The questions of mathematical interpretation of results of trajectory measurements are discussed in terms of increasing the accuracy of identification of bearings of unmanned aerial vehicles during their movement in a "swarm" - a group. Variants of identification of horizontal and spatial bearings are offered. For each of the variants, criteria are proposed for identifying the belonging of the measured values ​​to the same object in the group and the conditions for achieving them. The situation of false positives is shown. It is determined that additional identification measures are needed to eliminate false bearing triads and uncovered ambiguities, including the use of combinatorial exhaustive search algorithms. For their study, it is necessary to develop an experimental statistical model with an algorithmic description of cause-effect relationships, which is a further development of this work.

Keywords: " unmanned aerial vehicle, group of objects, bearing identification, horizontal bearing, spatial bearing, identification criteria, false notch"

The paper presents a method for forming exact self-similar solution of the problem of calculating the compliant hydrodynamic journal bearing of finite length, running on layered lubricant in the axial lubrication. On the basis of the equations of motion of a viscous incompressible fluid, continuity equation and Lame equations for the case of a "thin layer" found the velocity and pressure, analytical expressions for the components of the supporting forces, the forces of friction and resistance forces axial movement of the lubricant. The analytical expressions for the value of the lubricant in the axial direction. The estimation of the parameters characterizing the ratio of the viscous layer adapted profile and the deformation of the elastic layer on the basic performance of the bearing. Established the most rational of the bearing capacity, the force of friction and lubricant consumption values ​​of these parameters.

Keywords: radial bearing, load bearing capacity, stratified flow

In this paper, based on the Navier-Stokes equations in the case of a "thin layer" is a method of forming an exact self-similar solution of the problem of calculating the hydrodynamic thrust bearing with the adapted profile of the supporting surface, running on a two-layer lubrication, c considering the viscosity of lubricating fluid temperature. Found the velocity and pressure in the lubricating layers and using the expression for the rate of energy dissipation analytical expressions for the viscosity of the lubricating layer. The estimation of the influence of parameters characterizing the adapted profile of the bearing surface of the bearing, and temperature parameters, viscous layers of relationships and their length on the basic performance of bearings operating on stratified lubricants. The optimal values ​​for these parameters to ensure the rational, for bearing capacity and strength of friction operation under consideration thrust bearing.

Keywords: Adapted profile, stratified flow, load-bearing capacity, the friction force, the Couette flow

This paper presents method of calculation of angular power spectra and signal to noise plus interferences ratio in presence of active antenna element mutual coupling.

Keywords: Active antenna array, Rx-Tx antenna module, spatial structure, mutual coupling, nonlinear distortion