danshuitingqishifan

说明：  卡尔曼滤波，对一个做匀加速直线运动的目标进行跟踪，跟踪效果较好(Kalman filtering, do a linear motion with constant acceleration target tracking, track better)

本程序主要在MATLAB环境下实现笔状阵列天线的遗传算法的优化。(This procedure mainly in the MATLAB environment to achieve the pen-shaped array antenna genetic algorithm optimization.)

在发射端发射大时宽、带宽信号，以提高信号的速度测量精度和速度分辨力，而在接收端，将宽脉冲信号压缩为窄脉冲，以提高雷达对目标的距离分辨精度和距离分辨力。(In order to improve the speed measurement accuracy and speed resolution of the signal at the transmitter, the wide pulse signal is compressed into a narrow pulse at the receiving end to improve the range resolution and range resolution of the radar.)

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)

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)

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.)

说明：  QPSK通信调治与解调DSP开发C++代码，可以在TI DSP上实现(QPSK modulation and demodulation communications DSP development of C code can achieve TI DSP)

把地理区域分成一个个小区，蜂窝系统在该区域内提供无线覆盖。把可用的频谱分成很多信道，每个小区分配一组信道。使用频分双工（FDD）。在小区间进行频率利用，N个小区构成一个簇，簇间进行频率复用。定义了传播特性（信道参数）以及同频小区的位置。信道的参数包括：小区半径，路径损耗指数，以分贝为单位的对数正态阴影的标准差，基站发射功率级，移动台发射功率级，每个小区的扇区数，扇区化天线的正反向比，要仿真的瞬时位置的组数，同频干扰阈值。(To a geographical area is divided into small areas, cellular systems in the region to provide wireless coverage. The available spectrum is divided into multi-channel, each plot the distribution of a group of channels. The use of frequency division duplex (FDD). In the district between the frequency of use, N plots constitute a cluster, cluster between frequency reuse. The definition of the propagation characteristics (channel parameters), as well as with the frequency of residential location. Channel parameters include: cell radius, path loss index to decibels for units Lognormal shadow of the standard deviation, the base station transmitter power level, mobile station transmitting power level, the number of sectors in each district, sector of the antenna the pros and cons to the ratio, to the transient simulation of the group a few positions, the same frequency interference threshold.)

说明：  协作通信中DF模式。程序中也只仿了一个中继时的编码转发协作形式。(cooperative diversity DF)

11.txt为产生信道冲激响应的源码， 22.txt为各种OFDM信道估计算法的源码(11.txt for producing channel impulse response of the source, 22.txt for a variety of OFDM channel estimation algorithm for the source)