Abstract
For solving the weak observability problem of angle-only relative state estimate, a multi-spacecraft collaborative observation method is proposed. The multi-spacecraft collaboration angle-only relative state estimate model is developed, including state equation and measurement equation. Firstly, based on the second-order relative motion equation, the system state equation is established; secondly, considering the line-of-sight angle measured by different spacecrafts, the system measurement equation is established; then the unscented Kalman filter algorithm is used to estimate the target’s relative state. Finally, the numerical simulation validates that the aforementioned method can effectively improve the weak observability of angle-only relative state estimate, and with the increasing of the number of spacecrafts, the convergence speed and accuracy of the relative position, velocity are also higher. In addition, the performance of the aforementioned method under uncertainty is also validated by two scenarios where the measurement data is sometimes lost and the target is maneuvered.
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© 2023 Bei**g HIWING Sci. and Tech. Info Inst
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Dawei, F., Weiwei, C., Le**, Y., Runde, Z. (2023). Relative State Estimate of Non-cooperative Target by Multiple Spacecraft Collaborative Observation. In: Fu, W., Gu, M., Niu, Y. (eds) Proceedings of 2022 International Conference on Autonomous Unmanned Systems (ICAUS 2022). ICAUS 2022. Lecture Notes in Electrical Engineering, vol 1010. Springer, Singapore. https://doi.org/10.1007/978-981-99-0479-2_197
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DOI: https://doi.org/10.1007/978-981-99-0479-2_197
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Publisher Name: Springer, Singapore
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Online ISBN: 978-981-99-0479-2
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