Results 71 to 80 of about 186 (97)

Main expressions for anaslysis of signals and noise of FM autodyne radar

2016 9th International Kharkiv Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves (MSMW), 2016
Main expressions for calculation and analysis of features of phase, frequency and amplitude characteristics as well as output response, which is registered in the power supply circuit of the autodyne oscillator with frequency modulation are obtained.
V. Ya. Noskov, K. A. Ignatkov, A. P. Chupahin, G. P. Ermak, A. S. Vasyliev   +4 more
openaire   +1 more source

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

Amplification of Autodyne Signals in a Bistable VCSEL by Vibrational Resonance

2018 International Conference Laser Optics (ICLO), 2018
It is experimentally demonstrated that vibration resonance in a vertical-cavity surface-emitting laser operating in the regime of polarization bistability can be used to increase the signal amplitudes in the autodyne detection of microvibrations of different surfaces.
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Signals from a moving object of autodyne radars with linear frequency modulation

2017 IEEE Microwaves, Radar and Remote Sensing Symposium (MRRS), 2017
Results of signal peculiarities' investigation of an autodyne short-range radar system with linear frequency modulation for the moving reflecting object are considered. The autodyne signal plots are obtained for the cases when its period duration is much longer than delay time of the reflected emission as well as for the cases when this inequality is ...
V.S. Kryzhanovskyi, G.P. Ermak, A.S. Vasiliev, A. V. Varavin, V. Ya. Noskov, K. A. Ignatkov, A. P. Chupahin, S. M. Smolskiy   +7 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

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

Influence of a Reflected Emission Level on Signal Formation in Autodynes with Oscillation Frequency Stabilization

2018 XIV International Scientific-Technical Conference on Actual Problems of Electronics Instrument Engineering (APEIE), 2018
Calculations and analysis of amplitude and frequency responses are performed for oscillators stabilized by the additional high-Q resonator. The distinguished features of the autodyne response formation are presented for weak and strong reflected emission from the radar target.
Vladislav Ya. Noskov, Kirill A. Ignatkov, Andrey P. Chupahin   +2 more
openaire   +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

Experimental and Theoretical Problems of Signal Processing at Vibro-Displacement Measurement by Autodyne Sensors

2007 17th International Crimean Conference - Microwave & Telecommunication Technology, 2007
Theoretical analysis is fulfilled for the algorithms and software formation for measuring signal processing and calculation of vibro-displacement parameters during the measurements using Doppler displacement measuring systems on the basis of the autodyne UHF sensors on centimeter range. The peculiarities of the registered signals are shown depending on
S. D. Votoropin, A. V. Kobyakov, V. P. Lushev   +2 more
openaire   +1 more source

AUTODYNE SIGNALS IN CASE OF RANDOM DELAY TIME OF THE REFLECTED RADIATION

Telecommunications and Radio Engineering, 2013
V. Ya. Noskov, K. A. Ignatkov
openaire   +1 more source