GNC schemes design for future China asteroid exploration

Jiang, Xiuqiang; Tao, Ting; Yang, Wei; Li, Shuang

doi:10.1109/chicc.2015.7260458

Cited by 3 publications

(2 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This alone would produce a position error of 9.7 m. This would also decrease if the spacecraft gets closer to the asteroids and would increase if it gets further away. Given the absence of measurements for long periods of time due to eclipses, causing the spacecraft to drift away from L4, the low accuracy of the centroiding process at the beginning and end of eclipses, a value of 20 m has been chosen as the average maximum expected error on the position components coming from Equation (13). This leads to the choice of the weight matrix R, associated to the measurements (Eq.…”

Section: Navigation Analysismentioning

confidence: 99%

“…The interest in the exploration of asteroids and comets has led many authors to study and develop navigation systems for close proximity operations around minor bodies with different levels of autonomy. From the navigation of the Rosetta mission [4,5], to Hayabusa [6] to NEAR [7], authors have explored techniques based on optical systems or simple altimeter measurements for hovering, hopping, landing and station keeping [8][9][10][11][12][13]. Most of the work has been dedicated…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Angles-Only Navigation in the Proximity of a Binary Asteroid System

Torre

Grey

Vasile

2021

Journal of Guidance, Control, and Dynamics

View full text Add to dashboard Cite

This paper investigates the possibility to navigate one or more spacecraft in the proximity of an asteroid binary system using only optical measurements. The approach proposed in this paper assumes only limited prior knowledge of the shape and orbital parameters of the two asteroids. In particular it is shown that the knowledge of the semi-major axis of the orbit of the secondary with respect to the primary is critical to guarantee a sufficient level of navigation accuracy. A method is proposed to allow for the inclusion of the orbital parameters of the secondary asteroid in the estimation process. It is shown that the inclusion of the estimation of the orbital parameters of the secondary provides the required information to allow navigating in the proximity of the binary system at the Lagrange point L4. The paper then demonstrates that the same method can be used to navigate a small formation of two spacecraft at L4 provided that intersatellite position and velocity vectors can be measured with sufficient accuracy. In this case the formation can be controlled even if the optical sensor on board one of the spacecraft partially fails.

show abstract

Section: Navigation Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Angles-Only Navigation in the Proximity of a Binary Asteroid System

Torre

Grey

Vasile

2021

Journal of Guidance, Control, and Dynamics

View full text Add to dashboard Cite

show abstract

Visual Navigation Based on Nonlinear Optimization Method for Asteroid Landing

Huang

2021

Lecture Notes in Electrical Engineering

View full text Add to dashboard Cite

A simulated global GM estimate of the asteroid 469219 Kamo‘oalewa for China’s future asteroid mission

Jin

Yan

et al. 2020

Monthly Notices of the Royal Astronomical Society

View full text Add to dashboard Cite

China will launch in the forthcoming years a sample return mission called ZhengHe, to asteroid 469219 Kamo‘oalewa (provisional designation 2016HO3) and comet 133P/Elst-Pizarro. The mission will consist of an orbiter and a nano-lander. One of ZhengHe’s investigations is the radio science experiment, whose main objective is the asteroid GM estimate. In this paper, we conduct full numerical simulations of the radio science experiment using the wudogs software package, developed by Wuhan University. In addition to two-way Doppler measurements, we also include one-way on-board distance measurements. A list of parameters including the spacecraft initial conditions and the global asteroid GM are solved using a weighted least-squares fit. The simulation results indicate that the GM solution is very sensitive to the ephemeris error. We need an accuracy within 2 km on the ephemeris of the asteroid to achieve a reliable estimate of GM.

show abstract

GNC schemes design for future China asteroid exploration

Cited by 3 publications

References 17 publications

Angles-Only Navigation in the Proximity of a Binary Asteroid System

Angles-Only Navigation in the Proximity of a Binary Asteroid System

Visual Navigation Based on Nonlinear Optimization Method for Asteroid Landing

A simulated global GM estimate of the asteroid 469219 Kamo‘oalewa for China’s future asteroid mission

Contact Info

Product

Resources

About