Title :
Simulation and spectral analysis of frequency converter of device for 3D measurements of turbulent air movement
Author :
Shirokov, Igor ; Skorik, Ivan ; Kamynin, Ivan
Author_Institution :
Sevastopol Nat. Tech. Univ., Sevastopol, Ukraine
Abstract :
The acoustic method of measurement of speed and direction of turbulent air movement is discussed in the paper. Presented method is based on homodyne frequency conversion of ultrasonic signal. The changing of ultrasonic wave phase progression in relation to air movement is considered. The measuring system heterodyne signal is obtained from origin signal by means of frequency shift with the saving of ultrasonic signal initial phase. The spectral analysis of frequency transformation was carried out in this paper. This analysis was implemented by the simulation and the spectral measurement of real digital-level signal.
Keywords :
atmospheric measuring apparatus; atmospheric techniques; atmospheric turbulence; flow measurement; frequency convertors; geophysical signal processing; heterodyne detection; spatial variables measurement; ultrasonic measurement; velocity measurement; acoustic method; frequency converter simulation; frequency converter spectral analysis; frequency transformation spectral analysis; measuring system heterodyne signal; turbulent air movement 3D measurements; turbulent air movement direction measurement; turbulent air movement speed measurement; ultrasonic signal homodyne frequency conversion; ultrasonic signal initial phase; ultrasonic wave phase progression change; Acoustic measurements; Acoustics; Frequency conversion; Instruments; Oscillators; Phase shifters; Ultrasonic variables measurement; Homodyne frequency conversion; Phase measurement; Phase shift; Spectrum analysis; Ultrasonic waves;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2010 IEEE International
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-9565-8
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2010.5649158
