There are obtained the analytical models for calculation of permittivity in the structures «dielectric substrate - multilayer nanocomposite ferroelectric film (MNFEF) » with metallic electrodes (planar arrangement on MNFEF surface and from the both sides of MNFEF), that are used for construction of electrically retuned devices with temperature-stable parameters. Temperature stabilization of effective MNFEF permittivity in the required temperature interval is provided by selection of layers quantity for their thickness and barium concentrations for each nanocomposite ferroelectric layer composed as Ba x Sr 1-x TiO 3 . MNFEF characteristics and parameters of variconds designed on their basis (planar multislot and in the form of sandwich-structure are studied. There are presented experimental characteristics of the reflector type phase-shifter with fine phase tuning, operating in W-band where as a tuning element ferroelectric capacitors with MNFEF are used.

Electromechanical devices consist mainly of rotor systems. Vibration is the result of the interaction of the elements of the rotor system and is largely determined by the accuracy of manufacturing elements at the production stage and defects arising in the process of operation. The main components of the rotor systems that affect vibration are bearings. To determine the technical condition of the bearings and the service life of the rotor system, it is necessary to accurately measure the unobservable vibrations of the rotor. The article describes the model of the channel for measuring the vibration of an electromechanical system, built using the apparatus of bond graphs. The transfer function is obtained by analyzing the signal flow graph. The systematic and random errors of vibration measurement are analyzed depending on the mass ratio between the system case and the vibration transducer for various sensor masses and attachment rigidity.

Most electromechanical devices contain planetary gears. Vibration is the result of the interaction of the teeth and is largely determined by the accuracy of the manufacture of their profile and the error of the step at the production stage, as well as the defects arising in the course of operation. The main elements influencing the vibration of the gears of the planetary gearbox are the deviation of the tooth profiles from the involute and the error in cutting the gear teeth. To reduce the dynamic loads in the contact areas and improve the reliability of gearing, these errors should be monitored and normalized in the allowable range. Based on the analysis of the elastic forces arising in the contact of the teeth, we obtain expressions for the contact stiffnesses and the forces forcing the vibration of the gears. Elastic forces are determined by identifying the deformations that occur at the contact of the gear and wheel teeth. The article describes an analytical description of the spectral composition of the forces that compel vibration, depending on the profile errors and the pitch of the gears of the planetary gear.

Elaboration of technological and environmental standards for development of high-tech electronic production systems is regulated by significantly changed environmental legislation. This article considers the basic principles, structure and methods of ensuring the competitive development of electronic production systems in conditions of their modernization and new construction by a regional-basin approach with using geo-information systems. The methodology for harmonization of standards, taking into account the ecological capacity and multidimensionality of natural-industrial complexes is proposed. This methodology is based on results of multi-years researches and criteria developed by authors determining for quotas distribution of permissible load within territorial-industrial complexes applying sector wide approach. The ranking of all major industries in natural production complex predetermined the need for harmonization of social and environmental requirements with production characteristics of developing industries and individual production complexes. To solve these tasks, the algorithm and methodology for harmonizing the two key blocks “technological” and “environmental” within territorial natural production complex is proposed. The harmonization criteria are defined, the algorithm for constructing a simulation model of territorial natural production complex and the structure of information software are developed.

Features of technology of modern production of radio-electronic means and requirements to models of management of technological processes according to features of production are defined. The role of sensitivity analysis in the development of control models is shown. Traditionally applied sensitivity indices and methods of their estimation are considered. The limitations of their application due to the large range of products, the variability of the production technology of radio-electronic means, the non-linearity of the dynamics of technological processes and the lack of statistical data are shown. An algorithm for calculating fuzzy sensitivity parameters using a family of Johnson distributions is proposed. The application of the algorithm is effective in conditions of uncertainty of technological processes’ dynamics, uncontrollability of disturbances and insufficiency of statistical data.

The role of metrology in the system of technical regulation and the scope of the federal law «On ensuring the uniformity of measurements» No. 102-FL in the forms of product conformity assessment forms, forms for confirming the compliance of measuring instruments with mandatory requirements and requirements performed on a voluntary basis are considered. The role of metrology is shown in the most important element of the technical regulation system – conformity assessment, due to the fact that in all its forms, proof of compliance with requirements is provided by objective methods, i.e. with the use of measuring instruments. At the same time, the measuring technique is a specific product, to which, besides technical, and in some cases first of all, metrological requirements are met, i.e. requirements for metrological characteristics of measuring instruments. The problems of unambiguous understanding and application of assessment forms and confirmation of compliance of measuring instruments with metrological and technical requirements, such as: verification, validation, calibration, introduced by international and national regulatory documents are discussed.

The article analyzes statistical characteristics of the ionospheric errors of pseudoranges on GLONASS positioning their variability in space and time and establishes space‑time equivalents. These characteristics are useful to solve problems such as the choice of the fixed ground‑based reference station type, the calculation of the working area of the reference station, the effectiveness evaluation of the differential mode using in the GLONASS receivers and in the study of other options for relative GNSS positioning. To obtain the statistical characteristics of the ionosphere influence on the GLONASS positioning accuracy were conducted, simulation modeling, in which the user was located on the Earth’s surface at a point with random coordinates. Moments of time and characteristics of solar activity were also chosen randomly from the intervals of their possible change. The positioning errors, the single and double differences of pseudoranges formed in a certain way were calculated. The results are presented in the form of probability distributions of ionospheric errors and their statistical characteristics – mean and standard deviation. Space‑time equivalents are determined.

The article discusses a variant of the all‑season and all‑weather complex for providing search and rescue operations conducted with the help of aircraft in the Arctic. The creation of such a complex is associated with the active development of the Arctic zones of the Russian Federation and the difficulties that are characteristic of these regions of the country: extreme climatic conditions, underdeveloped ground and aviation infrastructure, etc. A promising direction is the development of hardware‑software complexes of «improved vision», including various sensors: television and infrared cameras, radar stations, lidars. The article defines the main functional tasks for such complexes, analyzes foreign and domestic analogues of onboard complexes of information support for search and rescue operations. The absence of the complexes providing simultaneous solution of all the noted functional tasks was revealed, in connection with which a new onboard complex was proposed. In this work, the components of the proposed complex are considered: a laser‑television module, radar stations for forward vision and sensing of the underlying surface; methods of visualization of complex multi‑spectral images of the environment, as well as the formation of messages and signals about the danger are presented.

This article contains a new method for determining the location of sources of radio emission from the aircraft. Unlike the known methods in the new is using artificial neural network. The method is based on using Rumelhart perceptron, which represents a multilayer network of direct distribution. For the task was offered perceptron building structure and was determined input parameter set. Perception training was also carried out using the back propagation of error algorithm for selected multitude of teaching example. This article compares the new method with two already know. Analysis of new method shows that its accuracy characteristics are not worse than in the known methods. In some cases accuracy characteristics of the new method are even better. Than known methods of different values of SD for bearing measurement error. However, the new method requires a lot of computational efforts. This method can be realized only for the advanced aircrafts.

One of the promising areas for the use of aircraft‑type UAVs is to conduct search and rescue operations in the coastal zones of the regions of the Far North and the adjacent Arctic shelf. The paper briefly reviews optimization of trajectory parameters for search unmanned aerial vehicle (UAV) equipped with a position‑radar station. Modern search UAVs widely use electro‑optical detection devices for solving search problems, but their effectiveness significantly depends on weather conditions. One of the ways for escaping this challenge and increasing reconnaissance efficiency of UAVs is to replace electro‑optical devices with a synthetic aperture radar in stripmap mode. This paper proposes to optimize the trajectories of search UAVs equipped with synthetic aperture radar in stripmap mode in order to increase reconnaissance efficiency during rescue operations.