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Satellite cluster configuration adjustment planning method for space target collaborative observation

A technology of space targets and satellite clusters, applied in prediction, instrumentation, data processing applications, etc., can solve problems such as sudden increase in calculation amount, difficulty in realization, and dimension explosion

Active Publication Date: 2019-07-23
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, with the increase of the number of satellites participating in the coordination, the number of iterative optimization in the existing methods will increase, and the calculation amount will increase sharply; and the specific configuration adjustment tasks are mostly carried out based on the ground measurement and control system, and the satellites are not fully utilized. In addition, with the increase of the scale of Agent in MAS, the dimensions of combined state S and combined action space A increase exponentially, and the problem of "dimension explosion" appears, which makes the traditional The MDP framework solves the combination optimal adjustment action, which is not easy to realize in most cases

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  • Satellite cluster configuration adjustment planning method for space target collaborative observation
  • Satellite cluster configuration adjustment planning method for space target collaborative observation
  • Satellite cluster configuration adjustment planning method for space target collaborative observation

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Embodiment 1

[0078] A satellite cluster configuration adjustment planning method for coordinated observation of space targets described in the present invention uses cluster system status information and observation task constraint information as decision-making factors, establishes a coordination graph based on the communication relationship of the cluster, and introduces it under the framework of the coordination graph The MAS reinforcement learning mechanism determines the optimal configuration adjustment strategy of the cluster through the global coordination of the cluster and the local optimization of a single star.

[0079]In the method: the state information of the cluster system includes the relative motion state information of each satellite, the current configuration state of the cluster, the current planning time (decision period) and the orbit control thruster configuration of each satellite in the cluster.

[0080] Observation task constraint information includes configuration...

Embodiment 2

[0114] Satellite Agent autonomous planning structure of the present invention such as figure 1 As shown, the satellites in the cluster are regarded as intelligent agents with autonomous planning capabilities, and the information interaction module, communication module and hardware driver module are responsible for interacting with the system environment and other Agents. The information interaction module is the basis of the agent's autonomous planning and control. It is used to perceive the environment state information and process the agent's own state information and the information of other agents coordinated with it, and then generate coordination information and input it to the planning and decision-making module; the planning and decision-making module is The core of Agent autonomous planning, its function is to make local optimization decisions based on planning algorithms and coordination information, generate planning solutions, and provide local planning informatio...

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Abstract

The invention discloses a satellite cluster configuration adjustment planning method for space target collaborative observation. According to the method, each satellite is regarded as an intelligent Agent with autonomous planning and decision-making capability, a coordination graph based on a cluster communication structure is established, and tasks optimized by a global optimal configuration adjustment strategy are decomposed to local learning of each satellite based on the communication coordination graph. According to the method, the top-layer planning of configuration adjustment and bottom-layer control are comprehensively considered; solving is carried out from the perspective of cluster cooperation planning; the global planning learning task is divided into the paired Agents according to the communication relationship, so that the autonomy and intelligence of the satellite cluster are enhanced, the on-orbit viability and the task execution level of the satellite cluster are improved, and a new idea and method are provided for on-orbit autonomous operation and management of the satellite cluster.

Description

technical field [0001] The invention belongs to the collaborative planning technology of distributed satellite systems, and in particular relates to a satellite cluster configuration adjustment planning method for coordinated observation of space targets. Background technique [0002] With the increase of space debris and the development of space countermeasure technology, the degree of space threats to important spacecraft in orbit has increased significantly. In this regard, observation systems can be deployed nearby to monitor the surrounding environment and monitor external threats or platform failures. early warning. As far as space target observation tasks are concerned, the observation system composed of dozens or even hundreds of micro-satellite clusters has the advantages of good flexibility and wide observation range, and can make full use of the advantages of the cluster to complete all-round high-precision observation of space targets , monitoring and identifica...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q10/04
CPCG06Q10/04G06Q10/06315
Inventor 程月华李欢姜斌汪志军陈严波
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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