基于TOPSIS的无失真传输系统实验及优化研究

In this paper, the basic concept of undistorted transmission is discussed, and the condition of undistorted transmission in theory is explained by Fourier transform, and the sampling condition for undistorted signal transmission is described. Then the fundamental principle of the experimental module is studied, the signal is analyzed theoretically and the experimental scheme is optimized. On the basis of using XH-03A test chamber for hardware connection experiment, we added theoretical analysis and MATLAB simulation, and proposed and applied the adaptive TOPSIS evaluation model to evaluate the experimental results. We used 10 sinusoidal input signals of different frequencies to form the data set for testing, and took 10 output signals processed by the nonlinear system as the training set. After comparing with the similarity index of SSIM, it was found that the accuracy of the proposed adaptive TOPSIS evaluation model was up to 90% and the reliability was extremely high. Finally, we find that the misjudgment of this model is caused by the fact that its principle only considers the distance between waveform and threshold value without considering the whole waveform comprehensively.