Results 71 to 80 of about 5,398,686 (101)

Vibration amplitude determination from the spectrum of an autodyne signal of a semiconductor laser

SPIE Proceedings, 2003
A method of amplitude determination of mechanical vibrations from the spectrum of autodyne signal of semiconductor laser is described. The relation between the vibration amplitude of an object and the frequency of spectral component with the maximal amplitude in the spectrum of the autodyne signal is obtained. The least-squares method is used to obtain
Dimitry A. Mashkov, Anatoli V. Skripal, Dmitry A. Usanov   +2 more
openaire   +1 more source

Determining the cardiovascular pulse waveform using a semiconductor laser autodyne signal

Technical Physics Letters, 2013
It is shown that a semiconductor laser autodyne signal can be used to reconstruct the pulse waveform in the human radial artery. The pulse waveforms determined using the proposed autodyne system are compared to those obtained by an oscillographic technique using a pneumatic sensor at various pressures in the arm cuff.
D. A. Usanov, A. V. Skripal’, E. O. Kashchavtsev   +2 more
openaire   +1 more source

On principal impossibility of autosynchronization of an autodyne by radiation reflected from a moving target

Russian Physics Journal, 2007
V Ya Noskov, S M Smolskiy, Noskov V Ya
exaly   +2 more sources

Simulation of laser autodyne signals with fast-moving reflector

Achievements of Modern Radioelectronics
The simulation of the signals of laser autodyne sensors is performed in conditions of rapid movement of the reflector, when it is necessary to take into account an arbitrary ratio of the period of the autodyne signal and the delay time of the reflected radiation.
E.V. Bogatyrev, R.G. Galeev, K.A. Ignatkov, A.S. Luchinin, V.Ya. Noskov   +4 more
openaire   +1 more source

Autodyne interferometry of distance by injected current modulation of laser diode

Saratov Fall Meeting, 2019
Laser self-mixing interferometry of absolute distances is represented by the method of frequency modulation of supply current of the laser diode (FMCW technique).
D. Usanov, A. Skripal, S. Dobdin, A. V. Dzhafarov   +3 more
semanticscholar   +1 more source

Using the PLL Frequency Synthesizer System for Registration of the Autodyne Response of Microwave Oscillators

2026 IEEE Ural-Siberian Conference on Biomedical Engineering, Radioelectronics and Information Technology (USBEREIT)
A description of the principle of operation of an autodyne sensor (AS) stabilized by a phase-locked loop (PLL) frequency synthesizer system is presented. It is proposed to use the control voltage at the output of the PLL system’s phase frequency detector
O. Kuvshinov, Kirill Ignatkov, V. Noskov, I. A. Koshkarev, Ilya S. Vesnin   +4 more
semanticscholar   +1 more source

Signal and noise characteristics of autodyne radars in the millimeter range with simultaneous pulse and linear frequency modulation according to a symmetrical sawtooth law

Achievements of Modern Radioelectronics
Due to the simplicity of the design and low cost of the transceiver, autodyne short-range radar systems (ASRRS) have found wide application as security sensors, speed sensors and collision avoidance of vehicles, meters for the movement of wagons on ...
E. Bogatyrev, D. Vishnyakov, K. Ignatkov, O. Kuvshinov, V. Noskov   +4 more
semanticscholar   +1 more source

Effect of nonlinear frequency modulation on the formation of signal and noise characteristics of autodyne radars with simultaneous pulse and frequency modulation of radiation

Achievements of Modern Radioelectronics
Autodyne-type transceiver systems (or simply autodynes) are small-sized, reliable and technologically advanced devices that have found wide application in solving various tasks in transport, industry, scientific research and military affairs.
E. Bogatyrev, R. Galeev, K. Ignatkov, O. Kuvshinov, V. Noskov   +4 more
semanticscholar   +1 more source

Signal and noise parameters of autodynes with the soft impedance characteristic of the active element (review)

Infocommunications and Radio Technologies, 2018
The general expressions for an analysis of signal and fluctuation parameters and characteristics of an autodyne oscillator are obtained, which is under an influence of the proper reflected emission from a radar object. The oscillator model represented by a parallel connection of an oscillating system and an active element with the soft impedance ...
A Chupahin, S Smolskiy, D Mishin, K Ignatkov, V Noskov   +4 more
openaire   +1 more source

Influence of Resonators' Offsets on the Autodyne Characteristics of Stabilized Oscillators at the Strong Reflected Emission

International Conference on Actual Problems of Electron Devices Engineering, 2018
The numerical simulation of autodyne characteristics of a microwave oscillator with frequency stabilization by the additional high-Q cavity for various offset values of the stabilizing cavity with respect to autodyne oscillation frequency is performed ...
V. Noskov, K. Ignatkov, A. P. Chupahin
exaly   +2 more sources