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15.248  Articles
1 of 1.526 pages  |  10  records  |  more records»
The main rotor rotation leads to the emergence the parametric system “standard antenna – body a helicopter”, in which outer radio interference and signal acquire spectral distortions. The features of new components of the signal spectrum and noises are id... see more

Established that, directivity diagram of the system of “basic antenna – fuselage of helicopter” becomes a function of the time due to the presence of the metal main screw, which during rotation, periodically changes geometry of aircraft body. In this case... see more

The system’s of air signals reliability calculating method is based on robust criterion of system failure; criterion takes into account the physical processes of degradation of system during its operation the normalization subajustment next time (duration... see more

It is shown that the system “standard non-directional antenna – metal body helicopter” during rotation of main screw is parametric. In this case, the parameter antenna system is effective length. The result of periodic changing its values is distortions s... see more

The method of automated modulation type recognition and determination of signal parameters by radiomonitoring facilities is offered in the article. The method establishes an procedure of application of the approaches to the definition of signal analytic r... see more

A new screening technique for obstructive sleep apnea (OSA) is implemented. This technique is based on finding the statistical signal characterization (SSC) parameters of the spectrum of pre-processed R-R-interval (RRI) data. A single classification facto... see more

Information-theoretic inequalities play a fundamental role in numerous scientific and technological areas (e.g., estimation and communication theories, signal and information processing, quantum physics, …) as they generally express the impossibility to h... see more

The subject matter of the article is an electromyographic signal transducer, which are an integral part of devices for adaptive electrical stimulation of muscle structures based on reverse electromyographic communication. The goal of the work is to study ... see more

Optical parametric oscillator (OPO) tunable in the range 970-1460 nm has been developed using bet barium borate (BBO) crystal as the gain medium and second harmonic of Nd:YAG laser as pump source. Two sets of resonators were used to cover the range; first... see more

1 of 1.526 pages  |  10  records  |  more records»