![]() 29 indicate that the WOA-VMD-BD method can efficiently eliminate noise from the data and procure well-defined layered profiles of the glacier. Experiments on the detected signals of the Mengke Glacier No. The simulation results indicate the strengths of this method in enhancing the signal-to-noise ratio (SNR), and its performance is better than empirical mode decomposition (EMD). Finally, according to the BD, the relevant IMFs are selected for signal reconstruction and denoising. ![]() Then, VMD is performed on the signal to obtain multiple intrinsic mode functions (IMFs). Firstly, a fitness function for WOA is established based on permutation entropy (PE), and the number of decomposition modes K and the quadratic penalty factor α in the VMD are optimized using WOA. This paper proposes a denoising method for ice-penetrating signals based on the combination of whale optimization algorithm (WOA), variational mode decomposition (VMD), and the improved Bhattacharyya distance (BD). In the verification experiment, ice-penetrating signals are inevitably polluted by noise, affecting the accuracy and reliability of glacier detection. Glaciers are suitable scenes on the earth for lunar penetrating radar verification. Chang’E-7 will be launched around 2026 to explore resources at the lunar south pole.
0 Comments
Leave a Reply. |