Adaptive kriging-assisted optimization of low-thrust many-revolution transfers to geostationary Earth orbit

With radar and surface-to-air missiles posing an increasing threat to on-orbit spacecraft, low-observable satellites play an important role in low-thrust transfers. This paper presents the design for a low-thrust geostationary earth orbit (GEO) transfer control strategy which takes into consideration the low-observable constraint and discusses Earth shadow and perturbation. A control parameter optimization addresses the orbit transfer problem, and five thrust modes are used. Simulation results show that the method outlined in this paper is simple and feasible and results in reduced transfer time with a small amount of calculation. The method therefore offers a useful reference for low-thrust GEO transfer design.

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Low-Earth-Orbit Constellation Phasing Using Miniaturized Low-Thrust Propulsion Systems

Journal of Spacecraft and Rockets ◽

10.2514/1.a34905 ◽

2021 ◽

pp. 1-15

Author(s):

Trevor Lafleur ◽

Nils Apffel

Keyword(s):

Low Earth Orbit ◽

Earth Orbit ◽

Low Thrust ◽

Propulsion Systems

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Data association and uncertainty pruning for tracks determined on short arcs

Celestial Mechanics and Dynamical Astronomy ◽

10.1007/s10569-019-9947-8 ◽

2020 ◽

Vol 132 (1) ◽

Cited By ~ 1

Author(s):

Laura Pirovano ◽

Gennaro Principe ◽

Roberto Armellin

Keyword(s):

Optimization Problems ◽

Data Association ◽

Earth Orbit ◽

Orbital State ◽

Geostationary Earth Orbit ◽

Multiple Observations ◽

Observation Strategies

AbstractWhen building a space catalogue, it is necessary to acquire multiple observations of the same object for the estimated state to be considered meaningful. A first concern is then to establish whether different sets of observations belong to the same object, which is the association problem. Due to illumination constraints and adopted observation strategies, small objects may be detected on short arcs, which contain little information about the curvature of the orbit. Thus, a single detection is usually of little value in determining the orbital state due to the very large associated uncertainty. In this work, we propose a method that both recognizes associated observations and sequentially reduces the solution uncertainty when two or more sets of observations are associated. The six-dimensional (6D) association problem is addressed as a cascade of 2D and 4D optimization problems. The performance of the algorithm is assessed using objects in geostationary Earth orbit, with observations spread over short arcs.

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Performance evaluation of multi-GNSSs navigation in super synchronous transfer orbit and geostationary earth orbit

Satellite Navigation ◽

10.1186/s43020-021-00036-0 ◽

2021 ◽

Vol 2 (1) ◽

Author(s):

Tao Shi ◽

Xuebin Zhuang ◽

Liwei Xie

Keyword(s):

Global Navigation Satellite System ◽

Autonomous Navigation ◽

Satellite System ◽

Earth Orbit ◽

Navigation Satellite ◽

Geostationary Earth Orbit ◽

Beidou Navigation Satellite System ◽

Transfer Orbit ◽

High Orbit ◽

Global Navigation Satellite

AbstractThe autonomous navigation of the spacecrafts in High Elliptic Orbit (HEO), Geostationary Earth Orbit (GEO) and Geostationary Transfer Orbit (GTO) based on Global Navigation Satellite System (GNSS) are considered feasible in many studies. With the completion of BeiDou Navigation Satellite System with Global Coverage (BDS-3) in 2020, there are at least 130 satellites providing Position, Navigation, and Timing (PNT) services. In this paper, considering the latest CZ-5(Y3) launch scenario of Shijian-20 GEO spacecraft via Super-Synchronous Transfer Orbit (SSTO) in December 2019, the navigation performance based on the latest BeiDou Navigation Satellite System (BDS), Global Positioning System (GPS), Galileo Navigation Satellite System (Galileo) and GLObal NAvigation Satellite System (GLONASS) satellites in 2020 is evaluated, including the number of visible satellites, carrier to noise ratio, Doppler, and Position Dilution of Precision (PDOP). The simulation results show that the GEO/Inclined Geo-Synchronous Orbit (IGSO) navigation satellites of BDS-3 can effectively increase the number of visible satellites and improve the PDOP in the whole launch process of a typical GEO spacecraft, including SSTO and GEO, especially for the GEO spacecraft on the opposite side of Asia-Pacific region. The navigation performance of high orbit spacecrafts based on multi-GNSSs can be significantly improved by the employment of BDS-3. This provides a feasible solution for autonomous navigation of various high orbit spacecrafts, such as SSTO, MEO, GEO, and even Lunar Transfer Orbit (LTO) for the lunar exploration mission.

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