋生物發(fā)聲）。甲殼類中以螯蝦為主，它們用螯相互撞擊作響。魚類中能夠發(fā)聲的甚多，如北美的叫魚，發(fā)出叩擊般的間斷噪聲序列；中國(guó)黃海和東海的大黃魚和小黃魚，發(fā)出500～5000赫的咕咕聲；海豚在各種不同的生態(tài)發(fā)出不同的調(diào)頻嘯聲，在尋找目標(biāo)時(shí)發(fā)出短促的脈沖聲。遠(yuǎn)處航船動(dòng)力裝置傳來的水下噪聲其頻譜約為10赫至1千赫。極低頻噪聲由地震、海底火山爆發(fā)、微地震、大尺度湍流和遙遠(yuǎn)的風(fēng)暴所產(chǎn)生，頻率為1～10赫。要用水聽器準(zhǔn)確測(cè)定周圍的海洋自然噪聲，必須設(shè)法消除或盡量減輕所有干擾，如懸掛水聽器電纜搖擺振動(dòng)引起的噪聲，水流過水聽器表面產(chǎn)生的附加噪聲等。為此，多方面采用海底深水寬帶水聽器陣來測(cè)量自然噪聲場(chǎng)。水下目標(biāo)識(shí)別裝備生產(chǎn)公司。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="貴州水下港口安防設(shè)備,水下" src="https://tyunfile.71360.com/UploadFile/ynbltt/637478028392267105/1008777.png"></div><p> 水聲通信：水聲通信（Underwateracousticcommunication）是一項(xiàng)在水下收發(fā)信息的技術(shù)，是當(dāng)前海洋軍*中比較重要和關(guān)鍵的技術(shù)。常見的水聲通信方法是采用擴(kuò)頻通信技術(shù)，如CDMA等。水聲通信的工作原理是將文字、語音、圖像等信息，通過電發(fā)送機(jī)轉(zhuǎn)換成電信號(hào)，并由編碼器將信息數(shù)字化處理后，換能器又將電信號(hào)轉(zhuǎn)換為聲信號(hào)。水聲通信工作原理：水聲通訊示意圖工作原理是首先將文字、語音、圖像等信息，通過電發(fā)送機(jī)轉(zhuǎn)換成電信號(hào)，并由編碼器將信息數(shù)字化處理后，換能器又將電信號(hào)轉(zhuǎn)換為聲信號(hào)。聲信號(hào)通過水這一介質(zhì)，將信息傳遞到接收換能器，這時(shí)聲信號(hào)又轉(zhuǎn)換為電信號(hào)，解碼器將數(shù)字信息破譯后，電接收機(jī)才將信息變成聲音、文字及圖片。小目標(biāo)搜探裝備生產(chǎn)公司。四川水下聲學(xué)測(cè)速裝備</p><p style="text-indent:25px">反蛙聲吶裝備生產(chǎn)公司。貴州水下港口安防設(shè)備</p><p> 聲吶工作原理：聲波是觀察和測(cè)量的重要手段。有趣的是，英文“sound”一詞作為名詞是“聲聲吶模式”的意思，作為動(dòng)詞就有“探測(cè)”的意思，可見聲與探測(cè)關(guān)系之緊密。在水中進(jìn)行觀察和測(cè)量，具有得天獨(dú)厚條件的只有聲波。這是由于其他探測(cè)手段的作用距離都很短，光在水中的穿透能力很有限，即使在清澈的海水中，人們也只能看到十幾米到幾十米內(nèi)的物體；電磁波在水中也衰減太快，而且波長(zhǎng)越短，損失越大，即使用大功率的低頻電磁波，也只能傳播幾十米。然而，聲波在水中傳播的衰減就小得多，在深海聲道中爆*一個(gè)幾公斤的炸*，在兩萬公里外還可以收到信號(hào)，低頻的聲波還可以穿透海底幾千米的地層，并且得到地層中的信息。在水中進(jìn)行測(cè)量和觀察，迄今還未發(fā)現(xiàn)比聲波更有效的手段。貴州水下港口安防設(shè)備</p><p style="text-indent:25px">云南保利天同水下裝備科技有限公司致力于機(jī)械及行業(yè)設(shè)備，是一家貿(mào)易型的公司。公司業(yè)務(wù)涵蓋水聲通訊設(shè)備，水下導(dǎo)航定位設(shè)備，水聲圖像設(shè)備，水下港口安防設(shè)備等，價(jià)格合理，品質(zhì)有保證。公司注重以質(zhì)量為中心，以服務(wù)為理念，秉持誠(chéng)信為本的理念，打造機(jī)械及行業(yè)設(shè)備良好品牌。保利天同水下裝備憑借創(chuàng)新的產(chǎn)品、專業(yè)的服務(wù)、眾多的成功案例積累起來的聲譽(yù)和口碑，讓企業(yè)發(fā)展再上新高。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3128439.html</p></div></div></div></div></div><div id="8ipr53p" class="page-right twoColRt"><div id="nxurq2q" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div 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