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- W4309308383 abstract "The rolling shutter effect decreases the accuracy of the attitude measurement of star trackers when they work in rolling shutter exposure mode, especially under dynamic conditions. To solve this problem, a rolling shutter effect correction method based on particle swarm optimization is proposed. Firstly, a collinear reverse installation method between the star tracker and the satellite is proposed, which simplifies the relationship between the velocity of the star centroid and the star tracker angular velocity. Next, the centroid error model is obtained by the star centroid velocity. Based on the centroid error model and angular distance invariance, the loss function of the centroid error is proposed. Then, the particle swarm optimization algorithm is used to determine the star tracker angular velocity by minimizing the loss function. Finally, the simulation and experiments are carried out to verify the proposed method. The experimental results show that the convergence times of the algorithm are less than 50 and the root mean square error (RMSE) of the angular velocity is better than 0.02°/s when the angular velocity of the star tracker is no more than 5°/s." @default.
- W4309308383 created "2022-11-26" @default.
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- W4309308383 date "2022-11-15" @default.
- W4309308383 modified "2023-10-01" @default.
- W4309308383 title "Analysis and Correction of the Rolling Shutter Effect for a Star Tracker Based on Particle Swarm Optimization" @default.
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- W4309308383 doi "https://doi.org/10.3390/rs14225772" @default.
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