The Shannon entropy metric modified for solving the problem of estimating the information capabilities of adaptive radio engineering system in conditions of intrasystem uncertainty has been considered. The application of entropy approach was shown as a tool of the generalized representation of known criteria of adaptive signal processing during the intrasystem perturbations of system parametric vector.
Одесская государственная академия технического регулирования и качества, Одесса, Украина Background. The task of informative parameters of radio engineering signal measurement in the case of domination in target result error the component that generated by additive noises of an external environment of measurement is characteristic for many applications of radio engineering, monitoring of the environment, monitoring and technical diagnostics. The optimal solution of "weight's" minimization of the dominating error in mean squared sense as a result of measurement for the purpose of its approximation to the reference is considered. Objective. The aim of the paper is the application of preprocessing with the adaptive filtering of additive noises in the task of minimization of the dominating measurement error of informative parameters of "noisy" sampling of a radio engineering signal. Methods. Scientific novelty of work consists in modification of the form of the operator measurement's equation of information parameters considering specifics of procedure of bleaching. The problem of preprocessing of observed selection for automatic matching of measurement's procedure with input signal parameters and receiving the maximum number of information on an input of measuring instrument is solved. Efficiency of such preprocessing is estimated by information criterion which generalized measure is the modified entropy metrics according to Shannon. Results. Problem situations in informative parameters measurement tasks of a radio engineering signal against additive noises of arbitrary intensity are considered. Operator and algorithmic forms of the modified measurement equation of signal's information parameters, and also option of their implementation in the form of the device of the preprocessing with the adaptive filtering performed according to the diagram of the linear weight summing are provided. Efficiency of the adaptive filtering "noisy" sampling of a measuring signal is estimated and validity of operation of preprocessing which allows minimizing information losses on measurement instrument input is confirmed. Conclusions. Features of the measuring task solution are investigated and propositions on application of the preprocessing technology with the adaptive filtering additive noises of an external environment for minimization of "weight" of the dominating error in the result of measurement are formulated.
In the article, the authors conduct research on the problem of stabilization of dynamic parameters of an adaptive information-control system of a ground-based robotic complex in disturbed environment. The research concept is based on the latest trends in the development of third-generation robotics objects; on the definition of the robotic complex, as an autonomous substrate means of reproducing physical functions and automating the intellectual activity of a person in the process of active interaction of the component structures of the robotic complex with the environment; on the technology of integrating the ground-based robotic complex into the system of the highest level of hierarchy, in particular, in the system of providing or performing special tasks in the interests of the Armed Forces of Ukraine. The methodological preamble of the stated problems is being updated, the description of which occurs in relation to the model of substrate modification of the spatially distributed structure of the ground-based robotic complex. The purpose of the study is related to the application of methodological description to the problem of stabilization of the dynamic parameters of the adaptive control system of the mobile substrate structure of a ground-based robotics complex in a disturbed environment. Consequences of the presented description were announced, according to which stability is given priority as an integral-substrate property, which combines various types of stability of mobile spatially distributed structures of the ground robotic complex in time, and also characterizes their general structural and functional organization throughout operating time. The existence of the potential stability of the substrate structures of the ground-based robotic complex in cases of their resistance to the negative influence of external disturbances in time is confirmed. The absence of an inverse relationship was noted, that is, the component structures of the ground-based robotic complex that are resistant to external factors will not necessarily be stable. The target result was obtained in the context of the general scientific paradigm and can serve as an application for the concept of ensuring the effective functioning of mobile spatially distributed structures of the ground-based robotic complex in the integrated project "object-system".
Mobile structures of the ground-based robotic complex (RTC) are investigated as an active component formation of an integrated project “object-system”, which is operated in a destabilizing environment. The relevant problem of minimizing the influence of external destabilizing factors on the operation of mobile spatially-distributed structures of the ground-based RTC is stated in the descriptions of the conceptual apparatus of complex, poorly formalized multicomponent technical systems. Following the logic of this approach, the basic principles of distributed control are determined and their applications are implemented in the mobile structures of the ground-based RTC with elements of subsidiarity. The quintessence of the latter is represented by the technology of multi-antenna MIMO systems, which made it possible to determine the trade-offs of using classical transmission methods and strategies for receiving and processing MIMO signals in the multi-sensory channels of the information-control system (ICS) and radio communication with the data transmission system and commands. Given the complexity of performing the stated tasks, a set of technological functions of reducing the influence of destabilizing factors and their practical variations in the algorithms for obtaining the target result are proposed. A situational model of reducing (minimizing) information losses at the output of the information-control system of the ground-based robotic complex under destabilization has been built. Options have been proposed to achieve the target result: integration of structural and parametric adaptation methods, MIMO technologies, code division multiplexing techniques with CDMA channels, taking into account the heterogeneity factor of information exchange channels and the artificial redundancy of the system itself with respect to the number of external interference sources.
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