Kolobrodov V.G.

This paper investigates ways to increase the efficiency of coherent optical spectrum analyzers (COSA). The increase in efficiency is achieved through usage of space-time discrete light modulator in the COSA input and through recording of the spatial spectrum with a matrix detector (MD). The matching of the parameters of the modulator, Fourier lens and MD allowed to improve the technical characteristics of COSA. The matching means the choice of parameters of COSA’s components, which allow to obtain improved characteristics of the COSA.

A new model of information transformations was developed for remote thermal imaging from an aircraft or space vehicle. This model takes into account characteristics of background, targets, the optical system and the matrix detector, which allows us to explore ways to improve the technical characteristics of the system’s main blocks. The computational algorithms are based on spatial-frequency filtering in the signal propagation paths and allow performing the tasks of analysis and synthesis of systems with or without visual perception. The model is compatible with the current NATO standards.

As a result of comprehensive research on the intersection of two disciplines - opto-electronic engineering and medicine there was developed new computational methods of infrared evaluation of the biological object in a pathological area of the body, taking into account the temperature regulation of processes, which allows to determine the temperature distribution in the muscle tissue and the depth of the location of the areas of hypothermia.

There were created new computational methods of objective assessment of the spatial and energy resolution of space-based infrared cameras on the basis of physical and mathematical model of electro-optical system for forming and converting signals from terrestrial objects and backgrounds to the final information package of thermal imaging system.

The mathematical model of informative environment is developed for the exposure of thermal anomalies in a current situation. The original image fusion methods were developed for two channel optoelectronic systems of supervision (OESS) at the sensors level and on the base of information map, which provides higher detect probability of thermal anomalies after their relevant features. The criterion of information fusion efficiency is developed for multispectral OESS on the base of the targeting task performance.

The project is dedicated to current importance direction of instrument-making industry - the increasing of complex efficiency of infrared (IR) optoelectronic reconnaissance systems (OERS).

The prosecution of project consisted of three harmonized function boxes:

- mathematical modeling of information transformation in IR OERS, search of major links of the system, researches of the informative system behaviour under various conditions and at different influences;

We solve the scientific problem of developing the theoretical foundations of designing diffractive optical elements and systems based on them. Based on the research results are as follows:
An approximate equation of Fresnel diffraction, which is used in the design of optical systems based on diffraction theory.