Title :
Frequency estimation method for measuring time-varying single frequency from digitized waveform
Author :
Maru, Koichi ; Fujii, Yusaku ; Hessling, Jan Peter ; Shimada, Kazuhito
Author_Institution :
Dept. of Electron. Eng., Gunma Univ., Kiryu
Abstract :
A frequency estimation method (ZFM: zero-crossing fitting method) for measuring time-varying single frequency is applied to determine the velocity of the mass for a space scale. The difference between the ZFM and conventional zero-crossing method used in typical electric frequency counters is discussed. The velocity derived from estimated Doppler frequency is evaluated with considerably lower level of noise using the ZFM instead of the conventional method for the same downsampling ratio.
Keywords :
Doppler effect; frequency estimation; frequency measurement; time-varying networks; Doppler frequency; digitized waveform; electric frequency counters; frequency estimation; time-varying single frequency; zero-crossing fitting; Counting circuits; Extraterrestrial measurements; Force measurement; Frequency estimation; Frequency measurement; Mechanical variables measurement; Optical interferometry; Optical noise; Testing; Velocity measurement; digitizer; frequency estimation; optical interferometer; precision measurement; zero crossing;
Conference_Titel :
Industrial Electronics and Applications, 2009. ICIEA 2009. 4th IEEE Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-1-4244-2799-4
Electronic_ISBN :
978-1-4244-2800-7
DOI :
10.1109/ICIEA.2009.5138844
