Application of direct optical heterodyning methods for studying the processes of chondrite targets destruction by laser radiation

Gorbashova, M; Burdonskiy, I.N.; Gubskiy, K. L.; Kuznetsov, A. P.; Ramazanov, A. K.; Lukyanov, K. S.; Leonov, A. F.; Makarov, K. N.; Timofeyev, Ilya; Yufa, V. N.

doi:10.1088/1742-6596/941/1/012002

Cited by 6 publications

(2 citation statements)

References 2 publications

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“…Записанные сигналы обрабатывались с помощью стандартного алгоритма PDV, описанного в работе [9]. Пример зависимости скорости объекта от времени для сигнала, зарегистрированного интерферометром, представлен на рис.…”

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Метод Обработки Сигналов Трехфазного PDV, Устраняющий Влияние Ускорения На Точность Определения Скорости

Казиева,

Тищенко,

Решетов

et al. 2021

Письма В Журнал Технической Физики

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The interference method for determining the speed of objects using direct optical heterodyning (PDV-Photonic Doppler Velocimetry) has become widespread due to the simplicity of setting up the fiber-optic system, the unambiguousness of the results, and wide possibilities for varying the measurement accuracy and temporal resolution. The accuracy of speed measurement can be fractions of a percent, but there are a number of factors that prevent this. For example, a change in the speed of an object, that is, its movement with acceleration, leads to a broadening of the signal spectrum with an increase in the working time window and, as a consequence, to a decrease, rather than an increase in the accuracy of speed measurement. In this paper, we propose a method to compensate for the effect of acceleration on the accuracy of speed measurement. The proposed model for processing the registered signals makes it possible to determine both the acceleration and the speed of the object. The applied algorithm made it possible to avoid spectrum broadening with an increase in the time window and to increase the accuracy of measuring the speed of a freely falling body by an order of magnitude.

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Метод Обработки Сигналов Трехфазного PDV, Устраняющий Влияние Ускорения На Точность Определения Скорости

Казиева,

Тищенко,

Решетов

et al. 2021

Письма В Журнал Технической Физики

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“…Разработанная система реализована по методике PDV (Photonic Doppler Velocimetry), основанной на прямом оптическом гетеродинировании с прямым преобразованием доплеровских сигналов. Преимуществами данной методики являются помехозащищенность, высокая точность и простота в реализации [4].…”

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Применение Метода Прямого Оптического Гетеродинирования Для Измерения Твердости Методом Либа

Казиева¹,

Губский²,

Кузнецов³

et al. 2019

Письма В Журнал Технической Физики

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This paper describes a portable laser interferometry system for measuring the speed of an indenter in Leeb hardness testers. The system is based on Photonic Doppler Velocimetry method. The radiation source is a semiconductor laser with a wavelength of 1550 nm. The presented experimental results confirm the ability of the system to measure indenter velocities with an uncertainty of 0.001 m / s, which meets the requirements of the standard.

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Laser rock-breaking mechanism considering rock inhomogeneity and the temperature effect

Ma,

Zhang,

et al. 2025

Computers and Geotechnics

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Application of direct optical heterodyning methods for studying the processes of chondrite targets destruction by laser radiation

Cited by 6 publications

References 2 publications

Метод Обработки Сигналов Трехфазного PDV, Устраняющий Влияние Ускорения На Точность Определения Скорости

Метод Обработки Сигналов Трехфазного PDV, Устраняющий Влияние Ускорения На Точность Определения Скорости

Применение Метода Прямого Оптического Гетеродинирования Для Измерения Твердости Методом Либа

Laser rock-breaking mechanism considering rock inhomogeneity and the temperature effect

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