Imaging quality priority task scheduling method

Abstract

The invention discloses an imaging quality priority task scheduling method. The method comprises the following steps of: first, calculating a visible time window, meeting an imaging quality requirement, of a task according to satellite orbital data, posture maneuvering capability, ground target position information and the imaging quality requirement, and sequencing all tasks according to the start time of the visible time window; then, calculating the best observation time point of the task, and scheduling the task; when the task is scheduled, firstly judging whether a current task is conflict with the last scheduled task; if the current task is conflict with the last scheduled task, determining that the current task does not need to be predicted and cannot be scheduled; if the current task is not conflict with the last scheduled task, acquiring a predicting task group of the current task; judging whether the current task is conflict with the tasks in the predicting task group; if the current task is conflict with the tasks in the predicting task group, accepting or rejecting the current task according to a rule; if the current task is not conflict with the tasks in the predicting task group, determining that the current task can be scheduled; for the current task which can be scheduled, writing a posture maneuvering action and an observation action of a satellite in a satellite action sequence; and finally, outputting the satellite action sequence as a task scheduling result.

Description

Technical field [0001] The invention belongs to the field of satellite task planning and scheduling, and relates to a satellite task scheduling method. Background technique [0002] Fast attitude maneuvering imaging satellites can realize a variety of complex imaging modes with the help of fast attitude maneuvering capabilities. Compared with traditional earth observation satellites that use sub-satellite point imaging, the fast attitude maneuverability greatly increases the satellite's opportunity to observe the target, so it has stronger observation capabilities. Each imaging mode of the fast attitude maneuvering imaging satellite is accompanied by multiple attitude maneuvers, camera switching operations, etc., which form a continuous control command sequence. Due to the large number of instructions, it is impossible to guarantee the reliability of instruction scheduling and uploading and the real-time issue of instruction execution. Therefore, a set of task planning and sched...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that due to the complexity of the constraints, the problem scale is large, the solution is difficult and time-consuming

For example, in the ASPEN system, due to the troublesome conflict identification and resolution rules adopted, the solution efficiency is low. In the application of EO-1, only four tasks can be scheduled every day, which is difficult to meet the requirements of multi-task scheduling;

[0009] Third, most of the existing methods are related to specific application satellites, and the design of the model is closely related to the specific spaceborne equipment, which is not general and universal

Traditional task scheduling methods have been unable to meet the needs of fast attitude maneuver imaging satellite task scheduling and planning

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