Secondly, the performance simulation and analysis of these methods such as linear interpolation polynomial interpolation,Spline-cubic interpolation and an improved dicision-directed are performed.

首先分析了基于維納濾波理論的二維維納濾波估計(jì)和兩個(gè)級(jí)聯(lián)的一維濾波器的信道估計(jì)方法午夜免费电影网。

So in this paper, first, the ELM is improved by taking the interpolation process under absolute coordinates, so that the horizontal interpolation could be taken in a horizontal plain of the same altitude, thus the problem of unreasonable interpolation sources is prevented.

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In addition, the linear interpolation problem is discussed, midpoint sampling interpolation and double-point sampling interpolation are provided. The convexconcave property of linear error is studied.

另外本文還研究了并聯(lián)機(jī)床的線性插補(bǔ)問題操操干操干，提出了中點(diǎn)采樣插補(bǔ)法和雙點(diǎn)采樣插補(bǔ)法，文中對(duì)采樣偏差的凹凸性進(jìn)行了分析18禁美女裸体黄色网站。

The multivariate polynomial interpolation problem is a classical mathematical problem that is widely used in many fields, such as multivariate function list, surface design and finite element method. In recent years, multivariate polynomial interpolation has been focused by many people, of which the geometric topological struction of sets of interpolation nodes is also much concerned by us.

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In the study on application of Geography Information System, spatial interpolation is a basic method for converting vector data model into grid data model, of which inverse distance interpolation and linear interpolation are widely used.

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Spatial interpolation methods and principles of marine optical data based on GIS is researched, including inverse distance weighted interpolation, ordinary Kriging spherical model and exponential model interpolation.

研究基于GIS的海洋光學(xué)調(diào)查數(shù)據(jù)空間插值方法及其原理世界午夜A片免费观看com，主要探討了反距離加權(quán)插值法99久久免费看,视频、普通克里格法的球體模型和指數(shù)模型算法。

The research of both theories and practices of gridding in the dissertation shows that: Linear interpolation based on triangulation is simple computationally and fast, but its gridding results isn't smooth and its precision is low; Multiquardric method is also simple computationally with high precision and good effect, but its gridding is slow because it is based on global calculation; Minimum curvature method is fast with high precision and good effect, but its gridding quickly degrades over areas with sparse data control when grid spacing smaller than the actual grid spacing is used; Ordinary Kriging method is high-precision, but its gridding is slow because of large calculation; Inverse interpolation is a computationally fast, efficient and robust method with high accuracy and perfect effect, and its gridding results of different gridding orientations are basically identical. Inverse interpolation is suitable for thegridding of geophysical irregular data, especially for large-scale geophysical irregular data.

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The algorithm adopts classical bilinear interpolation algorithm in the area of image other than the edges;concurrently the stairway detection is further made according to the outcomes of Canny edge detection to sift out the horizontal and vertical edges which will not produce jaggies distortion;but in edge areas where severe jaggies distortion will occur when using classical algorithm,the stairway thinning-based interpolation algorithm is implemented.This interpolation algorithm keeps stairways from being enlarged when zooming out the image,hence the goal of reducing jaggies distortion is achieved.

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Boundary polynomial point interpolation mesh-free method and boundary radial point interpolation mesh-free method were presented, based on polynomial basis and radial basis respectively for transient eddy current analysis, and their interpolation shape functions satisfy the Kronecker delta function and the essential boundary conditions can be directly imposed on the boundary nodes. An example on analyzing transient eddy current of a square metal column was set to prove the validity of the proposed methods, and a comparison on accuracy between BPPIM and BRPIM was analyzed as well.

運(yùn)用多項(xiàng)式點(diǎn)插值法和徑向基點(diǎn)插值法構(gòu)造形函數(shù)，推導(dǎo)了適合于工程電磁場(chǎng)瞬態(tài)渦流問題的多項(xiàng)式基點(diǎn)插值邊界無單元方法和徑向基點(diǎn)播值邊界無單元方法黄色高潮视频在线免费观看，這兩種方法的空間插值形函數(shù)滿足Kronecker delta條件国产精品-色哟哟，從而強(qiáng)加邊界條件可以直接施加在邊界點(diǎn)上，以金屬長(zhǎng)方柱的瞬態(tài)渦流分析作為數(shù)值算例无吗黄片免费视频，證實(shí)了兩種方法的正確性和有效性日韩欧美国产三级片，并對(duì)兩種基類的點(diǎn)插值法進(jìn)行了精度分析和比較。

There are some mature curve fitting methods in the reverse engineering, such as Lagrange interpolation, piecewise polynomial interpolation, least square method and spline interpolation.

成熟的曲線擬合方法有拉格朗日插值法一级二级黄色视、分段多項(xiàng)式插值法囯产免费看黄色视频、最小二乘法和樣條曲線插值法等，本文在分析各自優(yōu)缺點(diǎn)的基礎(chǔ)上AV人妻精品无码一区，提出選用三次樣條曲線擬合法美国无码在线。