Construction of adaptive spectral analyzers on the basis of acousto-optic spectrometers

Fadeyev, A. V.; Пожар, В. Э.

doi:10.1364/jot.80.000444

Cited by 5 publications

(2 citation statements)

References 15 publications

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“…This makes it possible to drastically reduce the registration time required to perform the task of distinguishing (recognizing) data. The reduction is the ratio of the total number of recorded spectral channels of the device to the number of informative channels (N gen /N inf ) and can reach 2-x for typical AO filters by orders [8]. This approach is especially effective in the analysis of line spectra with a high degree of sparseness (sparse spectra), which is typical, for example, for gas analysis problems [9,10].…”

Section: Introductionmentioning

confidence: 99%

“…Some modern AO filters implement new functions, such as spectral window width control or spectral filtering multiwindow mode [13], which could also be used to increase contrast, but these possibilities are not considered in this work. The idea of selective spectral registration, also called fragmentary spectral registration [10], is described in general terms [14] and was analyzed either under special assumptions [12] , or without registration of spatial distributions in the papers [8,10]. Thus, it is of interest to determine the approach to the optimal choice of a limited number of zones (lines) for recording the spectra of various objects for problems of contrast " visualization" of objects against various backgrounds.…”

Section: Introductionmentioning

confidence: 99%

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Formation of contrast images of specified objects by acousto-optic hyperspectrometer by selective spectral registration

V.V.

E.A.

V.E.

et al. 2022

Optics and Spectroscopy

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The method of selecting the most informative spectral channels when using an acousto-optic hyperspectrometer in the mode of selective spectral registration is presented. The developed technique makes it possible to select spectral channels in which the maximum contrast of objects is observed against a certain background, provided that their spectral properties are known. The results of experimental studies of the technique confirm an increase in contrast compared with panchromatic and hyperspectral shooting modes in the entire optical range. The choice of spectral channels according to the presented technique can also be used both for the formation of transmission functions in a multi-window acousto-optic hyperspectrometer, and for the rapid formation of their high-contrast color-synthesized images. Keywords: hyperspectral images, spectral contrast, visualization, acousto-optical filter, spectral density of energy brightness.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Formation of contrast images of specified objects by acousto-optic hyperspectrometer by selective spectral registration

V.V.

E.A.

V.E.

et al. 2022

Optics and Spectroscopy

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Hyperspectral monitoring AOTF-based apparatus

Пожар¹,

Gaponov

Мачихин

et al. 2019

J. Phys.: Conf. Ser.

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The apparatus for hyperspectral imaging in visible range is described. The rugged and compact design makes it suitable for unmanned aerial vehicles. The system is capable both for recording the entire spectral-spatial data (“hypercube”) and for selective grabbing the spectral images at characteristic wavelengths. This selective mode provides real-time extracting the most valuable information from the monitoring scene and reduces requirements for operation speed and data storage capacity of processing subsystem. The technical characteristics and basic features of the hyperspectral apparatus are presented and discussed.

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Technical implementation of acousto-optical instruments: basic types

Пожар

Булатов

Мачихин

et al. 2019

J. Phys.: Conf. Ser.

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The comparative analysis of the basic characteristics of acousto-optical instruments of different levels of integration and complexity: functional elements, devices and systems. The basic characteristics and their interrelations are determined. It is shown that each class requires individual approach to design. We indicate a novel trend of development of special class of instruments – modules, which are easy-to-integrate into existant devices or systems extending their functionality. The principle requirements for this kind of instruments are their connectivity with the device in each channel, port, protocol, so that the module adding and removing need not the device retuning or adjustment. This tendency has universal nature. The presented analysis is convinient for prognosing prospects and basic directions of acousto-optical instruments development.

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Construction of adaptive spectral analyzers on the basis of acousto-optic spectrometers

Cited by 5 publications

References 15 publications

Formation of contrast images of specified objects by acousto-optic hyperspectrometer by selective spectral registration

Formation of contrast images of specified objects by acousto-optic hyperspectrometer by selective spectral registration

Hyperspectral monitoring AOTF-based apparatus

Technical implementation of acousto-optical instruments: basic types

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