视频小卫星目标跟踪视野分区防脱靶控制
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1.国防科技大学;2.西昌卫星发射中心

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V19

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湖南省重点领域研发计划(2023NK2008)


Anti-off-target control of target tracking for small video satellite based on field of view zoning
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    摘要:

    针对视频小卫星与观测目标存在较大初始相对角速度,容易偏离相机视场造成脱靶的问题,设计了一种视频小卫星目标跟踪视野分区防脱靶控制方法,该方法将星载相机矩形成像视野按照内切圆划分为内外两部分,内切圆内部和外部分别基于势函数和拟欧拉旋转法设计跟踪控制器,并利用Barbalat引理证明两个区域控制律的渐近稳定性,同时证明了目标进入视野内切圆区域后基于势函数的控制器可以确保不脱靶。通过控制器对比仿真,结果表明拟欧拉旋转法相比于PD控制具有更强的抑制目标偏离视场能力,结合拟欧拉旋转法和势函数法的视野分区控制相比全视场的拟欧拉旋转法,能够有效实现对较快速机动目标的防脱靶控制,从而实现连续跟踪观测。

    Abstract:

    An anti-off-target control method for small video satellite target tracking based on visual field zoning was proposed to address the problem of high initial relative angular velocity between small video satellite and observation targets, which can easily deviate from the camera field of view and cause off target. This method divided the rectangular imaging field of the satellite camera into inner and outer parts according to the inscribed circle. The inner and outer parts of the inscribed circle were designed with tracking controllers based on potential function and Euler rotation method respectively. By using the Barbarat‘s lemma, the asymptotic stability of control laws in two parts was proved, and it was also proved that the potential function controller can ensure that target would not leave the inscribed circle of visual field after entering it. Through controller comparison and simulation, the results show that the Euler rotation method has a stronger ability to suppress target deviation from the field of view compared with PD control. Compared with the full Euler rotation method, the field of view partition control combining the Euler rotation method and potential function method can effectively achieve anti-off-target control for faster maneuvering targets, thereby achieving continuous tracking and observation.

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  • 收稿日期:2023-10-12
  • 最后修改日期:2024-07-02
  • 录用日期:2023-12-25
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