recursive algorithm中文什么意思

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1. Chapter two is focused on the wang - ball curves , including definition , properties and recursive algorithms . using the dual functional of the wang - ball basis , the author derives the subdivision algorithms for the wang - ball curves for the first time and then obtains some identical equations of calculation combination
   第二章介绍wang - ball曲线的定义及性质，以及wang - ball曲线的递归求值算法，利用wang - ball基函数的对偶泛函，作者在这里给出wang - ball曲线的显式细分算法，并由此导出几个计算组合恒等式。
2. Under the condition of " comparatively weak correlation between the two noises involved , coherence function is used as a frequency domain amplification factor for improving snr of the output signal to the filter and the speech enhancement effect . meanwhile , a real - time recursive algorithm is put forward in substitute for current algorithms based on short time fourier transform . the new algorithm will simplify computations and will be suited for real - time implementation together with the adaptive systems
   接着针对上述nanc系统两路输入信号噪声相关性弱的情况，用相干函数作频域增益因子来提高输出信噪比与改善语音增强效果，同时，通过一种实时迭代算法解决了短时傅氏变换计算量大的问题，简化了计算，便于实时处理与实际应用。
3. Several typical fault signals in electromechanical system are analyzed with it . in addition to the improved harmonic wavelet in chapter 4 , a new half - complex wavelet is presented to improve the complex wavelet , which is given by chaari . o . a unilateral recursive algorithm is derived to improve the real - time characteristic
   仿真分析中利用该算法实时消去特定频率的干扰信号，突出故障特征信号，提高故障特征信号的提取能力，该算法还成功地解决了电力系统单相电路瞬时谐波及无功电流的检测问题。
4. Starting from the collins formula , a recurrence equation of hermite - cosine - gaussian ( hcg ) beams propagating through a paraxial abcd system with a hard - edged aperture is derived , from which the analytical propagation expressions for apertured hcg beams of any order can be derived by using the recursive algorithm
   从collins公式出发，推导出了厄米?余弦?高斯光束通过有硬边光阑近轴abcd光学系统传输的递推公式。由递推公式，借助迭代算法，得出受光阑限制的任意阶厄米?余弦?高斯光束的解析传输公式。
5. Finally , a method is put forward to construct the nurbs curves on sphere , which extends the de boor recursive algorithm in r3 to one on the sphere by replacing the geodesic distances for the lines and studies their many geometric properties analogous to those in euclidean spaces , such as the differential property , the local property , the parameter invariance under a projective transformation , and so on
   两种方法均给出误差估计，使逼近螺线可达到任何预先给定的精确阶。最后，给出球面nurbs曲线生成算法：用球面上测地线? ?劣大圆弧代替直线段，将欧氏空间r ~ 3中的deboor递推算法推广到球面上构造曲线。