航次估算 的英文怎麼說
中文拼音 [hángcìgūsuàn]
航次估算
英文
voyage estimates- 航 : Ⅰ名詞(船) boat; shipⅡ動詞(航行) navigate (by water or air); sail
- 次 : Ⅰ名詞1 (次序; 等第) order; sequence 2 [書面語] (出外遠行時停留的處所) stopping place on a jou...
- 估 : 估構詞成分。
- 算 : Ⅰ動詞1 (計算數目) calculate; reckon; compute; figure 2 (計算進去) include; count 3 (謀劃;計...
- 航次 : 1 (出航次第) the sequence of voyages or flights; voyage or flight number2 (出航的次數) the nu...
- 估算 : estimate; reckon (up)
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The simulation results show that the feature point detection and tracking algorithm is feasible. next, matched points based essential matrix estimation is studied. the spacecraft attitude and position parameters are derived from essential matrix and the scale of motion is recovered with range information from laser ranger taken in account
再次,研究基於匹配特徵點對的本質矩陣的估計演算法,給出了由本質矩陣求取空間探測器的姿態信息和位置信息的方法,並且結合激光測距儀信息,得到探測器的運動比例參數,實現軟著陸過程的導航。And in allusion to the shortcomings on the fitting of noises by least square, a new procedure is presented to modify the estimations of model parameter of the noise. it can control the effects of the correlation noise of except for first order self - correlation noise. using the model the error of gps / ins integrated navigation system is estimated
再次,針對卡爾曼濾波方程的前提條件不滿足而影響導航系統的精度的問題,應用時間序列分析理論提出了一種改進的噪聲模型參數估計演算法,對此演算法進行建模,模擬結果表明,該演算法能有效的控制一階自相關特性以外的噪聲對參數模型估計的影響,提高卡爾曼濾波精度。Use the magnetic vector for the observation information, the paper estimate the location and rate of the satellite, analysis of simulation results and the sources of error. to further enhance navigation accuracy, the paper study the unscented kalman filter, compare with the extend kalman filter. in the same initial conditions of the extend kalman filter, we do the simulation
其次,基於磁環境模擬系統的測量數據,本文研究了擴展卡爾曼濾波演算法,建立了衛星的運動學和動力學方程,以地磁場矢量為觀測信息,對衛星位置速度進行了估計,並分析了模擬結果及誤差來源,為了進一步提高導航精度,本文又研究了unscented卡爾曼濾波演算法,給出了原理及步驟,並與擴展卡爾曼濾波進行了比較分析。It was about the last day of our outward voyage, by the largest computation ; some time that night, or, at latest, before noon of the morrow, we should sight the treasure island
照最長的估算,那大約是我們航程的最後一天在那晚,或者說最遲在次日午時之前的某個時刻,我們就會看到寶島了。分享友人