Autonomous navigation and attitude control of spacecraft's on near-earth circular orbits

Andronov, V. G.; Emelyanov, Sergey Gennadievitch

doi:10.5937/jaes16-16479

Cited by 3 publications

(2 citation statements)

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“…The sequence of acceptable robot states (C tree ) is a set of states с' С (СϵCA), which does not allow collisions with obstacle objects O in W and satisfi es the condition of contiguity of neighboring states with respect to coordinates [10], i.e. (1) (2) ∆ x , ∆ y -coordinate increment of adjacent cells. The goal of path planning is understood as the task of fi nding a confl ict-free path from free states of the external environment.…”

Section: Research Objectivementioning

confidence: 99%

“…The development of control systems for transport and aerospace robots is one of the critical directions for creating advanced robotic systems with artifi cial intelligence elements on board the machine [1,2]. This direction is determined by modern achievements of theoretical computer science, computer technology, theory of automatic control with using maps of the area (sea surface) and different high-tech production [3,4].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Modified method of a path planning on a local maps for transport and aerospace robots

Evgeny¹,

Sergey²,

Oleg³

et al. 2019

J Appl Eng Science

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In this paper we consider the modifi cation of the method of planning the A-star path for transport and aerospace robots. It is necessary to take into account obstacles in the local neighborhood of aerospace robot, but not suffi cient for the rational path planning. The essence of the modifi cation is to use additional information about the features of original cell array. This additional information is represented by binary fl ags. They represent obstacle-free rows and matrix columns. The modifi cation allows you to build paths that include straight sections of free cells. The main feature of this method is the use of bitwise logical operations on cell values.

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Section: Research Objectivementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modified method of a path planning on a local maps for transport and aerospace robots

Evgeny¹,

Sergey²,

Oleg³

et al. 2019

J Appl Eng Science

View full text Add to dashboard Cite

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Analytical evaluation of equivalent energy loss in causal frequency selection filters in the processing of quadrature amplitude modulation signals

Andronov

Mukhin

Babanin

et al. 2020

J. Phys.: Conf. Ser.

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In this paper, we consider the need to assess the influence of the parameters of a linear time-invariant causal system in the processing of quadrature amplitude modulation signals of various positionality and constellation diagram irregularity. We describe the equations that determine the energy balance of a radio line and the total losses arising in route. We have developed mathematical expressions to assess the equivalent energy losses caused by the irregularity of amplitude-frequency and phase-frequency characteristics of the frequency selection filters. We propose a procedure to assess the non-noise losses in the frequency selection filters when designing high-speed radio systems for transmitting the information.

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Methodology for Determining Deviations of Pilotless Aircraft from a Given Trajectory by Parallaxes of Underlying Surface Images

Andronov

Chuev

Yudin

2023

Proceedings of the SWSU

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Purpose of research. Development of a methodology for determining deviations of pilotless aircrafts from a given trajectory in conditions of signals loss from navigation satellites.Methods. The technique is based on functional relationship between deviation parameters of pilotless aircrafts from a given trajectory and changes in longitudinal and transverse parallaxes of overlapping images of the underlying surface due to these deviations. Mathematical description of computational procedures for deviation parameters determination used methods of functions approximation and mathematical processing of measurement results with accuracy estimation of obtained results.Results. A methodology that includes monitoring, assessing the level and determining the magnitude and direction of deviations of pilotless aircrafts from a given trajectory was developed. A system of nonlinear equations describing functional relationship between deviation parameters and changes in parallax of overlapping images of the underlying surface is obtained. Linearization, normalization and solutions of this system of equations by the least squares method were performed. Analytical relations were obtained for a posterior accuracy assessment of the obtained results.Conclusion. The technique provides parameters detection and determination of uncoordinated deviations of pilotless aircrafts from a given trajectory with an accuracy commensurate with satellite navigation methods. The proposed approach makes it possible to reduce the number of processed corresponding points in overlapping images and the dimension of the problem being solved in comparison with known methods. This significantly reduces the level of computational and resource costs, which is of great importance for the use of developed technique on the board of miniature pilotless aircrafts.

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Autonomous navigation and attitude control of spacecraft's on near-earth circular orbits

Cited by 3 publications

References 0 publications

Modified method of a path planning on a local maps for transport and aerospace robots

Modified method of a path planning on a local maps for transport and aerospace robots

Analytical evaluation of equivalent energy loss in causal frequency selection filters in the processing of quadrature amplitude modulation signals

Methodology for Determining Deviations of Pilotless Aircraft from a Given Trajectory by Parallaxes of Underlying Surface Images

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