对CA码进行bpsk调制后得到一个GPS中频信号，画出其时域和频域图

利用制作分形几何图形,给出了几个典型曲线！(Making use of fractal geometry)

说明：  6. 在三条径的瑞利信道中，对于OFDM： (1) 请设计一种具体的导引辅助的信道估计方法，用Simulink进行仿真。画出比特信噪比与信道估计均方误差的关系曲线和比特信噪比与误码率的关系曲线。 (2) 设频率已同步，请设计OFDM一种具体的采用循环前缀进行时间同步方法，用Simulink进行仿真，画出比特信噪比与捕获概率的关系曲线。 (3) 设时间已同步，请设计OFDM一种具体的采用循环前缀进行频率同步方法，用Simulink进行仿真，画出比特信噪比与频率同步误差的关系曲线。(6. In the three-path Rayleigh channel, for OFDM: (1) please design a specific navigation-assisted channel estimation method and use Simulink for simulation.The relation curves of bit signal-noise ratio and channel estimation mean square error and the relation curves of bit signal-noise ratio and bit error rate are drawn. (2) if the frequency has been synchronized, please design a specific method of time synchronization using cyclic prefix in OFDM. Simulink is used for simulation to draw the relationship curve between bit-snr and acquisition probability. (3) if time has been synchronized, please design a specific method of frequency synchronization using cyclic prefix in OFDM. Simulink is used for simulation to draw the relationship curve between bit signal-to-noise ratio and frequency synchronization error.)

低通滤波器，低通滤波器 低通滤波器 低通滤波器 低通滤波器 (low-pass filter, Low-pass filter l ow-pass filter l ow-pass filter l ow-pass filter low-pass filter)

关于常规信号，线性调频信号和相位编码信号的检测和估计(detection and analaysis of normal signal, LFM and phase coding signal.)

这本书是针对英语高级本科生和研究生的。尼林，科学，数学和计算。它希望熟悉微积分、概率论和线性代数为科学家和工程师开设一年的数学本科课程。传统的信息论课程不仅涵盖美香农丰富的理论思想，也是沟通的实际解决方案-问题。这本书更进一步带来了贝叶斯数据建模，蒙特卡罗方法、变分方法、聚类算法和神经网络网络。(Information Theory, Inference, and Learning Algorithms)

GPS高程拟合，包括源代码，界面，请认真书写上传资料(GPS Elevation Fitting)

说明：  4. 试说明卷积编解码的工作原理： (1) 使用Simulink仿真卷积编码，并用Viterbi译码的方法进行解码，其中的编码、译码全部是自己编写代码(S-Function方式)，不是调用Simulink的已有编码、译码函数。 (2) 请在加性白高斯噪声信道中，画出比特信噪比与误码率的关系曲线。(4. Try to explain the working principle of convolutional codec: (1) Simulink was used to simulate convolutional coding, and Viterbi decoding method was used for decoding. The coding and decoding were all written by oneself (s-function method), rather than calling the existing coding and decoding functions of Simulink. (2) in the additive white gaussian noise channel, please draw the curve of the relationship between bit signal-to-noise ratio and bit error rate.)

基于镜像延拓法的emd分解，用于解决端点效应(EMD decomposition based on mirror extension method to solve endpoint effect.)

GPS开发程序实例，可作为stm32开发GPS应用系统的参考例程。(GPS development process instance, can be used as stm32 development GPS application system reference routines.)

基于ESPRIT和Root-MUSIC算法的极化MIMO雷达DOA和极化参数估计(Polarization MIMO radar in the ESPRIT and Root-MUSIC algorithm for DOA and polarization parameters estimates)