余弦波

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。

The analysis results of these shift orthogonal functions in GSM channel, which is compared with that of conventional shaping filters such as square root raised cosine functions, show that it has better performance.

最后通过与常用的平方根升余弦函数波形在GSM信道中的数值解比较，说明了基于小波包函数的移位正交传输波形优于传统的波形。

At first, we constructed a family of smooth orthonormal bases of k-adic wavelets.

首先我们利用局部正弦与余弦基构造了L〓的k进小波正交基。

Investigate how to use Sin wave functions and Cosine functions to change the way that a system of coordinates work.

研究如何使用仙波函数和余弦函数改变一个系统的协调工作。

Using the direction cosines relative to three ULA axes, the correct pair is obtained, then the azimuth and elevation are estimated.

利用3个方向余弦估值进行配对，然后求得来波的方位角和仰角估计。

Using the direction cosines relative to the three URL axes, the correct pair is obtained, and the azimuth and elevation angles are estimated.

利用三个方向余弦估值进行配对，然后求得来波的方位角和仰角估计。

Also, we have shown experimentally that the optimal multi-bank Haar wavelets perform better than DCT in image compression.

同时，我们用图像缩编码的方法验证了最优多进Haar小波的性能优于离散余弦变换的。

Respective analytical and general expressions were derived according to different commonly-used PASs of uniform, cosine, Gaussian and Laplacian distribution.

针对常用的均匀分布、余弦分布、高斯分布和拉氏分布的入射波角度功率谱，分别推导了多谱勒功率谱解析式。

By using Wavelet Transform and the Discrete Cosine Transform,the effective feature extractions of different characters are got.

利用小波变换和离散余弦变换，提取不同字符的有效特征。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。