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Gaze tracking control method and system for moving target by video satellite

A moving target, tracking control technology, applied in the direction of aerospace vehicle guidance devices, etc.

Pending Publication Date: 2021-04-16
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method and system for gaze tracking control of moving targets by video satellites, aiming to solve the problem of gaze tracking control of a type of ground moving targets by video satellites

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  • Gaze tracking control method and system for moving target by video satellite
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  • Gaze tracking control method and system for moving target by video satellite

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Embodiment Construction

[0081] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0082] For the sake of clarity of description, the meanings of the relevant variable symbols used in the present invention are shown in Table 1 below.

[0083] Table 1 The meaning of each variable or symbol

[0084]

[0085]

[0086] One, general train of thought of the present invention

[0087] Video satellite staring imaging means that during the process of earth observation, the satellite adjusts the attitude of the satellite in real time t...

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Abstract

The invention discloses a gaze tracking control method and system for a moving target by a video satellite, and aims to solve the problem of gaze tracking control of the video satellite on a target moving on the ground. Firstly, calculating four expected attitude elements of a satellite relative to an earth inertial coordinate system based on a double-vector method; secondly, further calculating an expected attitude angular velocity and an expected attitude angular acceleration of the satellite; then establishing an attitude kinematics and dynamics equation of the satellite; based on the error quaternion and the error attitude angular velocity, establishing a staring attitude tracking model of the video satellite for the moving target; and finally, designing a PD controller to control the attitude of the satellite. According to the method, good control convergence can be guaranteed when a static target, a low-speed moving target, a medium-speed moving target and a high-speed moving target are tracked, the response speed is high, the robustness is good, and technical reference and support can be provided for the design of a moving target staring tracking attitude controller by a video satellite.

Description

technical field [0001] The invention belongs to the field of video satellite design, and in particular relates to a method and system for controlling the gaze tracking of a moving target by a video satellite. Background technique [0002] Video satellite is a new type of earth observation satellite developed in recent years. It is a small satellite that adopts video imaging, real-time transmission of video data, and operates interactively in the loop. Compared with traditional earth observation satellites , its biggest feature is that it can "stare" at a certain target area to obtain continuous video information of the area. At present, there are already a certain number of video satellites in orbit, including foreign ones: Indonesia's LAPAN-TUBSAT satellite, the United States' Skysat series satellites, etc.; domestic ones: "Tiantuo-2" satellite, "Jilin-1" satellite Wait. Video satellites play a vital role in emergency rescue and disaster relief, battlefield monitoring, tr...

Claims

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Application Information

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IPC IPC(8): B64G1/24
CPCY02T10/40
Inventor 范才智虞绍听张斌斌
Owner NAT UNIV OF DEFENSE TECH
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