GPSsignal_acq

说明：  里面包含四种情境的信道估计模型 比较了他们的优缺点(There are four scenarios in the channel estimation model to compare their advantages and disadvantages)

利用MATLAB/simulink实现4ASK调制(Using matlab simulink for simulation modulation 4ASk)

GPS测量数据处理可分为基线解算和网平差两个阶段，基线解算就是利用ＧＰＳ接收机接收到的 载波相位观测值做为基本观测值，对其进行差分处理。(GPS data processing can be classified as the baseline solution and flat screen two phase difference, baseline solution is the use of GPS receivers to carrier phase observation value as the observation values. The of differential treatment. )

说明：  基于MATLAB语言实现了BPSK、QPSK和QAM在数字通信中的误码率性能，并与理论性能进行了比较。实现了两个发射天线的分集，分析了分集提高误码率性能的原因和实质。(Based on MATLAB language, the BER performance of BPSK, QPSK and QAM in digital communication is realized and compared with the theoretical performance. The diversity of two transmit antennas is realized, and the reason and essence of diversity improving BER performance are analyzed.)

GPS信号捕获程序,采用串行搜索算法,并自带三段中频采样的数据.(GPS signal acquisition procedures, using serial search algorithm, and bring their own copies of the three IF sampling data. )

说明：  QPSK ALmouti 2x2 mimo figure

16QAM调制信号的GAD定时恢复，对定时恢复环路的验证和实现(Gardner Timing Recovery for 16QAM)

构建规则网络模型，研究人员可以自己修改网络参数，构建不同规模的规则网络模型。(Rules to build network model, the researchers can modify the network parameters, rules of different scale network model was constructed. )

说明：  数值计算答案，Chan三维定位算法，大家加油。(Scientific Computing's answer.)

三维元胞机模拟教室疏散代码，分析在随机教室情况下人员流动情况。(Three-dimensional cellular computer simulation classroom evacuation code)