Propagation characteristic of laser-generated visco-elastic Rayleigh-like waves in stratified half-space

Han, Qingbang; Shen, J. G.; Jiang, Xue; Yin, Cheng; Jia, Jing; Zhu, Chang Ping

doi:10.1186/s13638-016-0599-z

Cited by 4 publications

(2 citation statements)

References 25 publications

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“…Laser information measuring systems (LIMS) due to the fact that the photodetector converts the amplitude modulation of the radio signal into a video signal, have either a wide range of information signals, or any spectrum of the parameter is measured. Therefore, due to the bad compatibility and filtering of signals, there is an interdependence between these channels [1,2].…”

Section: Introductionmentioning

confidence: 99%

Formation Analysis of Multi-Frequency Signals of Laser Information Measuring System

Herasimov

Tymochko

Коломійцев

et al. 2019

EUREKA: Physics and Engineering

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Improving the accuracy of measuring motion parameters and the volume of information exchange with aircraft requires the modern development of multifunctional radio systems that allow the combination of information and measuring channels due to frequency (time) signal selection. However, radio systems have limitations on the number and accuracy of the measurement of aircraft motion parameters, as well as information transfer rates. These restrictions will make it possible to remove laser systems for measuring with high accuracy the parameters of motion of aircraft. Similar laser systems are widely used in transmitting information to stationary or quasi-stationary objects. As a result, there was a need to overcome the contradiction between the requirements for the technical characteristics of radio systems and the capabilities of the existing scientific and methodological apparatus for synthesizing the signals of laser information-measuring systems for monitoring the parameters of aircraft motion. The theoretical foundations of the formation and selection of laser signals for combining the information and measuring channels of laser information-measuring systems are proposed and investigated. A comparison is made with known methods of combining (combining) the information and measuring channels of radio engineering systems and the features of using a spectrum of laser radiation formed by pairs of longitudinal modes that “color” each channel signal for their selection at reception. When receiving optical pairs of longitudinal modes, the intermode beat frequencies turn into radio engineering subcarriers that are well filtered and selectable. Based on the results of mathematical modeling and combinations of longitudinal modes, the choice of elements of a modified selector of longitudinal modes of laser information-measuring systems is substantiated. This determines the importance and usefulness of work for applied systems for measuring the parameters of movement of aircraft.

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Section: Introductionmentioning

confidence: 99%

Formation Analysis of Multi-Frequency Signals of Laser Information Measuring System

Herasimov

Tymochko

Коломійцев

et al. 2019

EUREKA: Physics and Engineering

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“…Аналіз останніх досліджень і публікацій. Необхідність контролю технічного стану озброєння і військової техніки (ОВТ) при переході на експлуатацію за технічним станом доведена у працях [2][3][4][5][6][7][8][9]. Аналіз даних джерел свідчить, що в них не розглянуто питання визначення поточного стану ОВТ одноразового застосування та техніки, яка відпрацювала встановлені терміни експлуатації, до якої віднесені КАЗУ.…”

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Application of the Principle of Relation to Choose the Technical Operation Program of Guided Air Weapons at Transition to Operation According to Technical Condition

Baranik¹,

Berezanskii²,

Datsenko³

et al. 2020

CSWNANGU

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The article presents the current state of the available stock of guided air weapons and the problem of transition of guided air weapons to operation according to technical condition. The transfer of guided air weapons to operation according to technical condition involves increasing the role of measurement operations and control of their parameters and characteristics. This will determine the actual technical condition and make informed decisions about further operation. In general, the effective-ness of control a technical condition of aviation missiles significantly affects the readiness for use of aviation equipment and the combat capabilities of this equipment in performance of the tasks. The exciting control model and methods for selecting parameters of technical condition is universal in relation to the variants of construction of the technical maintenance program a guided air weapons allows to conduct research into these indicators. However, this program does not indicate the plural of variant that should be selected if the undetermined influence of different nature factors to carry out a set of maintenance and repair work for guided air weapons. The possibility of using the principle of correlation, when choosing the program of technical operation a guid-ed air weapons during the transition to operation according to technical condition. With the help of the correlation principle, an approach to the choice of the program of technical operation a guided air weapons can be developed in case of unknown infor-mation about the mechanisms of influence of various internal and external factors on the properties of the guided air weapons, their effect on the technical condition and features of the units of aviation guided missile that are not amenable to instrumental con-trol. To implement the control of guided air weapons with using a principle of correlation need to use the results of practical appli-cations of aviation guided missile, including other types of fire tests, sample tests using the physico-chemical analysis of powder and explosive charges.

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Rayleigh waves in viscoelastic piezoelectric half-space with cladding structures: An analytic Legendre-Laguerre polynomial method

Chen,

Yu,

Elmaimouni

et al. 2024

European Journal of Mechanics - A/Solids

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Propagation characteristic of laser-generated visco-elastic Rayleigh-like waves in stratified half-space

Cited by 4 publications

References 25 publications

Formation Analysis of Multi-Frequency Signals of Laser Information Measuring System

Formation Analysis of Multi-Frequency Signals of Laser Information Measuring System

Application of the Principle of Relation to Choose the Technical Operation Program of Guided Air Weapons at Transition to Operation According to Technical Condition

Rayleigh waves in viscoelastic piezoelectric half-space with cladding structures: An analytic Legendre-Laguerre polynomial method

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