Analysis of the accuracy of autonomous navigation of the space robot in the diagnosis of the technical condition of an orbital object

Голяков, А. Д.; Фоминов, И. В.; Korolev, S. I.

doi:10.18287/2541-7533-2017-16-1-31-41

Cited by 2 publications

(3 citation statements)

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“…В соответствии с принятыми допущениями трансверсальная координата КР не наблюдаема по измерениям углов «звезда -ОО» [1]. Поэтому искомый расширенный вектор принимает вид…”

Section: оценивание систематической погрешности результатов измерений...unclassified

“…относительной радиальной скорости между ОО и КР. В связи с тем, что по измерениям D  трансверсальная координата не наблюдается [1], рассмотрим расширенный вектор вида…”

Section: оценивание систематической погрешности результатов измерений...unclassified

“…Измерения навигационных параметров, выполняемые бортовыми астрономическими и радиотехническими средствами космического робота (КР) при диагностике технического состояния орбитального объекта [1], содержат неизбежные погрешности, которые, в зависимости от характера проявления и причин возникновения, подразделяются на случайные и систематические. Эффективным способом борьбы со случайными погрешностями является статистическая обработка результатов бортовых измерений [2], в том числе с использованием адаптивных методов [3], позволяющая повысить точность решения навигационной задачи.…”

Section: Introductionunclassified

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Estimation of systematic errors in the results of navigational measurements with the use of spacecraft robot onboard facilities

Голяков

Ричняк

2018

VESTNIK of Samara University. Aerospace and Mechanical Engineer

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The article presents the results of an analytical study of the accuracy of estimating systematic optical errors of onboard navigation measurements that, along with the vector characterizing the motion of the center of mass of the space robot, are included in the vector of the parameters to be specified. The range to the orbital reference point, the relative speed of its motion and the angles between the directions to the orbital landmark and to the navigational stars, one of which is in the plane of the space robots orbit, and the direction to the second one coincides with the normal to this plane are chosen as the primary navigation parameters to be measured by the space robot onboard facilities. The conditions that make it possible to specify the augmented vector of the parameters to be determined are defined. Estimating the systematic errors of measurements we make assumptions about the central gravitational field of the Earth, the normal law of measurement errors with known variances and the constancy of the unknown systematic errors. Analytical expressions of the covariance matrices that make it possible to estimate the maximum achievable accuracy of solving the task depending on the kind of navigational measurements, variances of measurement errors and the number of measurements during a selected measuring interval are obtained. The presented results can be applied to justify the ways of improving the accuracy of the autonomous navigation of a space robot in diagnosing the technical condition of an orbital object.

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Section: оценивание систематической погрешности результатов измерений...unclassified

Section: Introductionunclassified

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Estimation of systematic errors in the results of navigational measurements with the use of spacecraft robot onboard facilities

Голяков

Ричняк

2018

VESTNIK of Samara University. Aerospace and Mechanical Engineer

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Analytical determination of motion parameters of the center of mass of an uncooperative orbiter on the basis of measurement information provided by on-board systems of a space robot in a coplanar orbit

Ananenko

Golyakov

Kalabin

2019

VESTNIK of Samara University. Aerospace and Mechanical Engineer

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An analytical solution to the problem of determining the parameters of motion of an orbiter’s center of mass is presented on the basis on the results of measurements carried out using the optical system of a space robot located in orbit coplanar to that of the orbiter. The “space robot-orbiter” line-of-sight angle and the line-of-sight rate in the moving orbital system of coordinates of the space robot are selected as initial parameters that are measured by the space robot’s on-board optical system. Along with the known orbital parameters of the space robot they are used to solve the problem of determining the parameters of motion of the orbiter’s center of mass. When solving this task, assumptions are introduced concerning the central gravitational field of the Earth, the coplanarity of the orbits of the space robot and of the orbiter, absence of influence of the atmosphere, the moon's attraction and the pressure of the solar wind on the motion of the space robot and of the orbiter, absence of errors in the results of measurements performed by the space robot’s on-board optics. Analytical expressions are obtained to determine the unknown parameters of motion of the orbiter’s center of mass. The results presented can be used to develop methods allowing standalone determination of parameters of the orbit of unknown orbiters using on-board optics of a space robot.

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Analysis of the accuracy of autonomous navigation of the space robot in the diagnosis of the technical condition of an orbital object

Cited by 2 publications

References 1 publication

Estimation of systematic errors in the results of navigational measurements with the use of spacecraft robot onboard facilities

Estimation of systematic errors in the results of navigational measurements with the use of spacecraft robot onboard facilities

Analytical determination of motion parameters of the center of mass of an uncooperative orbiter on the basis of measurement information provided by on-board systems of a space robot in a coplanar orbit

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