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href="http://www.cdcfah.com/cp/third-jxjxysb_qtxyzysb/">其他行業(yè)**設(shè)備</a>?四川水下港口安防設(shè)備值得信賴保利天同水下裝備供應(yīng)</p><div id="fk3qn4m" class="leftbox clearfix"><h1>四川水下港口安防設(shè)備值得信賴保利天同水下裝備供應(yīng)</h1><div id="lw2qs4i" class="proBig"><div id="rlamgkg" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/ynbltt/637478028550655810/7377117.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="g2vgqkg" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/ynbltt/637478028550655810/7377117.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="ixp78np" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>云南省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>四川水下港口安防設(shè)備,水下</p><p><span>***更新：</span>2021-02-03 08:23:16</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="vu32gsp" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">云南保利天同水下裝備科技有限公司</a></p><p><span>聯(lián)系人：</span>肖力夫</p><p><span>郵箱: </span>453901470@qq.com</p><p><span>電話: </span>18206796670</p><p><span>傳真: </span>0871_63578309</p><p><span>網(wǎng)址: </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="wlnhy9q" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="hgifhlx" class="box"><p><p> 聲吶結(jié)構(gòu)分類：被動聲吶。被動聲吶技術(shù)是指聲吶被動接收艦船等水中目標(biāo)產(chǎn)生的輻射噪聲和水聲設(shè)備發(fā)射的信號，四川水下港口安防設(shè)備，以測定目標(biāo)的方位和距離。它由簡單的水聽器演變而來，它收聽目標(biāo)發(fā)出的噪聲，判斷出目標(biāo)的位置和某些特性，特別適用于不能發(fā)聲暴露自己而又要探測敵艦活動的潛艇。利用接收換能器基陣接收目標(biāo)自身發(fā)出的噪聲或信號來探測目標(biāo)的聲吶稱為被動聲吶，四川水下港口安防設(shè)備。由于被動聲吶本身不發(fā)射信號，所以目標(biāo)將不會覺察聲吶的存在及其意圖。目標(biāo)發(fā)出的聲音及其特征，四川水下港口安防設(shè)備，在聲吶設(shè)計時并不為設(shè)計者所控制，對其了解也往往不多方面。 AUV導(dǎo)航裝備生產(chǎn)公司。四川水下港口安防設(shè)備</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="四川水下港口安防設(shè)備,水下" src="https://tyunfile.71360.com/UploadFile/ynbltt/637478028550655810/7377117.png"></div><p> 水聲通信發(fā)展情況：這是國際上高水平的技術(shù)，在遠(yuǎn)距離水里能清楚地接收到語音信號，世界上也只有極少數(shù)軍使用水聲通訊的蛟龍?zhí)柺聫?qiáng)國才能做到。水聲通信機(jī)使用的是模擬信號，可是海洋中的波浪、魚類、艦船等產(chǎn)生噪聲，使海洋中的聲場極為混亂，聲波在海水中傳遞時產(chǎn)生“多途徑干擾信號”這一較大的難題，導(dǎo)致接收到的信號模糊不清。半個世紀(jì)以來，水聲領(lǐng)域的**對這一難題一直束手無策，老式的模擬水聲通信機(jī)一直沿用至今。由于數(shù)字通信的產(chǎn)生，陸地上的信號干擾被成功解決，水聲領(lǐng)域的**也開始了在該領(lǐng)域進(jìn)行探索。他們認(rèn)真分析了世界上抗多途干擾的幾種方法，然后課題組一致認(rèn)為還是采用電磁波抗干擾的手段——跳頻通信，它既能抗多途徑干擾又能保證信息安全。因為海水成分很復(fù)雜，所以聲波傳遞時就被吸收了一部分，而且頻率越高吸收就越厲害，對于頻率低的聲波海水反而吸收少。**測得結(jié)果，聲波頻率在4000赫茲左右為遠(yuǎn)距離傳遞的較佳頻率，而用4000赫茲的頻率去實現(xiàn)跳頻通信，頻點與頻點之間的距離就很小了。四川水下探測設(shè)備水下攔截裝備生產(chǎn)公司。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="四川水下港口安防設(shè)備,水下" src="https://tyunfile.71360.com/UploadFile/ynbltt/637478028634991864/2755438.png"></div><p> 水聲通信水下通信非常困難，主要是由于通道的多徑效應(yīng)、時變效應(yīng)、可用頻寬窄、信號衰減嚴(yán)重，特別是在長距離傳輸中。水下通信相比有線通信來說速率非常低，因為水下通信采用的是聲波而非無線電波。常見的水聲通信方法是采用擴(kuò)頻通信技術(shù)，如CDMA等。補(bǔ)充：水聲通信技術(shù)發(fā)展的已經(jīng)較為成熟，國外很多機(jī)構(gòu)都已研制出水聲通信Modem，通信方式主要有：OFDM，擴(kuò)頻以及其它的一些調(diào)制方式。此外，水聲通信技術(shù)已發(fā)展到網(wǎng)絡(luò)化的階段，將無線電中的網(wǎng)絡(luò)技術(shù)（AdHoc）應(yīng)用到水聲通信網(wǎng)絡(luò)中，可以在海洋里實現(xiàn)多方位、立體化通信（可以與AUV、UUV等無人設(shè)備結(jié)合使用），但只有少數(shù)國家試驗成功。 </p><p style="text-indent:25px"> 從能量檢測的角度講，矢量水聽器的采用使系統(tǒng)的抗各向同性噪聲的能力獲得提高，并可實現(xiàn)遠(yuǎn)場多目標(biāo)的識別等。矢量水聽器的研究工作受到極大重視。因此，包括矢量信息在內(nèi)的多信息檢測是聲納系統(tǒng)的一個發(fā)展趨勢，正越來越被各個海軍大國所重視。隨著技術(shù)地不斷發(fā)展，技術(shù)需求越來越多，為滿足岸站建設(shè)的需要，服務(wù)海岸預(yù)警聲納系統(tǒng)，實現(xiàn)遠(yuǎn)程檢測、識別，低頻檢測能力日益顯得重要。另外，由于核動力潛艇的出現(xiàn)，潛艇隱身等新技術(shù)的普遍采用，反潛問題受到各國空前的重視。一種有效的方法是轉(zhuǎn)向測試螺旋槳低頻噪聲，安靜型潛艇和艦船的本征噪聲都在低頻段，這就需要低頻段的矢量水聽器。即要求探測換能器具有低頻檢測能力。低頻三維空間全向矢量檢測器己成為新的技術(shù)需求。這種低頻矢量水聽器的研制成功可以預(yù)期解決遠(yuǎn)程傳播低頻信號的檢測問題。同時，隨著目標(biāo)信號的減弱，高靈敏度檢測問題也變得迫切。微型慣導(dǎo)裝備生產(chǎn)公司。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="四川水下港口安防設(shè)備,水下" src="https://tyunfile.71360.com/UploadFile/ynbltt/637478028526271005/765235.png"></div><p> 水聲定位系統(tǒng)使用水下聲標(biāo)測定艦船或其他目標(biāo)相對位置的海上定位技術(shù)和方法。目前，在水下進(jìn)行定位和導(dǎo)航比較常見的方法就是聲學(xué)方法。聲學(xué)定位技術(shù)是利用水聲設(shè)備對已知目標(biāo)在一個特定的時間和空間中進(jìn)行定位的技術(shù)，即確定目標(biāo)(如船只)的方位和距離。自從1912年在美國出現(xiàn)了第1臺水聲測深儀以后，開始有了水聲助航設(shè)備。二戰(zhàn)中，對水下目標(biāo)的探測和測量受到了重視，并在戰(zhàn)后得到了迅速的發(fā)展。1958年，美國華盛頓大學(xué)應(yīng)用物理實驗室在達(dá)波灣建成了三維坐標(biāo)定位跟*水下武器靶場。這種水下定位定位跟*技術(shù)在六十年代后期得到廣泛應(yīng)用，成為魚雷靶場的主要測試方法。迄今為止，國內(nèi)外水下武器靶場使用的水下定位定位跟*系統(tǒng)有多種類型，按其安裝方式可分為固定式定位跟*系統(tǒng)、活動式(船載)定位跟*系統(tǒng)和輕便式定位跟*系統(tǒng)。水聲組網(wǎng)裝備生產(chǎn)公司。四川水下港口安防設(shè)備</p><p style="text-indent:25px">水下救援裝備生產(chǎn)公司。四川水下港口安防設(shè)備</p><p> 海底地震監(jiān)測觀測方法：海底地震儀投放、回收或觀測采用的方式主要有三種：①錨定浮標(biāo)式，用尼龍纜繩將地震儀與浮標(biāo)連接起來，便于尋找回收。用這一方式可進(jìn)行多點觀測,但纜繩容易帶來干擾。②自由下落自動升浮式,將海底地震儀同帶有分離裝置的錨連接好，投入海中后自由下落海底，預(yù)定的觀測時間一過，儀器內(nèi)的定時器或船上發(fā)出的信號指令使儀器與錨自動分離,升浮海面,打撈回收。此裝置結(jié)構(gòu)復(fù)雜而沉重。③海底電纜式，用海底電纜把海底地震儀和陸上觀測站連接起來進(jìn)行半永久的觀測，海底電纜起到數(shù)據(jù)傳輸、遙控、電力供給的作用。此法只能用于離岸較近的淺海地區(qū)。四川水下港口安防設(shè)備</p><p style="text-indent:25px">云南保利天同水下裝備科技有限公司辦公設(shè)施齊全，辦公環(huán)境優(yōu)越，為員工打造良好的辦公環(huán)境。專業(yè)的團(tuán)隊大多數(shù)員工都有多年工作經(jīng)驗，熟悉行業(yè)專業(yè)知識技能，致力于發(fā)展保利天同,保利水下,海底鷹,標(biāo)準(zhǔn)水聽器,水聲通訊,水下導(dǎo)航定位,水聲圖像,水下港口安防的品牌。公司不**提供專業(yè)的保利天同水下裝備科技有限公司：是以水下裝備為發(fā)展方向的國家高新技術(shù)企業(yè)，公司2002年成立以來，發(fā)揮雄厚的研發(fā)優(yōu)勢，研發(fā)了包括超高分辨率水下圖像聲吶、小尺寸高波特率水聲通信機(jī)、小型化高精度多譜勒計程議/ADCP及水下組合導(dǎo)航系統(tǒng)、港口智能安防系統(tǒng)等水下裝備。公司使命：帶給人們價值，世界因你而不同。公司愿景：用專注、持續(xù)改進(jìn)的優(yōu)良產(chǎn)品達(dá)成更好的客戶感受和口碑。，同時還建立了完善的售后服務(wù)體系，為客戶提供良好的產(chǎn)品和服務(wù)。誠實、守信是對企業(yè)的經(jīng)營要求，也是我們做人的基本準(zhǔn)則。公司致力于打造***的水聲通訊設(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。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3140774.html</p></div></div></div></div></div><div id="ve2nzi2" class="page-right twoColRt"><div id="zo3kmoa" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="jda3kmo" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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