Analytical Approach to the Design of Joint Motion Control of the Egratic System " Skipper-Ship"

The article deals with the problem of designing a joint control of the movement of a water transport object — the ergatic system " ship-to-ship" . Joint motion control is presented in mathematical form on the basis of the model of actions and responses of the human operator and the machine, adopted in engineering psychology for the " human-machine" systems. The model is formalized by composing mathematical models of the plane motion of the ship and the movements of the controls of the propellers (propellers) and rudders of the ship. For the ship’s human-machine interface, it is proposed to use a new type of apparatus, with the help of which the control actions on the control body from the boatmaster and the control automaton of the ergatic system are combined.For the mathematical description of virtual signals of discrete control in solving problems of target designation and planning, a method for constructing a set of incomplete representations of elementary movements in the state space of the " skipper-ship" system is proposed. The numerical estimates of pairwise different representations of elementary movements and discrete control signals that implement transitions from one elementary movement to another by influencing the propellers and rudders of the ship using the ship’s human-machine interface controls are obtained.In order to unify the anthropomorphic control of ship movement at the target designation and planning levels, it is proposed to use templates from several discrete control signals, based on the experience of navigation and solving mathematical programming problems. The solution of the practical problem of optimal anthropomorphic control of the vessel movement from the mooring wall to the lock chamber is obtained, which provides for the implementation of a sequence of ten discrete control signals and two control templates. A method is proposed for estimating the influence of signal, parametric, and coordinate uncertainties on the position of the image point in the state space of the " su-driver-ship" system relative to the nominal trajectory of the program motion. The regions of interval representations of uncertainties in the subspace of the ship’s " time-position-speed" states are obtained. The procedure for correcting the a priori description of nominal anthropomorphic control is considered on the basis of control patterns and analysis of rectangles of uncertainty in the subspace of states of the " skipper-ship" system.

Strategic framework for the development of the marine space exploration and targeting

The relevance of the task of improving the system of marine space reconnaissance and target guidance (ICRC), which involves conducting reconnaissance, processing target designation data and issuing them for the use of naval missile weapons (RV), is closely related to the effectiveness of the combat use (BP) of high-precision weapons (WCO) of sea-based (MB) and BRAV. The development of the system and the creation of new ICRC systems for ships of the Russian Navy are aimed primarily at ensuring the combat use of missile weapons (RO).

Method and algorithm for determining the geographic coordinates of ground objects from an unmanned aerial vehicle

Introduction: As practice shows, the accuracy of determining the coordinates of objects is influenced by many factors associated with the presence of errors in measuring the angular coordinates of the optical system, the distance to the object and the presence of an inhomogeneous terrain. Purpose: Improving the accuracy of determining the geographic coordinates of ground objects from an unmanned aerial vehicle. Results: A method and an algorithm for determining geographic coordinates based on the use of a digital terrain model and optimization methods have been developed. The accuracy of calculating the coordinates of the object is increased by minimizing the error in measuring the declination angle, azimuth to the target and slant range. To confirm the analytical calculations, a field experiment was carried out with a car on the ground. At a considerable distance, at which the slant range was 900 m, several data freeze frames were taken. As a result of calculations, the geographical coordinates of the car were obtained in two ways (traditional and developed). Ultimately, the accuracy of calculating coordinates using the developed method is 4.8 times higher. Practical relevance: The method and algorithms for information processing proposed in the work will make it possible to create a number of hardware and software solutions for guidance and target designation systems.

A private model for determining the efficiency of target distribution

A specific model has been developed to assess the performance indicators of target designation when setting obstacles by the enemy and maneuvering various targets. On the basis of the adopted technical characteristics and parameters of stations and weapon systems, optimal target designation options were found. Favorable conditions for firing rockets have also been determined. The indicator of the increase in the average number of destroyed targets is calculated when moving from one type of target placement to another. The course of solving a specific model is presented. Analytical expressions for calculating target indicators of placement efficiency and graphic material are given.

Dependence between the accuracy of target designation to an onboard missile radar station and errors related to determination of the target and missile coordinates by a ground radar system

This article investigates the dependence between the accuracy of target designation issued by a ground radar system to an onboard radar station based on the measured target and missile coordinates and on the relative missile position (relative to the radar and the target). Simulation and calculation methods are proposed for estimating the accuracy of target designation in terms of the observation angle and the range and speed of the target taking into account both the errors in measuring the target and missile coordinates by a ground radar system and the relative position of the missile. The influence of the errors in measuring the target and missile coordinates and the relative position of the missile on the target designation accuracy is investigated. The problem of tracing the optimal trajectory of missile guidance to the target is formulated taking into account the errors of target designation to an onboard radar station and other factors.

The role of the target designation attribute in the legalization of unauthorized construction

The article demonstrates the current problems of the institution of unauthorized construction, related to the procedure for acquiring ownership of unauthorized buildings, and the place of the criterion for the purpose of construction when applying the procedure for legitimizing an unauthorized object. The author suggests the introduction of a norm that ensures the differentiation of objects of unauthorized construction on the basis of the criterion of their purpose, which will bring some stability in the turnover of real estate objects.

Monostatic RCS of Rectangular Patch Antenna in C-Band

RCS is very significant to confirm data for target designation. The targets signature is different, because every target has own signature, and this specific signature is utilized to recognize the type of structure which will be tested. The monostatic radar utilizes one antenna on the body for reducing the scattering of signals for given polarization and receive and transmit in this type in the same location. Microstrip patch antenna is widely used in microwave systems, especially for space applications. In this paper, rectangular microstrip antenna in c-band frequency is designed and simulated as a target to calculate monostatic RCS area using CST software 2019. The strip antenna is simulated and modeled for different target angles (0, 45, 60and 90) degree. The monostatic radar cross section is simulated at 8GHz with incident angles from 0-180 degree. The best RCS of rectangular patch antenna is about -31m2 at the incident angle θ=60o.

Algorithms for semiautomatic control of hand prostheses

Algorithms and block diagrams for control of automated hand prostheses are proposed. The hand prosthesis is considered as a manipulative robotic system equipped with a target designation device for the position of an object, among others, position sensors and a microcontroller. In this case, the transference movements of the hand-prosthesis are carried out in automatic mode, while the orienting movements of the hand in the tracking mode — with the help of the movement of the foot, from the setting device located in the shoe. Keywords hand prosthesis; semi-automatic control; algorithm