dpfcmatlab

about watermarking for images and text

有关速率的分岔图程序，图像比较清晰，可下载参考。(For the rate of the bifurcation diagram of the program, the image is relatively clear, can be downloaded reference.)

小波阈值自动选取方案去噪，并用HHT对去噪后的轴承信号进行处理，提取故障特征。(Wavelet threshold de-noising program automatically chooses, for bearing with HHT denoised signal processing, fault features.)

双极性二进制基带传输系统的仿真和误码性能验证 ①．发送信号的星座图，发送和接收信号的波形，不同信噪比情况下，接收信号的星座图 ②．画出无信道编码时，误比特率的理论曲线和仿真曲线，以及有信道编码时误比特率的仿真曲线 ③．解释以上获得的各种结果的合理性 ④．选做：选用不同纠错能力的信道编码方法，比较信道译码后的误码率(Simulation and Error Performance Verification of Bipolar Binary Baseband Transmission System (1) Constellation diagram of transmitted signal, waveform of transmitted and received signal, constellation diagram of received signal under different signal-to-noise ratio (2) Draw the theoretical and simulation curves of BER without channel coding and the simulation curves of BER with channel coding. (3) Explain the rationality of the results obtained above. (4) Choose: Choose channel coding methods with different error-correcting abilities to compare the bit error rate after channel decoding.)

基于LMS的时延估计算法LMSTDE，改方法的改进版本为ETDE算法，会在稍后上传(Time delay estimation algorithm based on LMS LMSTDE, change the method of an improved version of the ETDE algorithm, will be uploaded later)

The file calculates and plots FM noise sidebands for a carrier. It also does sinusoidal modulation. This simple way of adding noise to a carrier is useful for simulation of PLLs. It turns out, though, that the mean of the randn function is not as close to zero as it could be, and this causes the fft to generate extra sideband energy, which makes it appear as if the noise is not what would be expected. This program gets around this by adding a fudge factor to the randn results to eliminate this problem. It took me ages to figure this out, I hope to reduce a similar effort for others

BP neural netowrk regression

SLR 定位算法的MATLAB实现，开始SL_R 定位了Num个未知节点。初始部分花时13秒左右，优化部分花时80秒左右。(SLR positioning algorithm to achieve the MATLAB, start the SL_R positioning Num unknown node. The initial part of flowering time of about 13 seconds, optimization of part when the flower 80 seconds.)

自动检测车牌号，进行图像分析，并进行相应和相关的处理(Automatically detect the license plate number)

计算升力面非定常气动力的偶极子网格法MATLAB程序(Matlab functions to calculate unsteady aerodynamic pressures on a lifting surface using doublet lattice method.)