SCIENCE & EDUCATION

The purpose and the main conclusions of developed information system were briefly described in this article. The main part of the article contains algorithms and implementations of information system's basic functions, such as diagnosis, processing and analysis of psychological and pedagogical information about pupils’ educatioanls outcomes.

Today in the modern systems of automative flight control attention is paid to computation of 4D-trajectory for aircrafts based on flight data, it’s wroth mentioning that increasing the reliability of this computation is an urgent problem because the results of this computing are used for information distribution between flight dispatchers and for determining the load of flight space control sectors and other elements of flight space. This article was devoted to one of the main stages of computing 4D-trajectories for aircrafts - flight at FL considering the wind.

Radar station created in BMSTU (RDE RET) that allows to get the images of low-orbit spacecrafts and working in the millimeter-wave band was considered in this article. Created radar station is an interesting researching tool, allowing to breakthrough in the sphere of creating algorithms and methods for taking radar pictures of aircrafts and their high-accuracy detection; it also provides tools for research of millimeter-wave propagation at the Earth-Space path.   

High-accuracy algorithm for wind speed supplement computation when determining the entire speed of aircraft flight sector was considered. Proposed algorithm used in 4D planning and organizing of aircraft flight along the straight trajectory segment. It provides more precise computation of aircraft arrival time, and also gives a precise estimation of fuel amount needed for the flight.

This article is devoted to the teaching method of «Management in technical systems» (MTS) in the sphere of designing and creating of cutting machines and industrial robots and to the development of examples for control system (CS) of numeric control machine tools (NC), these examples were presented in the lectures. Teaching method of MTS course at Cutting machines department was considered; generalized block diagram of executive devices’ follower drives was presented; the most difficult problems for students were considered.

Principles of creating the distance-azimuthal radar pictures of targets in radars with inverse aperture synthesis, based on classic spectral analysis. Algorithm for localizing data processing when monitoring aircraft moving along the straight-line trajectory was developed. The results of distance-azimuthal radar picture simulation based on facet model and point model were presented in the article.

This article is devoted to the method for increasing of radar energy efficiency at the expense of using the pulse envelope with non-rectangle form. Construction schemes of solid-state pulse transmitting radar devices were presented; they provide forming of  pulse envelope with non-rectangle form, keeping high energy efficiency. The aspects of thermal conditions and the problems of output cascade reliability were considered. The analysis of energy saved during the radar operation with different types of radio signals was presented.

Development of mathematical model of multiposition radar system's channel of distribution was described in the article. The probing radio-signal propagation, their scattering at different objects, such as targets and clutter and reflection from underlying surface were taken in the account. The first results of multiposition radar system with meter-wave band simulation were included in this article.

Approach to the design of solid-state transmitting devices with high unti power, based on continuous optimization of transmission path’s units in order to achieve the maximum possible mass-dimensional attributes, was considered in this article.Ability to increas pulse power from one semicondactor device was demonstrated. The results of experimental research of very high frequency amplifiers were presented.

Principles of internal combustion engine's coolant temperature real-time monitoring. Computional system at hardware level was based on a single-board computer “Tion-Pro v2”. The application domain is the internal combustion engine's coolant temperature monitoring. With slight reconfiguration number of system abilities could be increased, for example using additional detectors or control relays.

The results of gravy-seismic monitoring, microseisms computer simulation, causes of large-span buildings’ differential settlement identification, lack of construction project’s geodynamic stability in real geologic conditions of modern industrial parks and metropolises. Computation of additional extra construction stresses of turbine wheel housing could be carried out as a result of geodeformational displays of vibro-seismic processes. Potential threat to the implementation of risks can be expressed in terms of the residual energy of the nonlinear damping of vibro-seismic wave processes and adequate intensity equivalent of seismic hazard on a scale of Mercalli or Richter.

Basic materials of research works in the sphere of detecting, classification, interpretation and verification of spectral rules of seismic activity global oscillation on the Earth according to the formula of explored and unknown before cosmogeneous evolution of global oscilliation intensity of seismic gravity-dynamic processes.

Model describing generation and evolution of carrier traps in injection-modified multilayer nanosized dielectric films of MIS-structure in the mode of powerfield tunnel injection of electrons into dielectric with direct current. The parameters of model, which characterize the processes of charge state changing of MIS-structure with thermal film SiO2 passivated with the PSG layer and MIS-structure Si-SiO2 – polycrystalline silicon (Si-SiO2-Si*), in the conditions of controlled powerfield tunnel injection of electrons into dielectric. The comparison of experimental and simulation data was carried out.

This article deals with complex experimental research of electrophysical processes in liquid rocket engines. Subject for study of products of combustion flow process’ electrophysical characteristics is a model of liquid rocket engine, using ethanol as a fuel and gaseous oxygen as an oxidizing compound. Dependences of magnetic and electric intensity on LRE mode parameters were obtained. Resulting data could be used for the development of noncontact diagnostic system and disaster facilities of LRE in real time.

Generalized algorithms of data processing in radars with spacecraft tracking system were considered in this article. The stage-by-stage approach to data processing and algorithms for detecting and tracking of targets were considered by the example of radar system with millimeter-wave band, designed to take radar pictures of spacecrafts. The choice of probing signals for considered radar system was determined.

International standards’ role of providing the quality in the organization of industrial process at electronic industry was considered. Application of visual modeling for presentation and estimation of quality models’ components was described. The implementation of basic directions in the field of quality assurance was analyzed by the example of LG Company.

The article considers questions of creating digital stabilization systems for electrostatic suspensions of spherical vacuum-drive gyroscopes and floating-type pendulous accelerometer with regulation of high-voltage potentials on electrodes according to the PDM principle. The author gives recommendations regarding selection of regulator structures, sample rates and capacity of controllers for devices with hollow and solid rotors are given. As a result of calculations and simulation the author shows a possibility of applying discrete correction in suspensions of floating-type devices and vacuum suspensions of hollow rotors which have major diameters.

Studying aerodynamics of bodies which received irreversible deformations in the process of motion is an extremely urgent task today. The authors analyze the approaches used in studying flow around elongated bodies at high angles of attack. The authors provide a general formula for a body with constant curvature of direct axis. The authors give primary attention to the description of original experimental studies of flow near a curved body at supersonic speeds. The results of the visualization of flows and drainage studies are given. The authors justify the proposals on modifications of the Newton theory of flow and other theories for creating a method of calculating aerodynamic characteristics of random deformed bodies.

The article covers approaches to solving the problem of topology transformation of sub-micron GSI for a dual phototemplate technology. A defined class with many elementary methods is assigned for each topology element. Processing the elements consists in their sequential sorting, analysis of distances between the outlines of geometric primitives to meet the assigned criterion. If the distance between the outlines of geometric primitives does not meet the assigned criterion, separation of the analyzed primitives into two different layers of topology is performed. The authors consider an algorithm of coloring a graph for conducting a topology analysis to study the possibility of transformation for the dual phototemplate technology.

 This paper covers usage of open-ended frequency-shift keyed signals. The author provides justification of their use and considers the side-lobes structure of an indeterminacy body. The author describes an algorithm of signal accumulation and reception of range profile. The author proposes simulation of a signal reflected from the target and reception of a radio image on its basis by ISAR.