Development and demonstration of an autonomous collision avoidance algorithm aboard the ISS

Katz, Jacob G.; Saenz-Otero, Alvar; Miller, David W.

doi:10.1109/aero.2011.5747525

Cited by 8 publications

(5 citation statements)

References 7 publications

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“…In their results, the error obtained was only 10 cm after temporal propagation simulations of 5 days, while the SGP4 model [10] (maintained by the US Space Command -NORAD) obtained an error of 30 meters under the same conditions. The OMOP analytical model [11] (with equations that can be applied for short and long propagation times) obtained an error of 300 cm and the Abdel-Aziz propagator in [12] obtained an error of 100 cm under the same conditions. In implementing collision avoidance maneuvers, the propulsion system must modify the vehicle's speed for three simultaneous objectives: 1) to avoid a collision;…”

Section: Introductionmentioning

confidence: 85%

Space evasive maneuvers: what is the viable technological parameters?15 / Manobras evasivas do espaço: quais são os parâmetros tecnológicos viáveis?

Costa¹,

Jesus²

2022

BJDV

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Space Debris (SD) is the by-product of space missions and Earth's gravitational capture in the dynamics of the Solar System. Their accumulation in this environment constitutes a real and permanent risk for these missions. Mathematical and computational analysis for the relative dynamics between SD and a space vehicle, considering the Earth's gravitational and propulsion forces, is performed in this work. Exhaustive numerical simulations of the model were performed for suboptimal technological parameters (power factor, exhaust speed) and physical parameters (start and duration of propulsion) suitable for evasive maneuvers for minimum fuel consumption and relative distance accuracy. The simulation results identify important patterns that help us understand the characteristics of space vehicle propellant control parameters for evasive maneuvers.

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Section: Introductionmentioning

confidence: 85%

Space evasive maneuvers: what is the viable technological parameters?15 / Manobras evasivas do espaço: quais são os parâmetros tecnológicos viáveis?

Costa¹,

Jesus²

2022

BJDV

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“…The following tests evaluated the interaction between a human‐controlled spacecraft and autonomous collision avoidance mechanisms. This section briefly describes the collision avoidance steering law (Katz, Saenz‐Otero, & Miller, 2011). It operates on the closest point of approach (CPA), defined as the point in space and time in a relative trajectory when two objects are closest.…”

Section: Experiments Aboard the International Space Stationmentioning

confidence: 99%

SPHERES interact—Human–machine interaction aboard the International Space Station

Stoll

Jaekel

Katz

et al. 2012

Journal of Field Robotics

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The deployment of space robots for servicing and maintenance operations that are teleoperated from the ground is a valuable addition to existing autonomous systems, because it will provide flexibility and robustness in mission operations. In this connection, not only robotic manipulators are of great use, but also free‐flying inspector satellites supporting the operations through additional feedback to the ground operator. The manual control of such an inspector satellite at a remote location is challenging, because navigation in three‐dimensional space is unfamiliar and large time delays can occur in the communication channel. This paper shows a series of robotic experiments, in which free flyers are controlled by astronauts aboard the International Space Station (ISS). The Synchronized Position Hold Engage Reorient Experimental Satellites (SPHERES) were utilized to study several aspects of a remotely controlled inspector satellite. The focus in this case study is investigating different approaches to human–spacecraft interaction with varying levels of autonomy under zero‐gravity conditions. © 2012 Wiley Periodicals, Inc.

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“…The main benefit of this simplicity is that, if implemented correctly, this algorithm can have very low computational cost. As a result, it can run as a higher-frequency background control process, ensuring safe relative positioning, while more complicated mapping and planning algorithms (e.g., those found in [12][13][14][15][16][17]) are being run ahead of close proximity and docking operations. Alternatively, this relative navigation and control system can be used with a very low power embedded computer (possibly on a very small satellite) to perform an inspection mission at a safe keepout distance.…”

Section: Introductionmentioning

confidence: 99%

Flight Results of Vision-Based Navigation for Autonomous Spacecraft Inspection of Unknown Objects

Fourie

Tweddle

Ulrich

et al. 2014

Journal of Spacecraft and Rockets

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This paper describes a vision-based relative navigation and control strategy for inspecting an unknown, noncooperative, and possibly spinning object in space using a visual-inertial system that is designed to minimize the computational requirements while maintaining a safe relative distance. The proposed spacecraft inspection system relies solely on a calibrated stereo camera and a three-axis gyroscope to maintain a safe inspection distance while following a circular trajectory around the object. The navigation system is based on image processing algorithms, which extract the relative position and velocity between the inspector and the object, and a simple control approach is used to ensure that the desired range and bearing are maintained throughout the inspection maneuver. The hardware implementation details of the system are provided. Computer simulation results and experiments conducted aboard the International Space Station during Expedition 34 are reported to demonstrate the performance and applicability of the proposed hardware, and related navigation and control systems to inspect an unknown spacecraft.

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Development and demonstration of an autonomous collision avoidance algorithm aboard the ISS

Cited by 8 publications

References 7 publications

Space evasive maneuvers: what is the viable technological parameters?15 / Manobras evasivas do espaço: quais são os parâmetros tecnológicos viáveis?

Space evasive maneuvers: what is the viable technological parameters?15 / Manobras evasivas do espaço: quais são os parâmetros tecnológicos viáveis?

SPHERES interact—Human–machine interaction aboard the International Space Station

Flight Results of Vision-Based Navigation for Autonomous Spacecraft Inspection of Unknown Objects

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