Using method frequency scanning based on direct digital synthesizers for geotechnical monitoring of buildings

Abstract

The possibility of using the principle of frequency scanning as an alternative to the spectral-time analysis method for isolating the own frequencies of structures to provide their geotechnical accelerometric phase-metric method is considered in the article. As the devices realizing this method, direct digital synthesizers, are considered, their determining advantages are indicated and the main drawback associated with the presence of a lot of parasitic spectral components in the spectrum of the synthesized signal is indicated