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End-to-End Vision-Based Cooperative Target Geo-Localization for Multiple Micro UAVs

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Abstract

Compared to monocular target localization, cooperative target geo-localization can obtain the target’s three-dimensional geographic position in real-time without forwarding requirements. But precision-restricted sensors carried by micro Unmanned Aerial Vehicles (UAVs) lead to measurement error and sensor noise, the localization accuracy under this condition needs to be further improved. The random movement of the non-cooperative target further increases the difficulty of accurate localization. In this paper, considering observation noise and error, a multi-view vision-based cooperative target geo-localization method is proposed. This method estimates the target’s position end-to-end using Interactive Multi-Model Unscented Kalman Filter (IMM-UKF) through the multi-view observation of the target from UAVs. The initial state of the filter is calculated by intersection localization algorithm. Compared with other state-of-the-art cooperative localization methods, simulation and flight experiments show that the proposed cooperative localization method can effectively improve the accuracy of vision-based target geo-localization.

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Acknowledgements

The authors would like to thank Zhaowei Ma, Helu Zhou from National University of Defense Technology for their assistance and efforts on onboard target detection. Thanks are also expressed to Shengde Jia, Tianqing Liu, Tengxiang Li and Huan Wang for their assistance in the flight experiments.

Funding

This work was supported by National Natural Science Foundation of China (grant numbers 61876187).

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Bosen Lin, Lizhen Wu and Yifeng Niu conceived and designed the research; Bosen Lin and Lizhen Wu performed the experiments. Bosen Lin performed the programming and data analyses. Bosen Lin and Lizhen Wu edited and reviewed the manuscript. All authors read and approved the final manuscript.

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Correspondence to Lizhen Wu.

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Lin, B., Wu, L. & Niu, Y. End-to-End Vision-Based Cooperative Target Geo-Localization for Multiple Micro UAVs. J Intell Robot Syst 106, 13 (2022). https://doi.org/10.1007/s10846-022-01639-8

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