Finding Cycles: periodic and Nonperiodic.

寻找周期：周期的和非周期的。

The window Fourier transform(WFT )is one solution to the problem of better representing the nonperiodic signal.

窗口傅里叶变换能够更好的解决关于非周期信号的表示问题。

This paper explains a new nonperiodic Amplitude-Phase Code, which has multi-level quantized amplitude and low auto-correlation sidelobes.

本文提出一种新的非周期幅相码，这种码具有多种幅度和相位，其自相关函数副瓣电平比较低。

Complex implies just that, nonlinear implies recursion and higher mathematical algorithms, and dynamic implies nonconstant and nonperiodic.

复杂意谓它就是那样，非线性意谓递归和更高数学法则，而动态意谓非常数及非周期。

Defected ground structure (DGS) is a nonperiodic structure proposed in recent years, which means machining various shapes of etching on the ground plane.

即缺陷接地结构，它是近年来提出的一种在微波平面电路接地版上刻蚀出非周期形状的结构。

We discuss the nonperiodic abnormal stripe noise due to the spaceborne SAR system itself, and present an area filtering method in two-dimensional frequency domain.

对于因雷达系统本身原因而产生的一些非周期不规则条纹噪声进行讨论，针对此类噪声提出一种二维频域区域滤波的算法。

Furthermore, the effect of Combinatorial Nonperiodic Defected Ground structure (CNPDGS) on the characteristic of the low-pass filter formed by the CNPDGS structure is studied.

分析了在原有的低通滤波器的基础上加入了非周期缺陷接地结构后对滤波特性的影响。

Two models of 2d photonic crystal of line defects and nonperiodic dielectric rods are established. The finite-difference-time-domain method is developed for the study of bandgap.

构建了介质柱间距变化的变周期结构以及介质柱半径线缺陷两种二维光子晶体模型，并将时域有限差分法用于其能带特性研究。

The scientific and philosophy location of complexity concept was discussed, and a definition was given that" there are many distinguishable states that are meaningful, uncertain and nonperiodic".

讨论了复杂性概念的科学及哲学定位，给出复杂性概念的一个界定：“存在多个有意义、不确定、非周期的可区分状态”。