Vol. 61, No. 4, 2025

Optoelectronics, Instrumentation and Data Processing

ANALYSIS AND SYNTHESIS OF SIGNALS AND IMAGES

Study of Hyperspectral Characteristic Systems for Classification of Natural and Anthropogenic Objects

S. M. Borzov, E. S. Nezhevenko, S. I. Orlov, O. I. Potaturkin, and S. B. Uzilov p. 409 abstract

Methods of Spectral Matching of Heterogenous Remote Sensing Images

A. N. Borisov, V. V. Myasnikov, and V. V. Sergeev p. 422 abstract

Sunflower Seedling Counting and Weed Detection by Deep Learning on Unmanned Aerial Vehicle Captured RGB Images

I. A. Pestunov, R. A. Kalashnikov, N. V. Ovcharova, V. I. Belyaev, and M. M. Silantieva p. 430 abstract

Training Algorithm of Searching for Small-Sized Objects in an Image

A. V. Likhachev p. 441 abstract

Reconstruction of Optical Remote Sensing Images Using Synthetic Aperture Radar Data and Diffusion Neural Networks

V. F. Konovalov, V. V. Myasnikov, and V. V. Sergeev p. 449 abstract

Transducer Characteristic of Spacecraft Device for Local Vertical Construction with a Panoramic Annular Lens

V. A. Solomatin and D. G. Otkupman p. 458 abstract

CONTROL AND INFORMATIONAL-MEASURING SYSTEMS

Specific Features in the Use of Self-Referential Rotary Units in High-Precision Angle Measuring Systems

A. V. Kiryanov and V. P. Kiryanov p. 464 abstract

Improving the Accuracy of Measured Impedance of Electrochemical Current Sources Using Wavelet Analysis

E. S. Denisov, Yu. K. Evdokimov, O. V. Shindor, and K. V. Kon’kov p. 474 abstract

NUMERICAL SIMULATIONS IN PHYSICAL AND ENGINEERING RESEARCH

Modeling the Thermal and Mechanical Operation Modes of X-Ray Optical Elements for Ultrabright Synchrotron Radiation Beams from 4+ Generation Sources

P. S. Zavyalov, S. N. Makarov, A. P. Belousov, K. V. Zolotarev, A. D. Nikolenko, and V. V. Ovsyannik p. 481 abstract

OPTICAL-PHYSICAL METHODS OF RESEARCH AND MEASUREMENT

High-Resolution Spectrometer Based on Fiber Laser with Vibration-Induced Sweeping

E. K. Kashirina, I. A. Lobach, and S. I. Kablukov p. 493 abstract

High-Frequency Interrogator for FPI-Based Fiber Sensors

M. P. Gaskov, V. A. Simonov, V. S. Terentyev, and I. A. Lobach p. 501 abstract

Automation of Growth Rate Measurements for AlN/GaN Heteroepitaxial Structures with a Two-Dimensional Electron Gas Grown Using Ammonia Molecular Beam Epitaxy

I. N. Lyapustin, V. G. Mansurov, T. V. Malin, A. M. Gilinsky, Ya. E. Maidebura, V. I. Vdovin, Yu. A. Zhivodkov, and D. S. Milakhin p. 511 abstract

Optical Properties of the RbTiOPO\({}_{\mathbf{4}}\) Crystal in the Terahertz Range

A. A. Rybak, G. V. Lansky, V. D. Antsygin, Yu. M. Andreev, and N. A. Nikolaev p. 522 abstract

Temperature Dependence of Millimeter-Wave Dielectric Dispersion in SBN-75

A. A. Rybak, V. D. Antsygin, S. A. Kuznetsov, S. L. Mikerin, and N. A. Nikolaev p. 527 abstract

PHYSICAL FUNDAMENTALS OF MICRO- AND NANOTECHNOLOGIES AND OPTICAL ELECTRONICS

The Abnormally High Thermoelectric Response in Thin-Film Structures Based on Strontium-Barium Niobate