Introduction. In practical signal processing and its many applications. researchers and engineers try to find a number of harmonics and their frequencies in a time signal contaminated by noise. In this manuscript we propose a new approach to this problem. https://mysocialfeeder.com/story4381186/carbon-storage-simulation-and-analysis-in-beijing-tianjin-hebei-region-based-on-ca-plus-model-under-dual-carbon-background