Potential Accuracy of Estimation of the Information Parameter of a Homodyne Laser Doppler Vibrometer Signal
- 13 Downloads
This paper describes the analysis of the potential accuracy of estimation of the signal modulation index of a homodyne laser Doppler vibrometer with frequency modulation and known and unknown non-information parameters of the signal. The Rao — Cramer inequality is used to obtain expressions for calculating the lower bound of variance of the modulation index estimate and study its relationship with a signal/noise mixture. Recommendations on the choice of conditions for measuring the amplitude of vibro-displacement by the homodyne Doppler laser vibrometer are given.
Keywordshomodyne laser Doppler vibrometer signal modulation index lower bound of the estimate variance
Unable to display preview. Download preview PDF.
- 1.Yu. F. Zastrogin, O. Yu. Zastrogin, and A. Z. Kulebyakin, Laser Devices for Vibration Control and Precise Positioning (Mashinostroenie, Moscow, 1995) [in Russian].Google Scholar
- 2.V. A. Grechikhin, I. L. Raskovskaya, and B. S. Rinkevicius, “Effect of Acousto-Optic Effect on Measurement Errors of the Vibrational Velocity of Particles by a Laser Doppler Anemometer,” Avtometriya, No. 5, 92–101 (2000).Google Scholar
- 4.V. S. Sobolev and Yu. A. Poleshchuk, “The Most Plausible Estimates of the Parameters of Optical Signals with Allowance for Shot Noise and Background Noise,” Komp’yuternaya Tekhnika, No. 30, 98–106 (2006).Google Scholar
- 6.A. I. Perov, Statistical Theory of Radio Engineering Systems (Radiotekhnika, Moscow, 2003) [in Russian].Google Scholar
- 8.V. S. Sobolev and G. A. Kashcheeva, “Potential Accuracy of Methods of Laser Doppler Anemometry in the Single-Particle Scattering Mode,” Avtometriya 53 (3), 74–80 (2017) [Optoelectron., Instrum. Data Process. 52 (6), 264–270 (2017)].Google Scholar
- 9.V. A. Grechikhin, “Potential Accuracy for Estimating the Signal Modulation Index with Harmonic Frequency Modulation,” Radiotekhnika, No. 1, 29–35 (2009).Google Scholar