A technique for launching a spacecraft from a low-orbit platform to a geostationary orbit is presented. The efficiency of the proposed technique is assessed. When testing the technique, the additional mass of the docking unit and the approach control system is taken into account. The results obtained indicate a significant increase in the mass of the payload being launched and a decrease in the mass of the fuel consumed when using the presented technique.

A method for calculating the directivity coefficient of the Widrow adaptive antenna array under various signal- noise conditions is described. The proposed approach is used in energy calculations of a radio link based on a vector of weight coefficients. The results of computer modeling are presented, confirming the practical significance of the approach considered.

The experience of using geospatial data processing and visualization tools in developing evacuation route schemes within the framework of the Almaty — Safe City program is reviewed. The seismic activity of Almaty is analyzed and the need to implement advanced methods for improving population safety is substantiated. Preprocessing and verification of source data, geocoding using the Python programming language and the GeoPy library for converting text addresses into geographic coordinates are considered. Combined algorithms for calculating optimal routes, methods for optimizing the export of layouts using the QGIS geographic information system, taking into account the topographic and infrastructural features of the city, are used. The automation of layout creation is carried out using the Atlas tool. Layouts of information signs with text and graphic information are developed to facilitate navigation and evacuation of the population. The effectiveness of the developed routes is confirmed in real conditions during the earthquake in January 2024, which demonstrates the practical significance of the research and implemented solutions.

Calculation of a digital tracking system (DTS) with the use of approximate compensation of the poles of the system continuous part (CP) lying in the stability region by the filter zeros of the its discrete part is considered. Unlimited increase in the compensation accuracy with decreasing sampling period theoretically allows making the linearized DTS model invariant with compensation of only the speed error. The simulation model of the DTS constructed in the MatLab Simulink system allows reducing its calculation to the selection of the CP conversion coefficient, sampling period, and parameter of the astatic discrete low-pass filter in the feedforward circuit based on the differences in the reference action.