機動工作艇 的英文怎麼說
中文拼音 [jīdònggōngzuòtǐng]
機動工作艇
英文
utility motor launch-
The submarine noise detected by sonar consists of two parts : propeller - generated hydro - dynamical noise, which can be greatly reduced by improving the submarine rear shape ; radiated noise from the submarine structure excited by the centrifugal forces ( moments ) of rotatory machine, which is more complicated and influenced by many factors
聲納所探測的潛艇噪聲包括兩部分，一是螺旋槳運轉帶來的水動力噪聲，二是潛艇主機工作時產生的不平衡力和力矩引起潛艇結構振動，帶動流場振動從而輻射噪聲。通過改進潛艇尾部線型設計，已將水動力噪聲降到比較低的程度，而結構噪聲則復雜得多，與許多因素有關。The major research works are divided into five sections, including warship bearings - only tracking maneuver research, warship bearings - only tracking research, multi - warships passive data association research, multi - warships passive location research and the engineering implementation of bearings - only passive location systems. the detailed research works are outlined as follows : ( 1 ) a method of evasion factor matrix is presented, which can add the possible patrol zone of targets ( enemy ' s warships ) according to intelligence, and the land and island information provided by electronic chart to the modified gain extended kalman filter, and modifies state equation. it can improve the location precision of the modified gain extended kalman filter
研究內容共分五個方面，分別是單艦純方位無源定位機動研究、單艦純方位無源定位跟蹤研究、多艦無源數據關聯研究、多艦純方位無源定位研究以及艦艇純方位無源定位系統的工程實現，主要完成了如下的工作： 1提出一種規避因子矩陣的方法，把根據情報獲得的目標（敵艦艇）可能活動區域，以及電子海圖提供的陸地島礁信息加入修正增益推廣卡爾曼濾波器中，對目標狀態方程進行修正處理，可提高修正增益推廣卡爾曼濾波定位演算法的定位精度。
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