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- This thesis bases on the acoustic wave equation, uses the wavefield extrapolation operator in frequency-wavenumber domain to analyze the migration velocity error. 声学波动方程描述了声波动现象的物理本质,本文基于声学波动方程,借助于频率波数域的波场延拓算子来开展偏移速度误差的分析。
- A f-x Explicit migration is carried out through spatial convolution of finite-length extrapolation operator with frequency slice, which is concise, high efficient, and easy to extend from2 D to3 D. 频率空间域显式偏移利用有限长度的褶积算子,通过对不同的频率进行空间褶积来实现偏移成像,且具有简洁、效、于扩展等特点。
- Accounting for both accuracy and computational efficiency, we use the explicit short extrapolation operator scheme in a complicated medium layer and the split step Fourier operators in a simple medium layer during depth extrapolations. 文中进一步发展了显示短算子的单程波算法,提出了一个加权二次规划的显式短算子设计方法,这一算子设计方法更好地保证了显示短算子算法的稳定性,使得可用更短的算子取得较高的精度,从而使三维显式短算子单程波算法有更高的计算效率和精度。
- Keywords difference formation;bilinear interpolation;extrapolation operator; 差分格式;双线性插值;外推算子;
- Loosely, a mathematical or logic operator. 不严格地说,一种数学或逻辑运算符。
- That store operator ripped me off. 那个商店的营业员把我骗了。
- The operator told the caller that the line is busy. 接线生告诉打电话的人对方电话占线。
- Ring the operator and ask for Freefone 8921. 接通接线生,然後要免费通话8921号。
- The intricate machine requires a skilled operator. 这种复杂精细的机器须由技能熟练的人操作。
- Be careful with him -- he's a cute operator. 对他你得留神,他是个精明圆滑的家夥。
- extrapolation operator 外推算子
- Use data extrapolation to forecast the sales data. 使用数据外推法来预测销售数据。
- Do you know the telegraph operator living over the way? 你认识住在路对面的那个报务员吗?
- She is the local representative for a British tour operator. 她是一位英国旅游经营者的当地代表。
- Operator, we are cut off. Can you reconnect me, please? 接线员,我们的电话断了。请再给我接一下可以吗?
- Operator, please get me Bank of China, Beijing branch. 接线员,请给我接中国银行北京分行。
- The radio operator sent (out) an appeal for help to headquarters. 无线电报务员向司令部发出求救信号。
- The operator answered the phone with a perfunctory greeting. 接线员接通电话,象征性的打了招呼。
- Operator makes a call to Janson. 接线员给詹森打电话。
- Their age can be determined by extrapolation from their growth rate. 它们的年龄可从其生长速度来推定。