Coupled orbit-attitude dynamics and relative state estimation of spacecraft near small Solar System bodies

Gaurav Misra, Maziar Izadi, Amit Sanyal, Daniel Scheeres

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

The effects of dynamical coupling between the rotational (attitude) and translational (orbital) motion of spacecraft near small Solar System bodies is investigated. This coupling arises due to the weak gravity of these bodies, as well as solar radiation pressure. The traditional approach assumes a point-mass spacecraft model to describe the translational motion of the spacecraft, while the attitude motion is considered to be completely decoupled from the translational motion. The model used here to describe the rigid-body spacecraft dynamics includes the non-uniform rotating gravity field of the small body up to second degree and order along with the attitude dependent terms, solar tide, and solar radiation pressure. This model shows that the second degree and order gravity terms due to the small body affect the dynamics of the spacecraft to the same extent as the orbit-attitude coupling due to the primary gravity (zeroth order) term. Variational integrators are used to simulate the dynamics of both the rigid spacecraft and the point mass. The small bodies considered here are modeled after Near-Earth Objects (NEO) 101955 Bennu, and 25143 Itokawa, and are assumed to be triaxial ellipsoids with uniform density. Differences in the numerically obtained trajectories of a rigid spacecraft and a point mass are then compared, to illustrate the impact of the orbit-attitude coupling on spacecraft dynamics in proximity of small bodies. Possible implications on the performance of model-based spacecraft control and on the station-keeping budget, if the orbit-attitude coupling is not accounted for in the model of the dynamics, are also discussed. An almost globally asymptotically stable motion estimation scheme based solely on visual/optical feedback that estimates the relative motion of the asteroid with respect to the spacecraft is also obtained. This estimation scheme does not require a model of the dynamics of the asteroid, which makes it perfectly suited for asteroids whose properties are not well known.

Original languageEnglish (US)
Pages (from-to)1747-1761
Number of pages15
JournalAdvances in Space Research
Volume57
Issue number8
DOIs
StatePublished - Apr 15 2016
Externally publishedYes

Fingerprint

state estimation
Solar system
State estimation
solar system
Spacecraft
spacecraft
Orbits
orbits
asteroids
Asteroids
gravitation
Gravitation
translational motion
asteroid
radiation pressure
solar radiation
gravity
Solar radiation
spacecraft models
spacecraft control

Keywords

  • Orbit-attitude coupling
  • Relative pose estimation
  • Small bodies

ASJC Scopus subject areas

  • Aerospace Engineering
  • Space and Planetary Science

Cite this

Coupled orbit-attitude dynamics and relative state estimation of spacecraft near small Solar System bodies. / Misra, Gaurav; Izadi, Maziar; Sanyal, Amit; Scheeres, Daniel.

In: Advances in Space Research, Vol. 57, No. 8, 15.04.2016, p. 1747-1761.

Research output: Contribution to journalArticle

@article{26f2999da39645b19f1242ad6d986933,
title = "Coupled orbit-attitude dynamics and relative state estimation of spacecraft near small Solar System bodies",
abstract = "The effects of dynamical coupling between the rotational (attitude) and translational (orbital) motion of spacecraft near small Solar System bodies is investigated. This coupling arises due to the weak gravity of these bodies, as well as solar radiation pressure. The traditional approach assumes a point-mass spacecraft model to describe the translational motion of the spacecraft, while the attitude motion is considered to be completely decoupled from the translational motion. The model used here to describe the rigid-body spacecraft dynamics includes the non-uniform rotating gravity field of the small body up to second degree and order along with the attitude dependent terms, solar tide, and solar radiation pressure. This model shows that the second degree and order gravity terms due to the small body affect the dynamics of the spacecraft to the same extent as the orbit-attitude coupling due to the primary gravity (zeroth order) term. Variational integrators are used to simulate the dynamics of both the rigid spacecraft and the point mass. The small bodies considered here are modeled after Near-Earth Objects (NEO) 101955 Bennu, and 25143 Itokawa, and are assumed to be triaxial ellipsoids with uniform density. Differences in the numerically obtained trajectories of a rigid spacecraft and a point mass are then compared, to illustrate the impact of the orbit-attitude coupling on spacecraft dynamics in proximity of small bodies. Possible implications on the performance of model-based spacecraft control and on the station-keeping budget, if the orbit-attitude coupling is not accounted for in the model of the dynamics, are also discussed. An almost globally asymptotically stable motion estimation scheme based solely on visual/optical feedback that estimates the relative motion of the asteroid with respect to the spacecraft is also obtained. This estimation scheme does not require a model of the dynamics of the asteroid, which makes it perfectly suited for asteroids whose properties are not well known.",
keywords = "Orbit-attitude coupling, Relative pose estimation, Small bodies",
author = "Gaurav Misra and Maziar Izadi and Amit Sanyal and Daniel Scheeres",
year = "2016",
month = "4",
day = "15",
doi = "10.1016/j.asr.2015.05.023",
language = "English (US)",
volume = "57",
pages = "1747--1761",
journal = "Advances in Space Research",
issn = "0273-1177",
publisher = "Elsevier",
number = "8",

}

TY - JOUR

T1 - Coupled orbit-attitude dynamics and relative state estimation of spacecraft near small Solar System bodies

AU - Misra, Gaurav

AU - Izadi, Maziar

AU - Sanyal, Amit

AU - Scheeres, Daniel

PY - 2016/4/15

Y1 - 2016/4/15

N2 - The effects of dynamical coupling between the rotational (attitude) and translational (orbital) motion of spacecraft near small Solar System bodies is investigated. This coupling arises due to the weak gravity of these bodies, as well as solar radiation pressure. The traditional approach assumes a point-mass spacecraft model to describe the translational motion of the spacecraft, while the attitude motion is considered to be completely decoupled from the translational motion. The model used here to describe the rigid-body spacecraft dynamics includes the non-uniform rotating gravity field of the small body up to second degree and order along with the attitude dependent terms, solar tide, and solar radiation pressure. This model shows that the second degree and order gravity terms due to the small body affect the dynamics of the spacecraft to the same extent as the orbit-attitude coupling due to the primary gravity (zeroth order) term. Variational integrators are used to simulate the dynamics of both the rigid spacecraft and the point mass. The small bodies considered here are modeled after Near-Earth Objects (NEO) 101955 Bennu, and 25143 Itokawa, and are assumed to be triaxial ellipsoids with uniform density. Differences in the numerically obtained trajectories of a rigid spacecraft and a point mass are then compared, to illustrate the impact of the orbit-attitude coupling on spacecraft dynamics in proximity of small bodies. Possible implications on the performance of model-based spacecraft control and on the station-keeping budget, if the orbit-attitude coupling is not accounted for in the model of the dynamics, are also discussed. An almost globally asymptotically stable motion estimation scheme based solely on visual/optical feedback that estimates the relative motion of the asteroid with respect to the spacecraft is also obtained. This estimation scheme does not require a model of the dynamics of the asteroid, which makes it perfectly suited for asteroids whose properties are not well known.

AB - The effects of dynamical coupling between the rotational (attitude) and translational (orbital) motion of spacecraft near small Solar System bodies is investigated. This coupling arises due to the weak gravity of these bodies, as well as solar radiation pressure. The traditional approach assumes a point-mass spacecraft model to describe the translational motion of the spacecraft, while the attitude motion is considered to be completely decoupled from the translational motion. The model used here to describe the rigid-body spacecraft dynamics includes the non-uniform rotating gravity field of the small body up to second degree and order along with the attitude dependent terms, solar tide, and solar radiation pressure. This model shows that the second degree and order gravity terms due to the small body affect the dynamics of the spacecraft to the same extent as the orbit-attitude coupling due to the primary gravity (zeroth order) term. Variational integrators are used to simulate the dynamics of both the rigid spacecraft and the point mass. The small bodies considered here are modeled after Near-Earth Objects (NEO) 101955 Bennu, and 25143 Itokawa, and are assumed to be triaxial ellipsoids with uniform density. Differences in the numerically obtained trajectories of a rigid spacecraft and a point mass are then compared, to illustrate the impact of the orbit-attitude coupling on spacecraft dynamics in proximity of small bodies. Possible implications on the performance of model-based spacecraft control and on the station-keeping budget, if the orbit-attitude coupling is not accounted for in the model of the dynamics, are also discussed. An almost globally asymptotically stable motion estimation scheme based solely on visual/optical feedback that estimates the relative motion of the asteroid with respect to the spacecraft is also obtained. This estimation scheme does not require a model of the dynamics of the asteroid, which makes it perfectly suited for asteroids whose properties are not well known.

KW - Orbit-attitude coupling

KW - Relative pose estimation

KW - Small bodies

UR - http://www.scopus.com/inward/record.url?scp=84930695366&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84930695366&partnerID=8YFLogxK

U2 - 10.1016/j.asr.2015.05.023

DO - 10.1016/j.asr.2015.05.023

M3 - Article

AN - SCOPUS:84930695366

VL - 57

SP - 1747

EP - 1761

JO - Advances in Space Research

JF - Advances in Space Research

SN - 0273-1177

IS - 8

ER -