xin1

我们设计和实验证明 布拉格光栅波分复用器 三波长的平面光波电路复用 公交车站台。1310和1550 nm的光，被设计成 由一个半周期通过定向耦合器分离后 和一个完整的周期耦合作用与0.07和0.19分贝的损失， 分别。1492 nm的光反射回来的布拉格 光栅对定向耦合器及其制作少损失 超过2分贝。我们也介绍和讨论新概念 集成光学三工收发器，使用此过滤器。 (We designed and experimentally demonstrated a Bragg grating-assisted wavelength-division-multiplexing filter for the three-wavelength multiplexing on a planar-lightwave-circuit platform. The 1310- and 1550-nm lights were designed to be separated after passing the directional coupler by a half-cycle and a full-cycle coupling actions with losses of 0.07 and 0.19 dB, respectively. The 1492-nm light was reflected back by a Bragg grating fabricated on the directional coupler and its loss was less than 2.0 dB. We also introduced and discussed the new concept of an integrated optical triplexer transceiver using this filter.)

数字信号处理用的快速傅里叶变化，可提供分段，复盖（Overlap)，时程图，频谱图。(digital signal processing using Fast Fourier changes, can provide sub-covering (Overlap) time- and frequency spectrum.)

在：1）理想无噪生条件，2）SNR=10dB，3）SNR=20dB，4）两径衰落信 道{0, 0}、{-6dB，-10symbol}条件下，分别产生 1000 个符号的 QPSK、8PSK、 16QAM 星座点， 画出信号序列的星座图， 提交电子版信号产生、 加噪、 显示的*.m 程序和电子版 WORD 报告。 报告要求给出原理描述、 框图和分析说明输出结果。(In: 1) an ideal noiseless Health conditions, 2) SNR = 10dB, 3) SNR = 20dB, 4) two-path fading channel {0, 0}, {-6dB,-10symbol} under conditions generate 1,000 symbols QPSK, 8PSK, 16QAM constellation points, draw constellation signal sequence, submit an electronic version of the signal, noise, display*. m procedures and electronic WORD report. Reporting requirements given Principles, and the analysis shows a block diagram of the output.)

机床主轴回转精度模拟，可以求其回转精度，圆度误差等(Spindle rotation accuracy simulation, you can find its rotary precision, roundness error, etc.)

用于分数阶傅里叶变换时的参数估计，峰值点搜索等(Parameter estimation for fractional Fourier transform at the peak point search, etc.)

说明：  空间计量 elhorst_model（带中文解释）(Spatial metrology elhorst_model (with Chinese interpretation))

非常好的matlab GUI开发经验。 一. 基本知识： 二. Matlab的I/O文件操作使用技巧和总结: .......(Very good matlab GUI development experience. One. Basic knowledge of: the Second. Matlab' s I/O file operations using the techniques and concluded: .......)

matlab中有语音处理所需的分帧函数和重叠相加函数，调用起来很简单。(matlab in the sub-frame required for voice processing functions and overlap-add function, call it so easy.)

ConvolveByRiemannSum assumes that x(t) and h(t) have finite support, and that the user provides samples of these functions in two vectors, x and h. These vectors contain samples of x, sampled at time points given in vector tx = tx_min:Delta_t:tx_max and samples of h sampled at time points in vector th = th_min:Delta_t:th_max, respectively. The functions x and h are assumed to be zero outside tx_min and tx_max and outside th_min and th_max, respectively. Note that while tx_min, tx_max, th_min, and th_max may differ, the time sample vectors must share the same time-interval, Delta_t.

插值和拟合 matlab算法实现 可以直接调用(Matlab interpolation and fitting algorithm can be directly called)