ydn108_V5.2

求阵列天线方向图，矩形栅格点平面阵方向图。(Array antenna pattern)

说明：  实现雷达的空间谱估计，采用MUSIC算法，可实现多目标的位置估计(Space spectrum estimation of radar)

雷达回波脉冲压缩常用代码，包括线性调频信号的时频特性，脉冲压缩，压缩后拓展等(Common codes for radar echo pulse compression, including time-frequency characteristics of LFM signal, pulse compression, expansion after compression, etc.)

电磁兼容项目组闪电回击模拟项目，通过FDTD建模，方针计算了闪电放电特性，已经周围的电磁环境(Emc project lightning back, through FDTD modeling simulation project is calculated, policy, has lightning discharging characteristics of the electromagnetic environment around)

前后向平滑算法：算法的原理很简单，以五点三次平滑为例。取相邻的5个数据点，可以拟合出一条3次曲线来，然后用3次曲线上相应的位置的数据值作为滤波后结果。简单的说就是 Savitzky-Golay 滤波器 。只不过Savitzky-Golay 滤波器并不特殊考虑边界的几个数据点，而这个算法还特意把边上的几个点的数据拟合结果给推导了出来。(Before and after the smoothing algorithm: the principle of the algorithm is very simple, to 5.3 times smooth as an example. Take the adjacent five data points, you can fit out a curve 3 times, and then use the corresponding position on the third time the data value as the filtered results. Simply said is the Savitzky-Golay filter. However, the Savitzky-Golay filter does not specifically consider several data points of the boundary, and this algorithm also specifically to the edge of a few points of the data fitting results derived.)

DS-EV证据理论消除了当不同证据冲突过大时，判决的错误型。自己论文里所用的代码，用在认知无线电中。函数文件。(DS-EV evidence theory eliminate the wrong judgement when supplied evidence have strong contradictory This file has been used in my thesis in CR field. hope it can help you.)

说明：  用于对基于GOLD码的串行捕获算法，可以自定义信噪比，待捕获信号参数，代码分成搜索跟踪和捕获两部分，其中搜索的步长等参数也可以自定义，代码中acquiresignal.m部分为最终捕获相位展示的主程序。(For the serial acquisition algorithm based on GOLD code, we can customize the signal-to-noise ratio and the parameters of the signal to be captured. The code is divided into search part and capture part, The parameters such as search step can also be customized. Acquiresignal.m part is the main progress to output the results of the capture of phase.)

认知无线电中，采用循环特征检测的频谱检测算法matlab仿真程序(Using cyclic feature detection spectrum detection algorithm)

用于仿真多普勒频移与每条反射波以及到达角之间的关系,可以自行修改参数得到更多仿真结果,MATLAB2009A上运行通过(For the simulation of Doppler frequency shift and arrival angle of each reflected wave, as well as the relationship between, you can modify the parameters of its own to get more simulation results, MATLAB2009A run through the)

包括载波跟踪和伪码相位跟踪，用Matlab实现直接序列扩频信号的跟踪程序。(Including pseudo-code tracking and carrier phase tracking using Matlab implementation of direct sequence spread spectrum signal tracking procedures.)