傾斜海底 的英文怎麼說
中文拼音 [qīngxiéhǎide]
傾斜海底
英文
shelving bottom-
I went, for the third time into the sea, the sand was smooth and firm, and shelved gradually down.
這是我第三次進入大海,腳底下的沙子平滑堅實,逐漸的傾斜下去。This ship is built of aluminum alloy all - welded mono - hull, knuckle lines, single bottom, single deck, single engine, single propeller, single rudder, transom stern, raked stem and raked keel, deployed to transport passengers on class iii navigational area set forth by hongkong marine department
15 . 6m本船為鋁合金焊接單體船,型線為折角線型單底單甲板單機單槳單舵方艉,前傾艏柱傾斜骨,用於香港海事處規定之iii類航區接送旅客。The biggest problem is calculating the seabed slope angle of the unknown seabed
而對未知海底的傾斜角求解問題是解決波束角效應的難點之一。Lt is obvious that the decaying rule of average reverberation intensity is affected by scattering coefficient of sea floor, sound speed profile, inclination of bottom etc. the sea floor scattering function is the most importan factor to the intensity decaying rule
結果表明:海底散射方向性指數因子、海水聲速梯度、海底傾斜角等對海洋混響平均強度的衰減皆有影響。海底散射方向性指數因子對其影響最大,即適當選取海底散射模型是淺海近程混響建模的首要因素。Different results specify that the first kind of cost function is sensitive to the mismatch of ocean depth and receiver location, but is insensitive to sound speed profile ' s % $ jai8x9 @ t $ m & z mismatch and has high accuracy of depth localizaion ; the second kind of cost fimction is insensitive to all three kinds of mismatch, but its resolution of depth is very low ln order to overcome the cost function ' s sensitivity to mismatch, improvemedt of the accuracy of time delay estimation and model calculation may be adopted, when both conditions are reached, the sensitivity wiil be greatly reduced and the resolution of range and depth will be improved at the same time
模擬結果表明,第一類代價函數對海底深度和基陣傾斜失配是敏感的,對聲速失配卻不敏感,並且能夠獲得較高的深度定位精度;第二類代價函數對三種失配都不敏感,只是深度解析度較低。為了克服代價函數對失配的敏感性,可採用提高時延估計精度和模型計算精度的方法。當兩個條件滿足時,敏感性得到極大的抑制並獲得了較高的距離和深度估計精度。First, the formula for average intensity of ocean reverberation is deduced on the basis of ray theon " for monostatic case, then it is proved by computer simulation and experiment data
本文首先從分層介質的射線理論出發導出傾斜海底收發合置淺海近程海洋混響平均強度的近似表達式,並對其進行數值分析與實驗驗證。So, a new method for calculating the seabed slope angle called the differential method is put forward
為此,針對單波束測量提出了一種實用的海底傾斜角差分演算法。To get the genuine seafloor rock medium electrical model, data processing about seafloor magnetolluric raw signal requires information such as seafloor instrument bearing orientation, obliquity, and temperature, by which the real vector change bearing of seafloor magnetolluric fields can be acquired, and then the uniform explanation about the whole survey of multi station is obtained
為真實地獲取海底巖石介質的電性模型,在對海底大地電磁實測信號進行數據處理的同時,需參考海底儀器的方位朝向、傾斜姿態等信息,以便認識海底電磁場真實的矢量變化方向,進而實現對整個測網多站位的統一資料解釋。The sound speed profile is another important factor, the bigger sound speed gradient, the faster reverberation intensity decay and the other factor to the reverberation intensity decaying is sea floor inclination, the greater the slope angle, the slower reverberation intensity decav
其次,對混響強度影響的第二大因素是聲速梯度,聲速梯度越大,混響強度衰減越快。第三,海底傾斜角也會影響海洋混響的衰減,海底傾斜角越大,混響平均強度衰減越慢。To achieve this objective, the seafloor magnetolluric instrument must be equipped with the environmental parameter acquisition channel
為達到這一目的,海底大地電磁儀內部設有環境參數採集通道,該通道對諸如方位、傾斜、溫度等信息實施分時循環採集。分享友人