signal-and-system-experiment

IT 行业应届生求职大礼包，行业就业分析等相关介绍。(IT Industry Part time job spree, industry-related job analysis description.)

this code implement a new face recognition method

中国范围内的青藏高原shp文件，适用于arcgis和matlab/grads(the shape file of Tibetan Plateau in China s domain)

dijkstra /shorest route

FMCW汽车防撞雷达的多目标信号处理方法研究，介绍了汽车防撞雷达的信号处理流程及相关方法(Multi-objective signal processing method FMCW automotive collision avoidance radar, introduced the automotive collision avoidance radar signal processing and related methods)

利用基于OE模型的预报误差法对传感器的阶跃响应数据进行辨识建模(OE model based on the prediction error of the step in response to sensor data identification modeling)

一种新的符号定时和载波频率同步算法,该算法将OFDM符号分成几部分。它使用相关性和积累在几个OFDM 符号获得估计函数。当部分的长度小于ISI自由地区,该算法可以识别它。然后估计的最优符号定时和载波频率偏移可以获得。计算机仿真结果表明,该算法不仅可以跟踪时变信道变化但也有较小的MSE比ML估计算法。(A new symbol timing and carrier frequency synchronization algorithm is presented and the algorithm divides the OFDM symbol into several parts. It uses correlation and accumulation in several OFDM symbols to acquire estimation function. When the length of part is smaller than that of ISI free region , the algorithm can distinguish it. Then the estimation of optimal symbol timing and carrier frequency offset can be acquired .The computer simulation results show that the proposed algorithm not only can track time varying channel change but also has smaller MSE than that of ML estimation algorithm.)

将输入d进行扩张，方法是在d的每个数据中插入M-1个零值。 如输入d=[1,2,3,4] M=3 输出out=[1 0 0 2 0 0 3 0 0 4 0 0](To expand the input d, the method is to insert each data d, M-1 zero value. If the input d = [1,2,3,4] M = 3 output out = [1 0 0 2 0 0 3 0 0 4 0 0])

遗传算法是模拟达尔文的遗传选择和自然淘汰的生物进化过程的计算模型。它的思想源于生物遗传学和适者生存的自然规律，是具有“生存＋检测”的迭代过程的搜索算法。遗传算法以一种群体中的所有个体为对象，并利用随机化技术指导对一个被编码的参数空间进行高效搜索。(Genetic algorithm is simulated Darwinian natural selection of genetic selection and evolution process model. It' s thought from biological genetics and survival of the fittest laws of nature, is a " survival+ detection" iterative process of search algorithm. Genetic algorithms in a group all the individuals targeted, and technical guidance on the use of a randomized coded efficiently search parameter space.)

以matlab做pitch-shift的功能展示.基於phase-vocoder技術在頻域上做pitch-shift.(In matlab to do the pitch-shift function display based on phase-vocoder techniques in the frequency domain to make pitch-shift.)