導程累積誤差 的英文怎麼說

中文拼音 [dǎochénglěichā]
導程累積誤差 英文
cumulative error in lead
  • : 動詞1. (引導) lead; guide 2. (傳導) transmit; conduct 3. (開導) instruct; teach; give guidance to
  • : 名詞1 (規章; 法式) rule; regulation 2 (進度; 程序) order; procedure 3 (路途; 一段路) journe...
  • : 累Ⅰ形容詞(疲勞) tired; fatigued; weary Ⅱ動詞1. (使疲勞; 使勞累) tire out; wear out 2. (操勞) work hard; toil
  • : Ⅰ動詞(積累) amass; store up; accumulate Ⅱ形容詞(長時間積累下來的) long standing; long pending...
  • : Ⅰ名詞(錯誤) mistake; error Ⅱ動詞1 (弄錯) mistake; misunderstand 2 (耽誤) miss 3 (使受損害...
  • : 差Ⅰ名詞1 (不相同; 不相合) difference; dissimilarity 2 (差錯) mistake 3 [數學] (差數) differ...
  • 累積 : accumulate累積服刑 [法] accumulative sentence; 累積股本 cumulative capital stock; 累積股息 cumula...
  • 誤差 : error
  1. In this paper, the main research works are as follows : 1 ) survey and analysis previous work in auv navigation and summarize : as the cumulate error, the dead - reckoning and inertial navigation systems ca n ' t be used without other modified system ; the acoustic navigation system is used only in small range, and is very expensive. 2 ) two important approaches in geophysical navigation techniques are summarized, one is terrain contour based navigation, this approach is investigated keystone today ; the other is image based navigation, due to no perfect image sensors and image seabed map, this approach has seldom been practised. 3 ) two important terrain contour based navigation algorithms has been applied to auv, one is match algorithm - based terrain contour match ( tercom ) ; the other is kalman filter - based sandia inertia terrain - aided navigation ( sitan )

    主要研究內容包括:一、總結分析了當前水下航的常用方法和不足之處,指出基於航位推算的航方法,存在著最大的問題就是問題,如果沒有修正系統,這種方法很難滿足使用要求;其次指出基於聲學的航方法,造價昂貴,航范圍有限,難以滿足自主水下航行器大范圍航的需求;二、總結了當前水下地形輔助航的主要技術路線,一是基於地形高的匹配方法,這是當前研究的重點;二是基於地形圖像的匹配方法,由於缺乏良好的圖像傳感器,和可用的海底圖像地圖,目前這種方法還有待研究發展;三、將兩種地形高匹配的常用方法應用到自主水下航行器上:以相關演算法為前提的地形輪廓匹配( tercom )方法和以卡爾曼濾波為基礎的桑迪亞慣性地形輔助航( sitan )方法,前者演算法簡單可靠,但是航精度不高,後者雖然精度比較高,但存在著演算法較為復雜、有可能發散和出現奇異值等問題。
  2. Because the ins error equation is unstable, some initial states error will cause error floating and error accumulating, if the filter observations were only position error, kalman filter will converge very slowly, and some states error ( such as yaw error ) will be great. since the milemeter altimeter and piloting could only output position information, this paper put forward a method, firstly estimateing states and then kalman filtering, to improve filtering effect. simulation proved that this method could effectively reduce the system states error, quicken filtering convergence and improve filtering precision

    由於慣系統( lsins )的是發散的,某些初始狀態的會引起的漂移和,當觀測量只有位置時,卡爾曼濾波的收斂速度很慢,某些狀態(如方位角)很大,而以上除慣外的其它航傳感器直接提供的只是位置信息,為了改善濾波器性能,本文根據里計等傳感器的特點,提出了首先對狀態做出估計,然後在狀態估計的基礎上,進行卡爾曼濾波的方法。
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